HOT HARDNESS BEHAVIOR OF YTTRIUM SIALON CERAMICS

被引：18
|
作者：
EKSTROM, T
PERSSON, J
机构：
[1] Department of Inorganic Chemistry, Arrhenius Laboratory, University of Stockholm, Stockholm
来源：
JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1990年 / 73卷 / 10期
关键词：
hardness; microstructure; sialons; silicon nitride; temperature dependence;
D O I：
10.1111/j.1151-2916.1990.tb06683.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 hot hardness of polycrystalline single‐phase α‐ or β‐ sialon ceramics declines with increasing temperature, but the measured Vickers hardness (HV1) at 1100°C is still about 1550 and 1300 for the α‐sialon and the low‐substituted β‐sialon materials, respectively. The hardness of ‘composite’β‐ or α‐β‐sialon ceramics containing a high volume fraction of glassy phase is lower at all temperatures and drops significantly above about 900°C. Copyright © 1990, Wiley Blackwell. All rights reserved
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页码：2834 / 2838
页数：5
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