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CORROSION PROTECTION OF ALUMINUM

Patent ·
OSTI ID:4702065
;

Treatment of aluminum-base metal surfaces in an autoclave with an aqueous chromic acid solution of 0.5 to 3% by weight and of pH below 2 for 20 to 50 hrs at 160 to 180 deg C produces an extremely corrosion-resistant aluminum oxidechromium film on the surface. A chromic acid concentration of 1 to 2% and a pH of about 1 are preferred. (D.C.W.)

Research Organization:
Originating Research Org. not identified
NSA Number:
NSA-17-029292
Assignee:
U.S. Atomic Energy Commission
Patent Number(s):
US 3096220
OSTI ID:
4702065
Country of Publication:
United States
Language:
English

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Related Subjects

ACIDITY
ALUMINUM
ALUMINUM OXIDES
CHROMIUM OXIDES
CORROSION PROTECTION
FILMS
METALS, CERAMICS, AND OTHER MATERIALS
SOLUTIONS
SURFACES