In situ XANES study of the valence state of chromium during electrochemical polarization of AlCr alloys
Conference
·
OSTI ID:6052083
- 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:
- DOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 6052083
- 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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Conference
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Mon Dec 30 23:00:00 EST 1991
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OSTI ID:10119915
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Journal Article
·
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
·
OSTI ID:537262
Related Subjects
36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
360205 -- Ceramics
Cermets
& Refractories-- Corrosion & Erosion
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
ABSORPTION SPECTROSCOPY
ALLOYS
ALUMINIUM ALLOYS
ALUMINIUM BASE ALLOYS
CHALCOGENIDES
CHROMIUM
CHROMIUM ALLOYS
CHROMIUM COMPOUNDS
CHROMIUM OXIDES
CORROSION RESISTANCE
ELEMENTS
FILMS
METALS
OXIDES
OXYGEN COMPOUNDS
SPECTROSCOPY
THIN FILMS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
VALENCE
X-RAY SPECTROSCOPY
360105* -- Metals & Alloys-- Corrosion & Erosion
360205 -- Ceramics
Cermets
& Refractories-- Corrosion & Erosion
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
ABSORPTION SPECTROSCOPY
ALLOYS
ALUMINIUM ALLOYS
ALUMINIUM BASE ALLOYS
CHALCOGENIDES
CHROMIUM
CHROMIUM ALLOYS
CHROMIUM COMPOUNDS
CHROMIUM OXIDES
CORROSION RESISTANCE
ELEMENTS
FILMS
METALS
OXIDES
OXYGEN COMPOUNDS
SPECTROSCOPY
THIN FILMS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
VALENCE
X-RAY SPECTROSCOPY