Rust preventive treatment method for aluminum basis material and

Marine propulsion – Screw propeller – Propulsion unit casing

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B63H 512

Patent

active

051394499

ABSTRACT:
A rust preventive method for an aluminum basis material comprises the steps of forming an anodic oxide film on a surface of a basis material made of aluminum or aluminum alloy, sealing the anodic oxide film with molybdenum disulfide, and forming at least one paint coat on top of the film thus obtained. An outboard motor body of aluminum or aluminum alloy has on a surface of it an anodic oxide film sealed with molybdenum disulfide and at least one paint coat on top of the film thus obtained.

REFERENCES:
patent: 4343660 (1982-08-01), Martin
patent: 5009619 (1991-04-01), Meier
Mercury brochure, "The Corrosion Solution", Mercury Outboards, Fond Du Lac, Wis., 1985.

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