Pressure consolidation of amorphous ZrO2-Al2O3 by plastic deformation of powder particles

被引：17

作者：

Gandhi, AS ^{[1
]}

Jayaram, V ^{[1
]}

机构：

[1] Indian Inst Sci, Dept Met, Bangalore 560012, Karnataka, India

来源：

ACTA MATERIALIA | 2002年 / 50卷 / 08期

关键词：

amorphous materials; powder consolidation; hot pressing; mechanical properties;

D O I：

10.1016/S1359-6454(02)00058-7

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Amorphous ZrO2-Al2O3 powders undergo densification at low temperatures (<650degreesC) and moderate uniaxial pressures (similar to750 MPa). It is established that large pressure dependent densification and little time dependent densification occur. Viscous sintering is not the dominant densification mechanism. Study of the particle size effect in densification of amorphous ZrO2-40% Al2O3, and comparison with hot pressing of borosilicate glass powder at 500 and 550degreesC and cold compaction of silver powder, clearly indicate the possibility of compaction of amorphous ZrO2-Al2O3 by plastic deformation. Good agreement was seen between a model for the compaction of ductile metal powders and the observed hot pressing behaviour. (C) 2002 Acta Materialia Inc. Published by Elsevier Science Ltd. All rights reserved.

引用

页码：2137 / 2149

页数：13

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