CREEP DEFORMATION AND THE GRAIN-BOUNDARY RESISTIVITY OF TETRAGONAL ZIRCONIA POLYCRYSTALLINE MATERIALS

被引：30

作者：

BADWAL, SPS

CIACCHI, FT

SWAIN, MV

ZELIZKO, V

机构：

[1] CSIRO, Division of Materials Science and Technology, Clayton, Victoria

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1990年 / 73卷 / 08期

关键词：

creep; grain boundary; mechanical properties; zirconia; zirconia: tetragonal polycrystals (TZP);

D O I：

10.1111/j.1151-2916.1990.tb07620.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：

The grain‐boundary resistivity of tetragonal zirconia polycrystals, which had undergone creep with different applied compressive loads and at different temperatures, has been measured with impedance spectroscopy. A stress exponent of unity was determined from strain rate versus stress data. The grain‐boundary resistivity decreased significantly with increasing stress at a constant creep temperature indicating squeezing out of the glassy phase from interfaces between grains. This, however, had no effect on the activation energy for the grain‐boundary resistivity. Copyright © 1990, Wiley Blackwell. All rights reserved

引用

页码：2505 / 2507

页数：3

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