<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">J.S. Raminhos, A. Velhinho, J.P. Borges</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Development of Polymeric Anepectic Meshes: Auxetic Metamaterials with Negative Thermal Expansion</style></title><secondary-title><style face="normal" font="default" size="100%">Smart Materials &amp; Structures</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2019</style></year></dates><volume><style face="normal" font="default" size="100%">28</style></volume><pages><style face="normal" font="default" size="100%">045010</style></pages><abstract><style face="normal" font="default" size="100%">&lt;p&gt;This paper reports the application of additive manufacturing technology to fabricate bidimensional&lt;br /&gt;
lightweight composite meshes capable of demonstrating auxetic properties&lt;br /&gt;
(negative Poisson’s ratio (NPR)) in combination with negative thermal expansion (NTE)&lt;br /&gt;
behaviour, using as constituent materials polymers that do not exhibit NTE behaviour. To&lt;br /&gt;
describe the combination of NPR and NTE characteristics, the designation of ‘anepectic’ is being&lt;br /&gt;
proposed. Each mesh, obtained from varying either the material combination or the design&lt;br /&gt;
parameters, was tested on a heated silicone bath to study the effects of the different combinations&lt;br /&gt;
on the coefficient of thermal expansion (CTE). It was found that all meshes studied demonstrated&lt;br /&gt;
a successful combination of NPR and NTE behaviours, and it was revealed that there is a&lt;br /&gt;
possibility to tailor the meshes to activate the NTE behaviour within a chosen range of&lt;br /&gt;
temperatures. For an extreme case, a Poisson’s ratio of −0.056, along with a CTE of&lt;br /&gt;
−1568×10^−6 K−1 has been achieved.&lt;/p&gt;
</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">F. Ferreira, I. Ferreira, E. Camacho, F. Lopes, A. Marques, A. Velhinho</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Graphene Oxide-Reinforced Aluminium-Matrix Nanostructured Composites Fabricated by Accumulative Roll Bonding</style></title><secondary-title><style face="normal" font="default" size="100%">Composites Part B</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2019</style></year></dates><volume><style face="normal" font="default" size="100%">164</style></volume><pages><style face="normal" font="default" size="100%">265-271 </style></pages><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Accumulative Roll Bonding (ARB) was used to fabricate Graphene Oxide-reinforced Al-matrix composites.&lt;br /&gt;
Graphene Oxide reinforcement was suspended in a stabilized aqueous solution and applied, prior to each ARB&lt;br /&gt;
cycle, through airgun spraying. Different concentrations (graphene oxide/milipore water) were used and for&lt;br /&gt;
each concentration, samples produced have undergone up to 5 rolling cycles.&lt;br /&gt;
Optical and electron scanning microscopies were used for microstructural characterization which revealed a&lt;br /&gt;
non-homogenous deformation of the layers across the composite's thickness.&lt;br /&gt;
Although the presence of graphene-oxide promoted an increase in the microhardness, higher values were&lt;br /&gt;
obtained with its lowest concentration for similar samples. The number of ARB cycles and the direction of the&lt;br /&gt;
tested sections also influenced the microhardness results since the 5-cycle samples and the rolling direction&lt;br /&gt;
sections for all the samples achieved higher hardness results. Graphene Oxide revealed to be a major contributor&lt;br /&gt;
to the increase of stiffness during bending of the tested samples.&lt;/p&gt;
</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Carlos F. C. João, Coro Echeverria, Alexandre Velhinho, Jorge Carvalho Silva, Maria H. Godinho,  João Paulo Borges</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Bio-inspired production of chitosan/chitin films from liquid crystalline suspensions</style></title><secondary-title><style face="normal" font="default" size="100%">Carbohydrate Polymers</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2017</style></year></dates><volume><style face="normal" font="default" size="100%">155</style></volume><pages><style face="normal" font="default" size="100%">372-381</style></pages><abstract><style face="normal" font="default" size="100%">&lt;p&gt;tInspired by chitin based hierarchical structures observed in arthropods exoskeleton, this work reportsthe capturing of chitin nanowhiskers’ chiral nematic order into a chitosan matrix. For this purpose, highlycrystalline chitin nanowhiskers (CTNW) with spindle-like morphology and average aspect ratio of 24.9were produced by acid hydrolysis of chitin. CTNW were uniformly dispersed at different concentrationsin aqueous suspensions. The suspensions liquid crystalline phase domain was determined by rheologicalmeasurements and polarized optical microscopy (POM). Chitosan (CS) was added to the CTNW isotropic,biphasic and anisotropic suspensions and the solvent was evaporated to allow films formation. The Films’morphologies as well as the mechanical properties were explored. A correlation between experimentalresults and a theoretical model, for layered matrix’ structures with fibers acting as a reinforcement agent,was established. The results evidence the existence of two different layered structures, one formed bychitosan layers induced by the presence of chitin and another formed by chitin nanowhiskers layers.By playing on the ratio chitin/chitosan one layered structure or the other can be obtained allowing thetunning of materials’ mechanical properties.&lt;/p&gt;
</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Sofia Sá</style></author><author><style face="normal" font="default" size="100%">Gawande, Manoj B.</style></author><author><style face="normal" font="default" size="100%">Velhinho, Alexandre</style></author><author><style face="normal" font="default" size="100%">Veiga, João Pedro</style></author><author><style face="normal" font="default" size="100%">Bundaleski, Nenad</style></author><author><style face="normal" font="default" size="100%">João Trigueiro</style></author><author><style face="normal" font="default" size="100%">Tolstogouzov, Alexander</style></author><author><style face="normal" font="default" size="100%">Teodoro, Orlando M. N. D.</style></author><author><style face="normal" font="default" size="100%">Zboril, Radek</style></author><author><style face="normal" font="default" size="100%">Varma, Rajender S.</style></author><author><style face="normal" font="default" size="100%">Paula S. Branco</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Magnetically recyclable magnetite-palladium (Nanocat-Fe-Pd) nanocatalyst for the Buchwald-Hartwig reaction</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2014</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">16</style></volume><pages><style face="normal" font="default" size="100%">3494-3500</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;n/a&lt;/p&gt;
</style></abstract><work-type><style face="normal" font="default" size="100%">Peer reviewed</style></work-type><notes><style face="normal" font="default" size="100%">&lt;p&gt;n/a&lt;/p&gt;
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Ferreira, A. Conde, M. Ángeles Arenas, L.A. Rocha, A. Velhinho</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Anodization mechanism on SiC nanoparticle reinforced Al matrix composites</style></title><secondary-title><style face="normal" font="default" size="100%">Materials</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2014</style></year></dates><volume><style face="normal" font="default" size="100%">7</style></volume><pages><style face="normal" font="default" size="100%">8151-8167</style></pages></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Gawande MB</style></author><author><style face="normal" font="default" size="100%">Rathi AK</style></author><author><style face="normal" font="default" size="100%">Branco PS</style></author><author><style face="normal" font="default" size="100%">Potewar TM</style></author><author><style face="normal" font="default" size="100%">Velhinho A</style></author><author><style face="normal" font="default" size="100%">Nogueira ID</style></author><author><style face="normal" font="default" size="100%">Tolstogouzov A</style></author><author><style face="normal" font="default" size="100%">Ghumman CAA</style></author><author><style face="normal" font="default" size="100%">Teodoro OMND</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Nano-MgO-ZrO2 Mixed Metal oxides: Extensive characterization by SIMS and application in the reduction of carbonyl compounds and in multicomponent reactions</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2013</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">3</style></volume><pages><style face="normal" font="default" size="100%">3611-3617</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">n/a</style></abstract><work-type><style face="normal" font="default" size="100%">Peer reviewed</style></work-type><notes><style face="normal" font="default" size="100%">n/a</style></notes></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Gandra João</style></author><author><style face="normal" font="default" size="100%">Vigarinho Pablo</style></author><author><style face="normal" font="default" size="100%">Pereira Diogo</style></author><author><style face="normal" font="default" size="100%">Miranda Rosa</style></author><author><style face="normal" font="default" size="100%">Vilaça Pedro</style></author><author><style face="normal" font="default" size="100%">Velhinho Alexandre</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Wear characterization of Functionally Graded Surface composites produced by Friction Surfacing</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2013</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">52</style></volume><pages><style face="normal" font="default" size="100%">373-383</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">n/a</style></abstract><work-type><style face="normal" font="default" size="100%">Peer reviewed</style></work-type><notes><style face="normal" font="default" size="100%">n/a</style></notes></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Gawande MB</style></author><author><style face="normal" font="default" size="100%">Velhinho A</style></author><author><style face="normal" font="default" size="100%">Nogueira ID</style></author><author><style face="normal" font="default" size="100%">Ghumman CAA</style></author><author><style face="normal" font="default" size="100%">Teodoro OMND</style></author><author><style face="normal" font="default" size="100%">Branco PS</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">A facile synthesis of cysteine-ferrite magnetic nanoparticles for application in multicomponent reactions-a sustainable protocol</style></title><secondary-title><style face="normal" font="default" size="100%">RSC ADVANCES</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2012</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">2</style></volume><pages><style face="normal" font="default" size="100%">6144-6149</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">n/a</style></abstract><work-type><style face="normal" font="default" size="100%">Peer reviewed</style></work-type><notes><style face="normal" font="default" size="100%">n/a</style></notes></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Gandra João</style></author><author><style face="normal" font="default" size="100%">Miranda Rosa M.</style></author><author><style face="normal" font="default" size="100%">Vilaça Pedro</style></author><author><style face="normal" font="default" size="100%">Velhinho Alexandre</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Production of functionally graded surface composites by friction surfacing</style></title><tertiary-title><style face="normal" font="default" size="100%">Mechanics of Nano, Micro and Macro Composite Structures</style></tertiary-title></titles><dates><year><style  face="normal" font="default" size="100%">2012</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan</style></date></pub-dates></dates><pages><style face="normal" font="default" size="100%">1-2</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">n/a</style></abstract><work-type><style face="normal" font="default" size="100%">Peer reviewed</style></work-type><notes><style face="normal" font="default" size="100%">n/a</style></notes></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Gawande MB</style></author><author><style face="normal" font="default" size="100%">Rathi AK</style></author><author><style face="normal" font="default" size="100%">Branco PS</style></author><author><style face="normal" font="default" size="100%">Nogueira ID</style></author><author><style face="normal" font="default" size="100%">Velhinho A</style></author><author><style face="normal" font="default" size="100%">Shrikhande JJ</style></author><author><style face="normal" font="default" size="100%">Indulkar UU</style></author><author><style face="normal" font="default" size="100%">Jayaram RV</style></author><author><style face="normal" font="default" size="100%">Ghumman CAA</style></author><author><style face="normal" font="default" size="100%">Bundaleski N</style></author><author><style face="normal" font="default" size="100%">Teodoro OMND</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Regio- and Chemoselective Reduction of Nitroarenes and Carbonyl Compounds over Recyclable Magnetic Ferrite-Nickel Nanoparticles (Fe3O4-Ni) by Using Glycerol as a Hydrogen Source</style></title><secondary-title><style face="normal" font="default" size="100%">CHEMISTRY-A EUROPEAN JOURNAL</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2012</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">18</style></volume><pages><style face="normal" font="default" size="100%">12628-12632</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">n/a</style></abstract><work-type><style face="normal" font="default" size="100%">Peer reviewed</style></work-type><notes><style face="normal" font="default" size="100%">&lt;p&gt;Sem PDF&lt;/p&gt;
</style></notes></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Gandra J</style></author><author><style face="normal" font="default" size="100%">Miranda R</style></author><author><style face="normal" font="default" size="100%">Vilaca P</style></author><author><style face="normal" font="default" size="100%">Velhinho A</style></author><author><style face="normal" font="default" size="100%">Teixeira JP</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Functionally graded materials produced by friction stir processing</style></title><secondary-title><style face="normal" font="default" size="100%">JOURNAL OF MATERIALS PROCESSING TECHNOLOGY</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2011</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan</style></date></pub-dates></dates><publisher><style face="normal" font="default" size="100%">TULISBON, Univ Nova Lisboa, IST UTL Inst Super Tecn, Univ Nova Lisboa</style></publisher><volume><style face="normal" font="default" size="100%">211</style></volume><pages><style face="normal" font="default" size="100%">1659-1668</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">n/a</style></abstract><notes><style face="normal" font="default" size="100%">n/a</style></notes></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Velhinho A</style></author><author><style face="normal" font="default" size="100%">Rocha LA</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Longitudinal centrifugal casting of metal-matrix functionally graded composites: an assessment of modelling issues</style></title><secondary-title><style face="normal" font="default" size="100%">JOURNAL OF MATERIALS SCIENCE</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2011</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan</style></date></pub-dates></dates><publisher><style face="normal" font="default" size="100%">Univ Minho, Univ Nova Lisboa, Univ Minho</style></publisher><volume><style face="normal" font="default" size="100%">46</style></volume><pages><style face="normal" font="default" size="100%">3753-3765</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">n/a</style></abstract><notes><style face="normal" font="default" size="100%">n/a</style></notes></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Ferreira</style></author><author><style face="normal" font="default" size="100%">SC</style></author><author><style face="normal" font="default" size="100%">Velhinho</style></author><author><style face="normal" font="default" size="100%">A</style></author><author><style face="normal" font="default" size="100%">Silva, M. A. G.,</style></author><author><style face="normal" font="default" size="100%">RJC</style></author><author><style face="normal" font="default" size="100%">Rocha</style></author><author><style face="normal" font="default" size="100%">LA</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Corrosion behaviour of aluminium syntactic functionally graded composites</style></title><secondary-title><style face="normal" font="default" size="100%">Int. J. Mater. &amp; Product Technol.</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2010</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">39</style></volume><pages><style face="normal" font="default" size="100%">122-135</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;n/a&lt;/p&gt;
</style></abstract><work-type><style face="normal" font="default" size="100%">Peer reviewed</style></work-type><notes><style face="normal" font="default" size="100%">&lt;p&gt;n/a&lt;/p&gt;
</style></notes></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Cadavez Tiago</style></author><author><style face="normal" font="default" size="100%">Ferreira Sónia</style></author><author><style face="normal" font="default" size="100%">Medeiros Pedro</style></author><author><style face="normal" font="default" size="100%">Quaresma Paulo</style></author><author><style face="normal" font="default" size="100%">Rocha Luís</style></author><author><style face="normal" font="default" size="100%">Velhinho Alexandre</style></author><author><style face="normal" font="default" size="100%">Vignoles Gérard</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">A Graphical Tool for the Tomographic Characterization of Microstructural Features on Metal Matrix Composites</style></title><secondary-title><style face="normal" font="default" size="100%">Int. J. of Tomography. &amp; Statistics</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2010</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">14</style></volume><pages><style face="normal" font="default" size="100%">3-15</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;n/a&lt;/p&gt;
</style></abstract><work-type><style face="normal" font="default" size="100%">Peer reviewed</style></work-type><notes><style face="normal" font="default" size="100%">&lt;p&gt;n/a&lt;/p&gt;
</style></notes></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Botas</style></author><author><style face="normal" font="default" size="100%">JD</style></author><author><style face="normal" font="default" size="100%">Velhinho</style></author><author><style face="normal" font="default" size="100%">A</style></author><author><style face="normal" font="default" size="100%">Silva, M. A. G.,</style></author><author><style face="normal" font="default" size="100%">RJC</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">A theoretical approach to the elastic behaviour of compact and hollow spherical particles reinforced metal-matrix composites</style></title><secondary-title><style face="normal" font="default" size="100%">Int. J. of Mater. Research</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2010</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">101</style></volume><pages><style face="normal" font="default" size="100%">752-757</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;n/a&lt;/p&gt;
</style></abstract><work-type><style face="normal" font="default" size="100%">Peer reviewed</style></work-type><notes><style face="normal" font="default" size="100%">&lt;p&gt;n/a&lt;/p&gt;
</style></notes></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Quaresma Paulo</style></author><author><style face="normal" font="default" size="100%">Lopes Adriano</style></author><author><style face="normal" font="default" size="100%">Medeiros Pedro</style></author><author><style face="normal" font="default" size="100%">Preto Bruno</style></author><author><style face="normal" font="default" size="100%">Velhinho Alexandre</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Tomo-GPU: Um Ambiente de Resolu&amp;ccedil;&amp;atilde;o de Problemas Destinado &amp;agrave; An&amp;aacute;lise de Dados Tomogr&amp;aacute;ficos Relativos &amp;agrave; Caracteriza&amp;ccedil;&amp;atilde;o Estrutural de Materiais</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2010</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">5</style></volume><pages><style face="normal" font="default" size="100%">NONE</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">n/a</style></abstract><work-type><style face="normal" font="default" size="100%">Peer reviewed</style></work-type><notes><style face="normal" font="default" size="100%">n/a</style></notes></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Botas JD</style></author><author><style face="normal" font="default" size="100%">Velhinho A</style></author><author><style face="normal" font="default" size="100%">Silva RJC</style></author></authors><secondary-authors><author><style face="normal" font="default" size="100%">Marques AT, Silva AF, Baptista APM, Sa C, Alves F, Malheiros LF, Vieira M</style></author></secondary-authors></contributors><titles><title><style face="normal" font="default" size="100%">Elastic Behaviour of Spherical Particles Reinforced Metal-Matrix Composites</style></title><secondary-title><style face="normal" font="default" size="100%">Advanced Materials Forum Iv</style></secondary-title><tertiary-title><style face="normal" font="default" size="100%">Materials Science Forum</style></tertiary-title></titles><dates><year><style  face="normal" font="default" size="100%">2008</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">://000259898200041</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">587-588</style></volume><pages><style face="normal" font="default" size="100%">202-206</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;n/a&lt;/p&gt;
</style></abstract><notes><style face="normal" font="default" size="100%">&lt;p&gt;n/a&lt;/p&gt;
</style></notes></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Ferreira</style></author><author><style face="normal" font="default" size="100%">SC; Velhinho</style></author><author><style face="normal" font="default" size="100%">A; Rocha</style></author><author><style face="normal" font="default" size="100%">LA; Fernandes</style></author><author><style face="normal" font="default" size="100%">FMB</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Microstructure Characterization of Aluminium Syntactic Functionally Graded Composites Containing Hollow Ceramic Microspheres Manufactured by Radial Centrifugal Casting</style></title><tertiary-title><style face="normal" font="default" size="100%">ADVANCED MATERIALS FORUM IV</style></tertiary-title></titles><dates><year><style  face="normal" font="default" size="100%">2008</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan</style></date></pub-dates></dates><pages><style face="normal" font="default" size="100%">207-211</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">n/a</style></abstract><work-type><style face="normal" font="default" size="100%">Peer reviewed</style></work-type><notes><style face="normal" font="default" size="100%">n/a</style></notes></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Velhinho, A.</style></author><author><style face="normal" font="default" size="100%">Braz Fernandes, F.M.,Ferreira, S.C., Rocha, L.A., Vignoles, G., Cloetens, P.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Application of X-ray microtomography to the microstructural characterization of Al-based functionally graded materials</style></title><secondary-title><style face="normal" font="default" size="100%">Adv. in Sci. &amp; Technol.</style></secondary-title><tertiary-title><style face="normal" font="default" size="100%">Advanced Materials Forum</style></tertiary-title></titles><dates><year><style  face="normal" font="default" size="100%">2006</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">45</style></volume><pages><style face="normal" font="default" size="100%">1109-1116</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;n/a&lt;/p&gt;
</style></abstract><notes><style face="normal" font="default" size="100%">&lt;p&gt;n/a&lt;/p&gt;
</style></notes></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Silva N</style></author><author><style face="normal" font="default" size="100%">Velhinho A</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Assessment of particle clustering in MMCs by quantitative image analysis</style></title><secondary-title><style face="normal" font="default" size="100%">Advanced Materials Forum Iii, Pts 1 and 2</style></secondary-title><tertiary-title><style face="normal" font="default" size="100%">Advanced Materials Forum</style></tertiary-title></titles><dates><year><style  face="normal" font="default" size="100%">2006</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">514-516</style></volume><pages><style face="normal" font="default" size="100%">779-783</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">n/a</style></abstract><notes><style face="normal" font="default" size="100%">n/a</style></notes></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Velhinho A</style></author><author><style face="normal" font="default" size="100%">Vignoles GL</style></author><author><style face="normal" font="default" size="100%">Cloetens P</style></author><author><style face="normal" font="default" size="100%">Thibault X</style></author><author><style face="normal" font="default" size="100%">Boller E</style></author><author><style face="normal" font="default" size="100%">Fernandes FB</style></author><author><style face="normal" font="default" size="100%">Rocha LA</style></author><author><style face="normal" font="default" size="100%">Botas JD</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Evaluation of SiC-particle connectivity in functionally graded AI/SiCp composites by synchrotron radiation holographic microtomography</style></title><secondary-title><style face="normal" font="default" size="100%">FUNCTIONALLY GRADED MATERIALS VIII</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan</style></date></pub-dates></dates><publisher><style face="normal" font="default" size="100%">Univ Minho, Univ Nova Lisboa, Univ Nova Lisboa, Univ Bordeaux 1, Univ Minho</style></publisher><volume><style face="normal" font="default" size="100%">492-493</style></volume><pages><style face="normal" font="default" size="100%">621-626</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">n/a</style></abstract><notes><style face="normal" font="default" size="100%">n/a</style></notes></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>13</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Fernandes, F.M. Braz</style></author><author><style face="normal" font="default" size="100%">Luis Augusto Rocha</style></author><author><style face="normal" font="default" size="100%">Velhinho, Alexandre</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Holotomographic analysis of the SiC reinforcement distribution in an Al matrix functionally graded composite fabricated by centrifugal casting</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://ftp.esrf.fr/pub/UserReports/24293_A.pdf</style></url></web-urls></urls><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">n/a</style></abstract><work-type><style face="normal" font="default" size="100%">Peer reviewed</style></work-type><notes><style face="normal" font="default" size="100%">n/a</style></notes></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Velhinho A</style></author><author><style face="normal" font="default" size="100%">Botas JD</style></author><author><style face="normal" font="default" size="100%">Ariza E</style></author><author><style face="normal" font="default" size="100%">Gomes JR</style></author><author><style face="normal" font="default" size="100%">Rocha LA</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Tribocorrosion studies in centrifugally cast Al-matrix SiCp-reinforced functionally graded composites</style></title><secondary-title><style face="normal" font="default" size="100%">Advanced Materials Forum Ii</style></secondary-title><tertiary-title><style face="normal" font="default" size="100%">Materials Science Forum</style></tertiary-title></titles><dates><year><style  face="normal" font="default" size="100%">2004</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">https://docentes.fct.unl.pt/sites/default/files/ajv/files/05_-_mater._sci._forum_455-456_2004_871-875.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">455-456</style></volume><pages><style face="normal" font="default" size="100%">871-875</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;The present work reports results obtained from a series of preliminary experiments&lt;br /&gt;
aiming at complementing the current knowledge about the wear behaviour of centrifugally-cast&lt;br /&gt;
FGM Al/SiCp composites, through concurrent corrosion processes. Precursor MMC’s were&lt;br /&gt;
prepared by rheocasting, using 118.8 μm SiC particles and an Al-10Si–2.2 Mg alloy. Those MMC’s&lt;br /&gt;
were then molten and centrifugally cast in order to produce cylindrical FGMMC’s. Discs machined&lt;br /&gt;
from the top surface of each sample were tested against nodular cast iron pins, using an inverted&lt;br /&gt;
configuration pin-on-disc tribometer. Sliding tests took place at room temperature, over a 50000 m&lt;br /&gt;
sliding distance, with a sliding speed of 0.3 m s-1, under a 5 N normal load; both dry-sliding and&lt;br /&gt;
water-lubricated tests were performed. In order to elucidate the mechanisms involved, the wear&lt;br /&gt;
coefficients were calculated for each condition, and the samples were subjected to morphological&lt;br /&gt;
characterization via SEM/EDS. Concurrently, in the case of the water-lubrication tests, the&lt;br /&gt;
corrosion potential of the tribological pair was monitored. The results obtained show an increase in&lt;br /&gt;
material loss for the water-lubricated cases, although variations are registered depending on&lt;br /&gt;
reinforcing particle volume fraction. At the same time, the open circuit potential response of the&lt;br /&gt;
tribological pair may be correlated with the events of formation/destruction of the tribolayers.&lt;/p&gt;
</style></abstract><notes><style face="normal" font="default" size="100%">&lt;p&gt;n/a&lt;/p&gt;
</style></notes></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Velhinho A</style></author><author><style face="normal" font="default" size="100%">Sequeira PD</style></author><author><style face="normal" font="default" size="100%">Fernandes FB</style></author><author><style face="normal" font="default" size="100%">Botas JD</style></author><author><style face="normal" font="default" size="100%">Rocha LA</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Al/SiCp functionally graded metal-matrix composites produced by centrifugal casting: Effect of particle grain size on reinforcement distribution</style></title><secondary-title><style face="normal" font="default" size="100%">Functionally Graded Materials Vii</style></secondary-title><tertiary-title><style face="normal" font="default" size="100%">FUNCTIONALLY GRADED MATERIALS VII</style></tertiary-title></titles><dates><year><style  face="normal" font="default" size="100%">2003</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">https://docentes.fct.unl.pt/sites/default/files/ajv/files/03_-_mater._sci._forum_423-425_2003_257-262.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">423-4</style></volume><pages><style face="normal" font="default" size="100%">257-262</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Functionally graded materials (FGM’s), particularly in the form of Al-Si metal matrix composites (MMC’s) selectively reinforced at the surface with SiC particles, are advanced materials, combining high wear resistance with high bulk toughness or even a thermal barrier at the surface. Centrifugal casting is one of the most effective methods for processing this type of MMC, but accurate control of the ceramic particles distribution/gradient in the metallic matrix has not yet been completely attained. In this work, precursor Al/SiC composites were prepared by rheocasting, using SiC particles and an Al-10Si–2.2 Mg alloy. Morphology of the SiC particles was previously characterized by laser interpherometry and SEM. Differing grain sizes were selected as reinforcing elements. The MMC’s were then molten and centrifugally cast in order to produce the FGM composites, whose structure and properties were investigated by XRD, quantitative image analysis of optical micrographs and longitudinal hardness profiles. Therefore, it was possible to evaluate the influence of the particle grain size on the structure and properties of the FGM. Apart from the evaluation of the effects of particle grain size per se, its influence when combined with differing casting conditions are reported as well.&lt;/p&gt;
</style></abstract><notes><style face="normal" font="default" size="100%">&lt;p&gt;n/a&lt;/p&gt;
</style></notes></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Velhinho A</style></author><author><style face="normal" font="default" size="100%">Sequeira PD</style></author><author><style face="normal" font="default" size="100%">Martins R</style></author><author><style face="normal" font="default" size="100%">Vignoles G</style></author><author><style face="normal" font="default" size="100%">Fernandes FB</style></author><author><style face="normal" font="default" size="100%">Botas JD</style></author><author><style face="normal" font="default" size="100%">Rocha LA</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Evaluation of Al/SiC wetting characteristics in functionally graded metal-matrix composites by synchrotron radiation microtomography</style></title><secondary-title><style face="normal" font="default" size="100%">Functionally Graded Materials Vii</style></secondary-title><tertiary-title><style face="normal" font="default" size="100%">Functionally Graded Materials VII</style></tertiary-title></titles><dates><year><style  face="normal" font="default" size="100%">2003</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">https://docentes.fct.unl.pt/sites/default/files/ajv/files/04_-_mater._sci._forum_423-425_2003_263-268.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">423-4</style></volume><pages><style face="normal" font="default" size="100%">263-268</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;The concept of functionally graded material (FGM), may be considered as a model particularly interesting to be applied in components for the automotive industry, if reliability and cost can be controlled in an advantageous way. In fact, coupling superior superficial wear resistance with a significant bulk toughness, without compromising important weight savings, by using Al-Si metal matrix composites (MMC’s) selectively reinforced at the surface with SiC particles, is likely to be considered as a innovative advance to that industrial field, if adequate production techniques are developed. Casting under a centrifugal force may well be considered as one of the most effective methods for processing Al-based FGM´s. A primary problem to be faced when producing MMC´s reinforced with ceramic particles is related with the imperfect wetting of the ceramic particles by the molten matrix alloy. A first consequence of defective wetting may be the formation of ceramic-ceramic, ceramic-gas and/or metal-gas interfaces, instead of the desired metal-ceramic interface. Secondly, wetting phenomena play an essential role regarding the physical, chemical and mechanical characteristics of the metal/ceramic interface. A general consequence of these aspects may be related with the degradation of the material properties, be it mechanical, chemical, or thermal in nature. The present work refers to an X-ray microtomography experiment aiming at the elucidation of some aspects regarding particle distribution in SiCp-reinforced functionally graded aluminium composites. Precursor composites were produced by rheocasting. These were then molten and centrifugally cast in order to produce the FGM composites. From these, small cylindrical samples were extracted and observed by X-ray microtomography at the European Synchrotron Radiation Facility (ESRF). The 3D tomographic images were obtained in edge-detection mode (phase-contrast mode), and an adequate segmentation procedure was employed to isolate the pores and SiC particles from the Al matrix. This has allowed a study of the relations between the matrix, the SiC particles, and locally intervening porosities of varying shapes, aiming at a better understanding of the mechanisms involved.&lt;/p&gt;
</style></abstract><notes><style face="normal" font="default" size="100%">&lt;p&gt;n/a&lt;/p&gt;
</style></notes></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Velhinho A</style></author><author><style face="normal" font="default" size="100%">Sequeira PD</style></author><author><style face="normal" font="default" size="100%">Martins R</style></author><author><style face="normal" font="default" size="100%">Vignoles G</style></author><author><style face="normal" font="default" size="100%">Fernandes FB</style></author><author><style face="normal" font="default" size="100%">Botas JD</style></author><author><style face="normal" font="default" size="100%">Rocha LA</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">X-ray tomographic imaging of Al/SiCp functionally graded composites fabricated by centrifugal casting</style></title><secondary-title><style face="normal" font="default" size="100%">Nuclear Instruments &amp; Methods in Physics Research Section B-Beam Interactions with Materials and Atoms</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2003</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">https://docentes.fct.unl.pt/sites/default/files/ajv/files/02_-_nuclear_instr._and_methods_b_200_2003_295-302.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">200</style></volume><pages><style face="normal" font="default" size="100%">295-302</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;The present work refers to an X-ray microtomography experiment aiming at the elucidation of some aspects regarding particle distribution in SiC-particle-reinforced functionally graded aluminium composites.&lt;br /&gt;
Precursor composites were produced by rheocasting. These were then molten and centrifugally cast to obtain the&lt;br /&gt;
functionally graded composites. From these, cylindrical samples, around 1 mm in diameter, were extracted, which were then irradiated with a X-ray beam produced at the European Synchrotron Radiation Facility.&lt;br /&gt;
The 3-D images were obtained in edge-detection mode. A segmentation procedure has been adapted in order to&lt;br /&gt;
separate the pores and SiC particles from the Al matrix. Preliminary results on the particle and pore distributions are presented.&lt;/p&gt;
</style></abstract><notes><style face="normal" font="default" size="100%">&lt;p&gt;n/a&lt;/p&gt;
</style></notes></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>13</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Fernandes, F.M. Braz</style></author><author><style face="normal" font="default" size="100%">Velhinho, Alexandre</style></author><author><style face="normal" font="default" size="100%">Silva, Rui JC</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">3-D tomographic analysis of the SiC reinforcement distribution in an Al matrix composite fabricated by rheocasting</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2002</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://ftp.esrf.fr/pub/UserReports/20032_A.pdf</style></url></web-urls></urls><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">n/a</style></abstract><work-type><style face="normal" font="default" size="100%">Peer reviewed</style></work-type><notes><style face="normal" font="default" size="100%">n/a</style></notes></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Velhinho, Alexandre</style></author><author><style face="normal" font="default" size="100%">Braz Fernandes, F. M.</style></author><author><style face="normal" font="default" size="100%">Botas, J. D.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Microstructural study of aluminium-matrix composites reinforced with SiC</style></title><secondary-title><style face="normal" font="default" size="100%">Advanced Materials Forum I</style></secondary-title><tertiary-title><style face="normal" font="default" size="100%">Key Engineering Materials</style></tertiary-title></titles><dates><year><style  face="normal" font="default" size="100%">2002</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">https://docentes.fct.unl.pt/sites/default/files/ajv/files/01_-_key_eng._mater._230-232_2002_226-230.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">230-2</style></volume><pages><style face="normal" font="default" size="100%">226-230</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Rheocasting, as a semi-solid process, allows the production of aluminium matrix composites at relatively low temperatures (ca. 580ºC), thus favouring a reduced reactivity at the reinforcement-metal matrix interface. When one considers the possibility of further processing (such as any treatment involving remelting, even if partial) of the material, this trait allows a more rigorous control of the interfaces. Composite samples have been produced using as matrix an Al-7Si-0.3Mg alloy reinforced with SiCp (granulometry: 120 μm; Vr = 0.30). These were rheocast at 583ºC, followed by forging and subsequent water-quenching. A structural characterisation (optical microscopy and XRD) of the as-received matrix material, as well as of the reinforced and non-reinforced rheocast material was performed. The phases identification will provide a basis for the understanding of the further processing where the rheocast material will be used as a raw material to produce functionally graded metal-matrix composites by centrifugal casting.&lt;/p&gt;
</style></abstract><notes><style face="normal" font="default" size="100%">&lt;p&gt;n/a&lt;/p&gt;
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