IN-SITU STUDIES OF PASSIVE FILM CHEMISTRY USING X-RAY-ABSORPTION SPECTROSCOPY

被引：21

作者：

DAVENPORT, AJ

ISAACS, HS

BARDWELL, JA

MACDOUGALL, B

FRANKEL, GS

SCHROTT, AG

机构：

[1] IBM CORP,YORKTOWN HTS,NY 10598

[2] NATL RES COUNCIL CANADA,OTTAWA K1A 0R9,ONTARIO,CANADA

来源：

CORROSION SCIENCE | 1993年 / 35卷 / 1-4期

关键词：

D O I：

10.1016/0010-938X(93)90128-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The application of X-ray absorption spectroscopy to the study of passivation of thin metal films is discussed. Data are presented which demonstrate the effectiveness of the technique for monitoring both potential- and time-dependent data on valency and selective dissolution from passive films. It is shown that iron undergoes reductive dissolution from the passive oxide film on both pure iron and Fe-26Cr, in the latter case leading to enrichment of chromium in the passive film. Transpassive dissolution of chromium can take place on Al-Cr and Fe-Cr only after it has been enriched in the passive film by dissolution of the other alloying element. Rapid polarization of Al-Cr leads to trapping of electroactive chromium in the passive film.

引用

页码：19 / 25

页数：7

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