无机材料学报2001，Vol.16Issue(1)：169-172,4.
共沉淀法制备Al2O3-YAG复相陶瓷及其显微结构研究
Preparation and Microstructure of Al2O3-YAG Composites
1
作者信息
- 1. 中国科学院上海硅酸盐研究所;中国科学院上海硅酸盐研究所;中国科学院上海硅酸盐研究所;日本大阪大学产业科学研究所,;日本大阪大学产业科学研究所,
- 折叠
摘要
Abstract
Polycrystalline Al2O3-YAG composites were obtained by using the coprecipitation method. After calcining at different temperatures, the crystallization of YAG was found at about 1000C. Dense bodies could be got by hot-pressing at 1550C. Bending strength and fracture toughness of Al2O3-5vol%YAG and Al2O3-25vol%YAG composites were 604 MPa and 5.0MPa1/2, 611MPa and 4.5MPa1/2 respectively. It indicated that the incorporation of YAG improved the mechanical property of Al2O3 ceramics. Through TEM observation, large YAG particles (about 1mm) located on the grain boundaries of Al2O3 were seen, and some small YAG particles (100200nm) was among Al2O3 grains in both composites. A lot of white areas were found in Al2O3-5vol% YAG composite, which maybe result from the low concentration of yttrium.关键词
YAG/共沉淀/复合材料/显微结构分类
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..共沉淀法制备Al2O3-YAG复相陶瓷及其显微结构研究[J].无机材料学报,2001,16(1):169-172,4.
