| Phase composition and structure of grain boundary of oversintered Y3Al5O12 ceramics |
| |
| 作者姓名： | 李长青 左洪波 韩杰才 张明福 孟松鹤 姚泰 |
| |
| 作者单位： | Center for Composite Materials, Harbin Institute of Technology, Harbin 150008, China |
| |
| 基金项目： | Foundation item： Project（41312040404） supported by the National Defence ＂15＂ Pre-Research Foundation of China |
| |
| 摘 要： | Phase composition and microstructures of grain boundary of oversintered yttrium aluminum garnet （Y3Al5O12, YAG） ceramics by vacuum sintering at 1 850 ℃ were investigated. For synthesizing YAG, grain boundary is a key factor for YAG ceramics. The morphology of grain boundary was observed by SEM, TEM and its composition was analyzed by EDS. It is identified that the grain boundary is composed of a-AI2O3 and yttrium aluminum perovskite （YAP, YAlO3） eutectics. At the edge of YAG crystal grain, YAG phase is decomposed into perovskite YAP and α-Al2O3 during high temperature sintering. Due to refractive indexes of YAP and α-Al2O3 phases in wide grain boundary are different from those of YAG, the transmittance of oversintered YAG ceramics is lower than that of YAG ceramics sintered at 1 750 ℃.
|
| 关 键 词： | 铝 高温条件 陶瓷 应变分析 |
| 收稿时间： | 2006-07-28 |
| 修稿时间： | 2006-09-15 |
Phase composition and structure of grain boundary of oversintered Y3Al5O12 ceramics |
| |
| LI Chang-qing, ZUO Hong-bo, HAN Jie-cai, ZHANG Ming-fu, MENG Song-he, YAO Tai.Phase composition and structure of grain boundary of oversintered Y3Al5O12 ceramics[J].Transactions of Nonferrous Metals Society of China,2006,16(A03):1936-1939. |
| |
| Authors: | LI Chang-qing ZUO Hong-bo HAN Jie-cai ZHANG Ming-fu MENG Song-he YAO Tai |
| |
| Abstract: | |
| |
| Keywords: | |
| 本文献已被 维普 等数据库收录！ |
|
