Improvement of high-temperature strength of hot-pressed sintering silicon nitride with Lu2O3 addition

被引：84
作者：
Guo, SQ [1 ]
Hirosaki, N [1 ]
Yamamoto, Y [1 ]
Nishimura, T [1 ]
Mitomo, M [1 ]
机构：
[1] Natl Inst Mat Sci, Adv Mat Lab, Tsukuba, Ibaraki 3050044, Japan
来源：
SCRIPTA MATERIALIA | 2001年 / 45卷 / 07期
关键词：
Si(3)N(4); Lu(2)O(3); grain boundary phase; crystallization; high-temperature strength;
D O I：
10.1016/S1359-6462(01)01111-3
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The flexural strength of Lu(2)O(3)-doped hot-pressed sintering Si(3)N(4) was studied in N(2), at elevated temperatures, The high-temperature strength above 1400 degreesC was significantly improved due to Lu(2)O(3) addition. This was attributed to the formation of a grain boundary phase, with a higher melting point, which was extensively crystallized during the sintering process. (C) 2001 Acta Materialia Inc. Published by Elsevier Science Ltd. All rights reserved.
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页码：867 / 874
页数：8
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