SEEDED SOL-GEL DERIVED ALUMINA-ZIRCONIA COMPOSITES

被引：8
|
作者：
SRDIC, V
RADONJIC, L
机构：
来源：
CERAMICS INTERNATIONAL | 1995年 / 21卷 / 01期
关键词：
D O I：
10.1016/0272-8842(95)93265-5
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The effect of alpha-alumina seed particles on the densification and microstructure development of the sol-gel derived alumina-zirconia composites has been studied. The alumina-zirconia sols have been prepared from two different alumina sols (polymer and particulate) and two different types of zirconia particles. Addition of the seed particles decreases the theta to alpha-alumina transformation temperature by more than 100 degrees C and changes its mechanism, resulting in a homogeneous and very fine scale composite microstructure The ct-alumina seed particles do not have the same efficiency on the polymer and particulate alumina matrix transformation Besides, it has been shown that densification, the homogeneity of the zirconia particles distribution and the temperature of the martensitic tetragonal to monoclinic zirconia transformation are determined by the nature and the size of the original zirconia particles.
引用
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页码：5 / 11
页数：7
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