CONDUCTIVITY AND CREEP IN ACCEPTOR-DOMINATED POLYCRYSTALLINE AL2O3

被引:38
作者
HOU, LD
TIKU, SK
WANG, HA
KROGER, FA
机构
[1] Department of Materials Science, University of Southern California, Los Angeles, 90007, California
关键词
D O I
10.1007/BF00551027
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Ionic and electronic conductivity and compressive creep of hot-pressed polycrystalline acceptor-dominated Al2O3 were measured as a function of oxygen partial pressure and grain size varying from 3 to 200 μm. Hole conduction shows a slight preference for grainboundaries; ionic conduction is slightly hindered by grain boundaries, indicating that fast oxygen grain-boundary diffusion involving charged species does not occur. Conductivity and creep are accounted for on the basis of a model in which there is fast grain-boundary migration by a neutral oxygen species. © 1979 Chapman and Hall Ltd.
引用
收藏
页码:1877 / 1889
页数:13
相关论文
共 38 条