In situ studies of passive film chemistry using X-ray absorption spectroscopy

Alison J. Davenport; Hugh S. Isaacs; Jennifer A. Bardwell; Barry MacDougall; Gerald S. Frankel; Alex G. Schrott

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

In situ studies of passive film chemistry using X-ray absorption spectroscopy

Alison J. Davenport^*, Hugh S. Isaacs, Jennifer A. Bardwell, Barry MacDougall, Gerald S. Frankel, Alex G. Schrott

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	19-25
Number of pages	7
Journal	Corrosion Science
Volume	35
Issue number	1-4
DOIs	https://doi.org/10.1016/0010-938X(93)90128-4
Publication status	Published - 1993
Externally published	Yes

ASJC Scopus subject areas

General Materials Science
Metals and Alloys

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title = "In situ studies of passive film chemistry using X-ray absorption spectroscopy",

abstract = "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.",

author = "Davenport, {Alison J.} and Isaacs, {Hugh S.} and Bardwell, {Jennifer A.} and Barry MacDougall and Frankel, {Gerald S.} and Schrott, {Alex G.}",

year = "1993",

doi = "10.1016/0010-938X(93)90128-4",

language = "English",

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pages = "19--25",

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TY - JOUR

T1 - In situ studies of passive film chemistry using X-ray absorption spectroscopy

AU - Davenport, Alison J.

AU - Isaacs, Hugh S.

AU - Bardwell, Jennifer A.

AU - MacDougall, Barry

AU - Frankel, Gerald S.

AU - Schrott, Alex G.

PY - 1993

Y1 - 1993

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=0027841597&partnerID=8YFLogxK

U2 - 10.1016/0010-938X(93)90128-4

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

M3 - Article

AN - SCOPUS:0027841597

SN - 0010-938X

VL - 35

SP - 19

EP - 25

JO - Corrosion Science

JF - Corrosion Science

IS - 1-4

ER -

In situ studies of passive film chemistry using X-ray absorption spectroscopy

Abstract

ASJC Scopus subject areas

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