Pressureless sintering of calcium alpha sialons

被引：4
|
作者：
Ta, W [1 ]
Cheng, YB
Muddle, B
Hewett, C
Trigg, M
机构：
[1] Monash Univ, Dept Mat Engn, Melbourne, Vic 3004, Australia
[2] CSIRO, Mfg Sci & Technol, Melbourne, Vic, Australia
来源：
NITRIDES AND OXYNITRIDES | 2000年 / 325-3卷
关键词：
densification; mechanical properties and phase equilibria;
D O I：
10.4028/www.scientific.net/MSF.325-326.199
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In this work, the oxygen rich compositions near the intersection of the alpha-SiAlON plane with the Si3N4-AlN-CaO plane were investigated. The pressureless sintering behaviour was explained in terms of the phase evolution and stability of secondary phases. It was possible to produce low porosity alpha-SiAlON by pressureless sintering where excess second phase for the formation of alpha-SiAlON was present. Preliminary mechanical property investigations for pressureless sintered material resulted in a MOR of 550 MPa, an elastic modulus of 240 GPa, a Vickers hardness of 14.4 GPa and a fracture toughness of 4.5 MPa.m(1/2).
引用
收藏
页码：199 / 205
页数：7
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