ENHANCED FRACTURE-TOUGHNESS IN LAYERED MICROCOMPOSITES OF CE-ZRO2 AND AL2O3

被引：211

作者：

MARSHALL, DB ^{[1
]}

RATTO, JJ ^{[1
]}

LANGE, FF ^{[1
]}

机构：

[1] UNIV CALIF SANTA BARBARA,DEPT MAT,SANTA BARBARA,CA 93106

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1991年 / 74卷 / 12期

关键词：

LAMINATES; FRACTURE TOUGHNESS; CERIUM; ZIRCONIA; ALUMINA;

D O I：

10.1111/j.1151-2916.1991.tb04290.x

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：

Laminar composites, containing layers of Ce-ZrO2 and either Al2O3 or a mixture of Al2O3 and Ce-ZrO2, have been fabricated using a colloidal method that allowed formation of layers with thicknesses as small as 10-mu-m. Strong interactions between these layers and the martensitic transformation zones surrounding cracks and indentations have been observed. In both cases, the transformation zones spread along the region adjacent to the layer, resulting in an increased fracture toughness. The enhanced fracture toughness was observed for cracks growing parallel to the layers as well as for those that were oriented normal to the layers.

引用

页码：2979 / 2987

页数：9

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