STRUCTURAL EVOLUTION OF ALUMINA GAMMA-ALUMINUM OXYNITRIDE COMPOSITES DURING HIGH-TEMPERATURE COMPRESSION CREEP

被引：5

作者：

GOEURIOTLAUNAY, D ^{[1
]}

GOEURIOT, P ^{[1
]}

THEVENOT, F ^{[1
]}

CARRY, C ^{[1
]}

机构：

[1] ECOLE POLYTECH FED LAUSANNE,CERAM LAB,CH-1015 LAUSANNE,SWITZERLAND

来源：

JOURNAL OF MATERIALS SCIENCE | 1992年 / 27卷 / 02期

关键词：

D O I：

10.1007/BF00543924

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

TEM studies of Al2O3-gamma-AlON composites show the presence of precipitates in the gamma-AlON phase, due to a partial decomposition of this metastable phase formed during heat treatment. Thermal treatment (1650-degrees-C) has no effect on the microstructure, while compressive creep deformation (1650-degrees-C, 10-30 MPa) leads to a decrease of the gamma-AlON content. This phase decomposes, probably into alumina or alumina-poor AlON. The precipitation process can be activated by the presence of dislocations, and is associated with a slight increase in strain rate during creep.

引用

页码：358 / 364

页数：7

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