Influence of a to beta phase transformation on grain growth rate of silicon nitride

被引：6

作者：

Okamoto, Y ^{[1
]}

Hirosaki, N ^{[1
]}

Akimune, Y ^{[1
]}

Mitomo, M ^{[1
]}

机构：

[1] NATL INST RES INORGAN MAT, TSUKUBA, IBARAKI 305, JAPAN

来源：

JOURNAL OF THE CERAMIC SOCIETY OF JAPAN | 1997年 / 105卷 / 06期

关键词：

silicon nitride; phase transformation; grain growth rate; sintering; equilibrium concentration;

D O I：

10.2109/jcersj.105.476

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 influence of the alpha to beta phase transformation on the grain growth rate during liquid phase sintering of Si3N4 is theoretically discussed. When fine starting powders are used, the grain growth rate shows no significant difference between alpha-rich powders and beta-rich powders, and rodlike coarse grains are generated irrespective of the crystal phase of powder. In contrast, the growth rate difference becomes more pronounced with increasing coarseness of the starting powders, the grain growth rate of beta-rich powders decreases more rapidly than that of alpha-rich powder.

引用

页码：476 / 478

页数：3

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