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.

引用

页码：867 / 874

页数：8

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