FEM STUDY OF OXIDIZED TUNGSTEN SURFACES

被引：4
|
作者：
SOTOLA, J [1 ]
SAVKIN, V [1 ]
KNOR, Z [1 ]
机构：
[1] RUSSIAN ACAD SCI, INST CHEM PHYS, MOSCOW, RUSSIA
来源：
COLLECTION OF CZECHOSLOVAK CHEMICAL COMMUNICATIONS | 1992年 / 57卷 / 12期
关键词：
D O I：
10.1135/cccc19922481
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Surface reconstruction of tungsten induced by oxygen chemisorption in the temperature range 300 K less-than-or-equal-to T less-than-or-equal-to 2 200 K, has been investigated by means of FEM. Two types of surfaces have been used in this study: (i) hemispherical tungten tips exposing small low index planes and stepped regions to the gas phase; (ii) polyhedral tungsten tips exposing large densely populated planes. A model for the reconstruction of a (100) plane is presented, explaining all the phenomena observed by FEM, TDS, LEED and MBS.
引用
收藏
页码：2481 / 2493
页数：13
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