辐照
氟
等离子体
氟碳化合物
螺旋
离子
氟化物
氧气
材料科学
化学
原子物理学
分析化学(期刊)
放射化学
无机化学
复合材料
冶金
有机化学
核物理学
物理
量子力学
作者
Kyoko Miwa,Noriharu Takada,Koichi Sasaki
出处
期刊:Journal of vacuum science & technology
[American Vacuum Society]
日期:2009-06-29
卷期号:27 (4): 831-835
被引量:55
摘要
Fluorination of Al2O3 and Y2O3 surfaces was investigated by irradiating high-density, helicon-wave CF4∕O2 and SF6∕O2 plasmas. The Al2O3 surface bombarded by high-flux positive ions of the CF4∕O2 plasma was fluorinated significantly. On contrast, Y2O3 was less fluorinated than Al2O3 when they were irradiated by the same CF4∕O2 plasma. The analysis of the Al2O3 surface irradiated by the CF4∕O2 plasma suggests that the fluorination is triggered by reactions between fluorocarbon deposit and Al–O bonding with the assistance of ion bombardment. On the other hand, irradiation of the SF6∕O2 plasma induced less significant fluorination on the Al2O3 surface. This suggests a lower reaction probability between sulfur fluoride deposit and Al–O bonding. The difference in the fluorination of the Al2O3 and Y2O3 surfaces induced by the irradiations of the CF4∕O2 and SF6∕O2 plasmas is understood by comparing the bonding energies of C–O, S–O, Al–O, and Y–O.
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