<?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%">Lima, M.M.R.A.a</style></author><author><style face="normal" font="default" size="100%">Monteiro, R.C.C.a</style></author><author><style face="normal" font="default" size="100%">Graça, M.P.F.b</style></author><author><style face="normal" font="default" size="100%">Ferreira Da Silva, M.G.c</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Structural, electrical and thermal properties of borosilicate glass-alumina composites</style></title><secondary-title><style face="normal" font="default" size="100%">Journal of Alloys and Compounds</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2012</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">https://www.scopus.com/inward/record.uri?eid=2-s2.0-84863428569&amp;doi=10.1016%2fj.jallcom.2012.05.024&amp;partnerID=40&amp;md5=5f318f456f762069bd1e31ad5731c53a</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">538</style></volume><pages><style face="normal" font="default" size="100%">66-72</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Borosilicate glass-alumina composites with (1 - x) Glass + x Al 2O 3 (x = 0, 5, 10, 25 vol.%) were prepared and the effect of Al 2O 3 addition on the structural, electrical and thermal characteristics was investigated. XRD patterns revealed the presence of cristobalite (SiO 2) in sintered borosilicate glass and that the addition of Al 2O 3 hinders cristobalite formation. This behavior is due to the diffusion of some Al 3+ ions from alumina to glass, which leads to changes in glass structure and composition as identified by SEM/EDS. Cristobalite was undetected in composites containing 10% Al 2O 3 that attained the lowest thermal expansion coefficient value (∼4.6 × 10 -6 °C -1). Conductivity (dc and ac) increased with the amount of Al 3+ ions present in the glass structure as modifiers and formers. Dielectric constant values, in the range 5.0-7.2, increased with Al 2O 3 addition and the values of loss tan δ (1.5-2.1 × 10 -2) indicate that these materials are good insulators. © 2012 Elsevier B.V. All rights reserved.&lt;/p&gt;
</style></abstract><notes><style face="normal" font="default" size="100%">&lt;p&gt;cited By 27&lt;/p&gt;
</style></notes></record></records></xml>