XPS STUDIES ON PASSIVE FILMS ON AMORPHOUS FE-CR-(B,P)-C ALLOYS

被引：22

作者：

VIRTANEN, S ^{[1
]}

MOSER, EM ^{[1
]}

BOHNI, H ^{[1
]}

机构：

[1] SWISS FED LABS MAT TESTING & RES,CH-8600 DUBENDORF,SWITZERLAND

来源：

CORROSION SCIENCE | 1994年 / 36卷 / 02期

关键词：

D O I：

10.1016/0010-938X(94)90163-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Passive films on amorphous Fe-10Cr-13B-7C and Fe-10Cr-13P-7C have been studied with X-ray photo-electron spectroscopy (XPS) after passivation in 1N H2SO4 containing Cl-. The most notable feature of the passive films of the amorphous alloys compared to that of a crystalline Fe-17Cr steel is the high amount of oxidized metalloids present in the film. On the surface of the amorphous Fe-1OCr13B-7C and the crystalline Fe-17Cr significant amounts of sulfate were found, whereas on the surface of the amorphous Fe-10Cr-13P-7C alloy the amount of electrolyte anions was almost non-detectable. The anion repelling effect of the passive film on the P-containing alloy is most probably due to the presence of oxidized phosphorus as PO43- in the passive film. As a consequence a coulombic barrier against anion adsorption is formed, which leads to a high localized corrosion resistance of the P-containing alloy.

引用

页码：373 / 384

页数：12

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