Invention Grant
US09435039B2 Protective conversion coating on mixed-metal substrates and methods thereof 有权
混合金属基材上的保护转化涂层及其方法

Protective conversion coating on mixed-metal substrates and methods thereof
Abstract:
Mixed-metal automotive vehicle bodies-in-white comprising ferrous metal surfaces, zinc surfaces, aluminum alloy surfaces, and magnesium alloy surfaces are cleaned and immersed in an aqueous bath comprising an adhesion promoter and an aqueous electrocoat bath (the adhesion promoter may be in the electrocoat bath. The adhesion promoter, which may be a cerium salt, is selected to react with each metal in the body surfaces to form an oxide layer that provides corrosion resistance for the surface and adherence for the deposited polymeric paint coating. The body is cathodic in the electrocoat deposition.
Information query
Patent Agency Ranking
0/0