钇铝石榴石(YAG)粉体的溶胶凝胶法制备  

Preparation of the Y_3Al_5O_(12)powder by a sol-gel process

作　　者：常振东[1] 邓仲华[2] CHANG Zhen-dong DENG Zhong-hua(Research Institute of Surface Engineering, Beijing Institute of Aeronautical Materials, Beijing 100095, China College of Materials and Metallurgy, Guizhou University, Guiyang 550025, China)

机构地区：[1]北京航空材料研究院表面工程研究所,北京100095 [2]贵州大学材料与冶金学院,贵州贵阳550025

出　　处：《真空》2017年第4期60-63,共4页Vacuum

摘　　要：本文以Y_2O_3、Al(NO_3)_3以及柠檬酸为原料,采用溶胶凝胶法在不同温度下烧结合成了YAG粉体,利用XRD,SEM和能谱分析等测试技术对粉体的物相结构及粉体形貌进行了分析表征。结果表明,采用溶胶凝胶法成功地合成了晶粒尺寸为30-60nm的YAG粉体,并确定了在1200℃下可烧成很好的YAG晶相结构,随着煅烧温度的升高,YAG平均晶粒尺寸增大。YAG powder was synthesized at three different temperatures via a sol-gel process by using Y2O3, Al（NO3）3·9H2O and C6H8O7·H2O as starting materials. The phase structure and morphology of the powders were characterized by XRD, SEM and energy spectrum analysis, respectively. The results show that YAG powder with the grain size of 30-60 nm can be prepared successfully by a sol-gel process. It also shows that the crystal phase of YAG is perfect at the calcination temperature of 1200℃. The average grain size of YAG powder gradually increases with increasing the calcination temperature.

关 键 词：溶胶凝胶法 YAG 粉体 热障涂层 

分 类 号：TB44[一般工业技术]