Preparation and mechanical properties of Al2O3-15wt.%ZrO2 composites

被引：69

作者：

Rao, PG ^{[1
]}

Iwasa, M

Tanaka, T

Kondoh, I

Inoue, T

机构：

[1] AIST Kansai, Natl Inst Adv Ind Sci & Technol, Ikeda, Osaka 5638577, Japan

[2] S China Univ Technol, Coll Mat Sci & Engn, Guangzhou 510641, Peoples R China

来源：

SCRIPTA MATERIALIA | 2003年 / 48卷 / 04期

基金：

日本科学技术振兴机构;

关键词：

Al2O3; ZrO2; composites; mechanical properties;

D O I：

10.1016/S1359-6462(02)00440-2

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Low-temperature-sinterable high purity alpha-alumina powder was mixed. with Zr(OH)4 gel synthesized by a precipitation method. The resulting gel mixture was calcined at 600 degreesC for 2 h. The Al2O3-15wt.%ZrO2 composites were sintered for 2 h in air in the temperature range between 1350 and 1500 degreesC. Nearly full densification and the maximum bending strength of 932 MPa were achieved for the Al2O3-15wt.%ZrO2 Composites sintered at 1425 degreesC, whereas the p highest fracture toughness of 8.5 MPa m(1/2) was obtained after sintering at 1475 degreesC. (C) 2002 Acta Materialia Inc. Published by Elsevier Science Ltd. All rights reserved.

引用

页码：437 / 441

页数：5

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