Sintering kinetics of α-Al2O3 powder

被引：62

作者：

Zeng, WM ^{[1
]}

Gao, L ^{[1
]}

Gui, LH ^{[1
]}

Guo, JK ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China

来源：

CERAMICS INTERNATIONAL | 1999年 / 25卷 / 08期

基金：

中国国家自然科学基金;

关键词：

powder; sintering; alpha-Al2O3; kinetics;

D O I：

10.1016/S0272-8842(99)00008-5

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 sintering kinetics of alpha-Al2O3 powder are reviewed in this paper. The initial sintering of alpha-Al2O3 micropowder and alpha-Al2O3 nanopowder is all controlled by grain boundary diffusion. The sintering kinetics dominate up to a relative density of 0.77, where the coarsening kinetics dominate during further densification. Herring's scaling law can be used to predict the approximate sintering temperature of alpha-Al2O3 powder and demonstrates that if the particle size can be reduced to < 20 nm, sintering below 1000 degrees C may be possible. (C) 1999 Elsevier Science Ltd and Techna S.r.l. All rights reserved.

引用

页码：723 / 726

页数：4

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