PRESSURELESS SINTERING OF SIC-WHISKER-REINFORCED AL2O3 COMPOSITES .1. EFFECT OF MATRIX POWDER SURFACE-AREA

被引：32

作者：

LEE, HW ^{[1
]}

SACKS, MD ^{[1
]}

机构：

[1] UNIV FLORIDA, DEPT MAT SCI & ENGN, DIV CERAM, GAINESVILLE, FL 32611 USA

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1990年 / 73卷 / 07期

关键词：

alumina; composites; sintering; surface area; whiskers;

D O I：

10.1111/j.1151-2916.1990.tb05240.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：

Pressureless sintering of SiC‐whisker‐reinforced Al2O3 composites was investigated. In Part I of the study, the effect of the matrix (Al2O3) powder surface area on densification behavior and microstructure development is reported. Compacts prepared with higher surface area Al2O3 powder showed enhanced densification at lower whisker concentrations (5 and 15 vol%). Samples with 15 vol% whiskers could be pressureless sintered to ∼97% relative density with zero open porosity and ∼1.6‐μm matrix average grain intercept size. Copyright © 1990, Wiley Blackwell. All rights reserved

引用

页码：1884 / 1893

页数：10

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