PRESSURELESS SINTERED ATZ AND ZTA CERAMIC COMPOSITES

被引：26
|
作者：
CHAIM, R
机构：
[1] Department of Materials Engineering, Technion - Israel Institute of Technology, Haifa
来源：
JOURNAL OF MATERIALS SCIENCE | 1992年 / 27卷 / 20期
关键词：
D O I：
10.1007/BF00541629
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Alumina-20wt % zirconia (ATZ) and zirconia-20 wt % alumina (ZTA) composites were prepared by conventional sintering of commercial powders, with average particle sizes in the range 0.35-0.70 mum. Sintering at 1650-degrees-C for 4 h resulted in final densities up to 96%. Bending strength and hardness increased with the final density. The tetragonal volume fraction was strongly dependent on both the final density and tetragonal grain size. The relatively high fracture toughness of 9 M Pa m1/2 was associated with the highly dense microstructure consisting of tetragonal grains of the critical size.
引用
收藏
页码：5597 / 5602
页数：6
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