In situ XANES study of the valence state of chromium during electrochemical polarization of AlCr alloys
Conference
·
OSTI ID:10119915
- Brookhaven National Lab., Upton, NY (United States)
- International Business Machines Corp., Yorktown Heights, NY (United States). Thomas J. Watson Research Center
The chemistry of chromium in the passive film on pure chromium and sputtered AlCr thin films has been studied in situ in an electrochemical cell under potential control using XANES. Depending on the rate of potential increase, the 6-valent chromium can dissolve from the alloy or be trapped in the passive film where it is electroactive i.e. the valence state can be reversibly switched between the 3- and 6-valent states by switching the applied potential. The kinetics of these processes were investigated.
- Research Organization:
- Brookhaven National Lab., Upton, NY (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 10119915
- Report Number(s):
- BNL--47016; CONF-911047--17; ON: DE92007452
- Country of Publication:
- United States
- Language:
- English
Similar Records
In situ XANES study of the valence state of chromium during electrochemical polarization of AlCr alloys
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Mon Dec 31 23:00:00 EST 1990
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OSTI ID:6052083
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Journal Article
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Fri Dec 31 23:00:00 EST 1993
· Journal of the Electrochemical Society
·
OSTI ID:142209
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Technical Report
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Wed Oct 01 00:00:00 EDT 1997
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OSTI ID:537262
Related Subjects
36 MATERIALS SCIENCE
360105
360205
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201
ABSORPTION SPECTROSCOPY
ALUMINIUM BASE ALLOYS
CHEMICAL AND PHYSICOCHEMICAL PROPERTIES
CHROMIUM
CHROMIUM ALLOYS
CHROMIUM OXIDES
CORROSION AND EROSION
CORROSION RESISTANCE
THIN FILMS
VALENCE
X-RAY SPECTROSCOPY
360105
360205
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201
ABSORPTION SPECTROSCOPY
ALUMINIUM BASE ALLOYS
CHEMICAL AND PHYSICOCHEMICAL PROPERTIES
CHROMIUM
CHROMIUM ALLOYS
CHROMIUM OXIDES
CORROSION AND EROSION
CORROSION RESISTANCE
THIN FILMS
VALENCE
X-RAY SPECTROSCOPY