PREPARATION AND PROPERTIES OF FINE SI3N4 CERAMICS

被引：0
|
作者：
SAJGALIK, P [1 ]
DUSZA, J [1 ]
机构：
[1] SLOVAK ACAD SCI,INST MAT RES,KOSICE 04353,SLOVAKIA
来源：
SILICON NITRIDE 93 | 1994年 / 89-9卷
关键词：
SILICON NITRIDE; MICROSTRUCTURE; NANOSTRUCTURE; FRACTURE TOUGHNESS; VICKERS HARDNESS;
D O I：
暂无
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：
Substantial refinement of the microstructure is reached by enforcement of the homogenous nucleation during the hot pressing of the starting powder dopped with amorphous silicon nitride. Fine and dense Si3N4 ceramics is prepared, microstructure of this ceramics is characterized with the grains < 1 um, density is > 0.98 T.D. Preliminary measurements reveal high hardness (up to 18 GPa) and fracture tough-less (up to 8 MPa.m(1/2)) of such a ceramics.
引用
收藏
页码：171 / 174
页数：4
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