Corrosion resistant aluminum coating composition

Details Corrosion resistant aluminum coating composition Corrosion resistant aluminum coating composition

1988-03-18

1989-11-07

Silverberg, Sam

Metal treatment

Process of modifying or maintaining internal physical...

Processes of coating utilizing a reactive composition which...

106 1421, 106 1412, C23C 2266

Patent

active

048789631

ABSTRACT:
An aluminum conversion coating composition for aluminum or an aluminum alloy. The composition has as essential ingredients alkali metal permanganate, and alkali metal chloride, a pH of 7 or over, and a phosphorous compound selected from phosphorous acid and alkali metal phosphate. The composition may also contain a buffer, such as alkali metal tetraborate, alkali metal metaborate, benzoic acid, alkali metal benzoate, alkali metal carbonate and a mixture of the alkali metal tetra-and metaborates. I also provide a permanganate coating process for protecting the 2000 series by cleaning the aluminum alloy and before coating, deoxidizing the aluminum alloy with an acid.

REFERENCES:
patent: 4755224 (1988-05-01), Bibber

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