GROWTH OF IRON-OXIDES ON THE FE(111) SURFACE PRECOVERED WITH SULFUR AND OR POTASSIUM/

Authors
ARABCZYK W NARKIEWICZ U
Citation
W. Arabczyk et U. Narkiewicz, GROWTH OF IRON-OXIDES ON THE FE(111) SURFACE PRECOVERED WITH SULFUR AND OR POTASSIUM/, Applied surface science, 108(3), 1997, pp. 379-384
Citations number
24
Categorie Soggetti
Physics, Condensed Matter","Chemistry Physical","Materials Science, Coatings & Films
Journal title
Applied surface science → ACNP
ISSN journal
01694332
Volume
108
Issue
3
Year of publication
1997
Pages
379 - 384
Database
ISI
SICI code
0169-4332(1997)108:3<379:GOIOTF>2.0.ZU;2-7
Abstract
The oxidation process of the iron surface precovered with sulphur and/ or potassium has been studied using the AES method. Sulphur has an inh ibiting effect on the rate of the oxidation process at the beginning, but when the layer of the iron oxide is formed, the inhibiting effect of sulphur disappears. The oxidation of the potassium precovered iron surface occurs faster than that of the clean one. The layer of iron ox ide is formed under the layer of the potassium atoms. When the iron su rface is precovered with both potassium and sulphur, the oxygen atoms are adsorbed under the layer of sulphur atoms. Sulphur is bound with p otassium and the K-S bond is stable during the oxidation.