Aluminum surface having chemical conversion coating and method o

Details Aluminum surface having chemical conversion coating and method o Aluminum surface having chemical conversion coating and method o

1993-07-09

1996-03-19

Robinson, Ellis P.

Stock material or miscellaneous articles

Composite

Of metal

428336, 428470, 428471, 4284722, 106 1416, 106 1421, 106 1444, 252388, 2523891, 25238961, 25238962, B32B 1504

Patent

active

055002889

ABSTRACT:
A chemical conversion coating formed on a surface of an aluminum substrate. The coating comprises a composite material formed by a reaction of a nitrate or sulfate of an alkali metal or alkaline earth metal and an organic compound that can form a compound with aluminum or exhibit a weak basicity an an aqueous aluminum treating liquid comprising the nitrate or sulfate of alkali metal or alkaline earth metal and the organic compound, with the aluminum substrate. The coating is corrosion-resistant, bacteria-proof or fungiproof, and the surface is of a heat exchanger, etc.

REFERENCES:
patent: 2460897 (1949-02-01), Meyer
patent: 3876553 (1975-04-01), Kader
patent: 4098720 (1978-07-01), Hwa
patent: 4612049 (1986-09-01), Berner
patent: 4828616 (1989-05-01), Yamasoe
patent: 4961878 (1990-10-01), Mullins
JP 520042434 A (Showa) Derwent English Abstract, Apr. 1977.

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