XANES studies of chromate replacements in oxide films on aluminum

Conference · Mon Dec 31 23:00:00 EST 1990

OSTI ID:6046698

Davenport, A J; Aldykiewicz, Jr, A J; Isaacs, H S ^[1]; Kendig, M W ^[2]; Mundy, A M ^[3]

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1. Brookhaven National Lab., Upton, NY (United States)
2. Rockwell International Corp., Thousand Oaks, CA (United States). Science Center
3. Half Hollow Hills High School, Dix Hills, NY (United States)

The chemistry of conversion coatings on aluminum containing chromate and non-toxic chromate replacements has been investigated using XANES. Chromate conversion coatings contain 20% 6-valent chromium which is gradually lost on immersion in a corrosive environment. The most promising alternative coatings are those based on phosphotungstate. The chemistry of these and coatings containing Mo, V, and Mn are discussed.

• Research Organization: Brookhaven National Lab., Upton, NY (United States)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC02-76CH00016; FG05-89ER45384
• OSTI ID: 6046698
• Report Number(s): BNL-47017; CONF-911047--13; ON: DE92007176
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360105 -- Metals & Alloys-- Corrosion & Erosion
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102* -- Chemical & Spectral Procedures
ALUMINIUM
CHALCOGENIDES
CHEMICAL ANALYSIS
CHROMATES
CHROMIUM COMPOUNDS
CHROMIUM OXIDES
COATINGS
ELEMENTS
MANGANESE COMPOUNDS
METALS
MOLYBDENUM COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PROTECTIVE COATINGS
REFRACTORY METAL COMPOUNDS
SPECTROSCOPY
TRANSITION ELEMENT COMPOUNDS
VALENCE
VANADIUM COMPOUNDS
X-RAY SPECTROSCOPY