MICROSTRUCTURE AND MECHANICAL-PROPERTIES OF ZRO2-2 MOL-PERCENT Y2O3 CERAMICS

被引：14

作者：

ZHOU, Y

GE, QL

LEI, TC

SAKUMA, T

机构：

[1] Department of Metals and Technology, Harbin Institute of Technology, Harbin

[2] Department of Materials Science, The University of Tokyo, Tokyo

来源：

CERAMICS INTERNATIONAL | 1990年 / 16卷 / 06期

关键词：

D O I：

10.1016/0272-8842(90)90086-U

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 microstructure and mechanical properties of ZrO2-2 mol% Y2O3 ceramics were studied on samples prepared by cold isostatic pressing and pressureless sintering. It was shown that the density of the alloy increases with increasing sintering temperature. The Vickers hardness decreases with the appearance of the monoclinic phase and increasing its content. Compared with the single tetragonal phase, the (t + m) dual-phase structure with microcracks has a much higher fracture toughness (16·5 MPa√m) because of a complex mechanism of toughening (transformation, microcracks and residual stresses). © 1990.

引用

页码：349 / 354

页数：6

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