Bifurcation in alumina plates produced by a phase transformation in central, alumina/zirconia thin layers

被引：51

作者：

Sánchez-Herencia, AJ ^{[1
]}

James, L ^{[1
]}

Lange, FF ^{[1
]}

机构：

[1] Univ Calif Santa Barbara, Dept Mat, Santa Barbara, CA 93106 USA

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2000年 / 20卷 / 09期

关键词：

Al2O3; composites; laminates; mechanical properties; slip casting; ZrO2;

D O I：

10.1016/S0955-2219(00)00002-9

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：

Alumina plates with a center, thin layer composed of Al9O3 and ZrO2 (equal volume fractions) have been produced by sequential slip casting. Central layers as thin as 4 mu m were fabricated using a low solid content slurry, but were observed to segregate the two oxides due to segregation of the consolidated layers during slip casting. Thicker layers were homogenous. The ZrO2 tetragonal to monoclinic transformation generated residual, compressive stresses in the thin, center layer. Edge cracking and crack bifurcation was observed when the compressive layer thickness was greater than or equal to 25 mu m. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：1297 / 1300

页数：4

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