DENSIFICATION OF ALUMINA-SILICON CARBIDE POWDER COMPOSITES .2. MICROSTRUCTURAL EVOLUTION AND DENSIFICATION

被引：10

作者：

JANG, HM ^{[1
]}

RHINE, WE ^{[1
]}

BOWEN, HK ^{[1
]}

机构：

[1] MIT,MAT PROC CTR,CERAM PROC RES LAB,CAMBRIDGE,MA 02139

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1989年 / 72卷 / 06期

关键词：

Alumina--Compaction - Powder Metal Products--Alumina - Powder Metallurgy--Densification - Silicon Carbide--Coatings;

D O I：

10.1111/j.1151-2916.1989.tb06251.x

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：

Microstructural evolution and densification kinetics of Al2O3-SiC powder composites were studied using two different SiC powders. Examination of the microstructural evolution of Al2O3-fine SiC powder composites showed three well-defined stages of densification: the first was characterized by constant pore size and no grain growth; the second involved rapid pore coarsening and grain growth; the third was characterized by pore shrinkage and slow grain growth. Studies of the densification kinetics of Al2O3-coarse SiC powder composites exhibited two stages of densification: in the first stage there were no significant differences in densification rate between pure Al2O3 compacts and composites; in the second stage, however, differences in densification behavior between pure Al2O3 compacts and composites became pronounced.

引用

页码：954 / 958

页数：5

共 6 条

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JANG, HM
RHINE, WE
BOWEN, HK
[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1989, 72 (06) : 948 - 953
[3] NAHASS P, UNPUB J AM CERAM SOC
[4] SINTERING BEHAVIOR OF BI-MODAL POWDER COMPACTS
RAJ, R
BORDIA, RK
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[5] SUMITA S, 1988, CERAMIC T CERAMIC PO, V2, P840
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