Effect of cooling rate on the location and chemistry of glassy phases in silica-doped 3Y-TZP ceramics

被引：16

作者：

Gremillard, L ^{[1
]}

Epicier, T ^{[1
]}

Chevalier, J ^{[1
]}

Fantozzi, G ^{[1
]}

机构：

[1] Inst Natl Sci Appl, CNRS, UMR 5510, GEMPPM, F-69621 Villeurbanne, France

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2005年 / 25卷 / 06期

关键词：

ZrO2; TZP; grain boundaries; glassy phase; equilibrium thickness; electron microscopy; EELS;

D O I：

10.1016/j.jeurceramsoc.2004.03.032

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The morphology and the composition of glassy phases in silica-doped 3Y-TZP ceramics are studied for two extreme conditions of cooling. On the one hand, materials quenched after sintering exhibit silica-rich glassy phases both at grain boundaries and multiple junctions, with an enrichment of yttrium and zirconium. These observations are related to equilibrium at high temperature. On the other hand, materials slowly cooled exhibit glassy phases only at multiple junctions. During specific conditions of cooling, it is thus shown that dewetting can occur, giving rise to a low temperature equilibrium without glassy phase. (c) 2004 Elsevier Ltd. All rights reserved.

引用

页码：875 / 882

页数：8

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