四川大学学报（自然科学版）2001，Vol.38Issue(2)：201-204,4.
高压绝缘α-Al2O3涂层的XPS和EELS表面分析
THE SURFACE ANALYSIS BY XPS AND EELS FOR HIGH-VOLTAGE INSULATED α-Al2O3 CERAMICZHENG
郑家贵 1蒋立新 2蔡亚平 1罗四维 2周心明1
作者信息
- 1. 四川大学材料科学系,
- 2. 中国工程物理研究院应用电子研究所,
- 折叠
摘要
Abstract
The mixed coats of Mn, Ti and Cr are applied to α-Al2O3 insulator,and then the heat treatment in special conditions is followed. The electronic energy states of the surface are analysed by XPS and EELS. It is found that coats components changed obviously after annealing. The new phases are formed because coats penetrate into and mix with 95 ceramic a-A12O3. From the results of the valence-band XPS spectrum and EELS,it is suggested that the decrease of energy gaps is because their valence-band top moves towards vacuum level. The increase in density of defectstate, impurity state and surface state in energy gap is beneficial to non-elastic transition of internal secondary electron. And for the decrease in secondary electron emission coefficient.关键词
氧化铝绝缘瓷/涂复热处理方法/XPS/EELS分类
化学化工引用本文复制引用
郑家贵,蒋立新,蔡亚平,罗四维,周心明..高压绝缘α-Al2O3涂层的XPS和EELS表面分析[J].四川大学学报（自然科学版）,2001,38(2):201-204,4.
