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Title: CORROSION PROTECTION OF ALUMINUM

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.)
Authors:
;
Publication Date:
OSTI Identifier:
4702065
Report Number(s):
US 3096220
Resource Type:
Patent
Resource Relation:
Patent File Date: 1960 Oct 31; Other Information: Orig. Receipt Date: 31-DEC-63
Research Org:
Originating Research Org. not identified
Country of Publication:
United States
Language:
English
Subject:
METALS, CERAMICS, AND OTHER MATERIALS; ACIDITY; ALUMINUM; ALUMINUM OXIDES; CHROMIUM OXIDES; CORROSION PROTECTION; FILMS; SOLUTIONS; SURFACES