Isothermal tetragonal-to-monoclinic phase transformation in Y2O3-partially stabilized zirconia:: The influence of grain size

被引：0

作者：

Li, JF ^{[1
]}

Watanabe, AR ^{[1
]}

机构：

[1] Tohoku Univ, Grad Sch Engn, Dept Mat Proc, Sendai, Miyagi 9808579, Japan

来源：

PROCEEDINGS OF THE FIRST CHINA INTERNATIONAL CONFERENCE ON HIGH-PERFORMANCE CERAMICS | 2001年

关键词：

D O I：

暂无

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：

Phase transformation in ZrO2-2mol% Y2O3 ceramics, with average grain sizes of 0.51 to 0.96 mum, was investigated to explore the influence of grain size on isothermal phase transformation associated with the low-temperature degradation during ageing in different environments (water and vacuum). Contrary to expectations, water-assisted phase transformation did not accelerate monotonously with increasing grain size. Such interesting results can be explained satisfactorily by a new model of phase transformation, which emphasises a synthetic grain-size effect on the nucleation process and the intrinsic phase stability.

引用

页码：285 / 288

页数：4

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