Corrosion Protection of Aluminum

Patent · Mon Jul 01 00:00:00 EDT 1963

OSTI ID:4701739

Dalrymple, R. S.; Nelson, W. B.

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.

• Research Organization: Originating Research Org. not identified
• Sponsoring Organization: USDOE
• NSA Number: NSA-17-030945
• Assignee: U.S. Atomic Energy Commission
• Patent Number(s): 3,096,220
• OSTI ID: 4701739
• Country of Publication: United States
• Language: English

Related Subjects

ACIDITY
ACIDS
ALUMINUM
ALUMINUM OXIDES
CHROMIUM COMPOUNDS
CHROMIUM OXIDES
CORROSION PROTECTION
FILMS
METALS, CERAMICS, AND OTHER MATERIALS
PATENT
PRESSURE VESSELS
SOLUTIONS
SURFACES