Conversion coating for magnesium, beryllium and their alloys and articles thereof

a technology of conversion coating and beryllium, which is applied in the direction of electrolytic organic material coating, liquid/solution decomposition chemical coating, protein coating, etc., can solve the problems of chromates and related toxic materials being displaced by less toxic alternatives, oxidized or phosphate generated conversion coatings tending to be brittle, and provide no secondary corrosion resistance. , to achieve the effect of easy acceptance of applied coatings and more corrosion resistance surfaces
US20090178586A1Inactive Publication Date: 2009-07-16SAN FU CHEM CO LTD
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Patent Information

Authority / Receiving Office
US · United States
Current Assignee / Owner
SAN FU CHEM CO LTD
Publication Date
2009-07-16
Estimated Expiration
Not applicable · inactive patent
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Abstract

I provide a non-toxic protein and protein compound conversion coated metal article, a painted or plated non-toxic protein and protein compound conversion coated metal article, the aqueous coating solution to provide the in-situ conversion protective coating, and a process of preparing the article. The article is a metal selected from the group consisting of magnesium, magnesium alloy, beryllium and beryllium alloy. The solution has a pH of 3.0 to 12.0 and preferably 4.0 to 10.0 and a protein and protein compound concentration of 0.1 to 10% by weight and the protein and protein compound have a molecular mass of 16,700 to 1,000,000.
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Description

FIELD OF INVENTION

[0001] The present invention relates to the application and generation of a non-toxic and environmentally safe protein or protein compounds based conversion coating for magnesium, its alloys and Beryllium and its alloys. More particularly the invention relates to a composition and a method of conversion coating magnesium, its alloys, and Beryllium and its alloys with a non-toxic and environmentally friendly protein composition that reacts in-situ with the surface of the metal to generate a conversion coating that incorporates the metal in question.BACKGROUND OF THE INVENTION

[0002] The chemical conversion coating of magnesium, its alloys and beryllium and its alloys is known in the art as a process whereby the surface of the metal is chemically converted to a surface that more easily accepts applied coatings, i.e. paint, and / or increases the corrosion resistance of the metal. An industry accepted process for the conversion coating of magnesium, its alloys and berylli...

Claims

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