Process for manufacturing zinc-silica composite plated steel

Details Process for manufacturing zinc-silica composite plated steel Process for manufacturing zinc-silica composite plated steel

1985-12-13

1987-04-07

Tufariello, T. M.

Chemistry: electrical and wave energy

Processes and products

C25D 1500

Patent

active

046558829

ABSTRACT:
A process for manufacturing zinc-silica composite plated steel performed by electrolyzation in a galvanization bath containing fine grains of silica, particularly colloidal silica fine particles. Surfactant having cationic property, such as polyoxyethylenelaurylamine or dodecyltrimethylammonium chloride is further added to the galavinization bath so that a zinc-silica layer is formed over the steel. The plated steel surfaces are further treated with a silane coupling agent, such as gamma-aminopropyltriethoxysilane. The steel plated with zinc-silica composite thus obtained has excellent resistance against corrosion and adhesion to organic paints or organic adhesives. The steel is suitable for various steel members and sheet iron for automobile bodies and parts which require high corrosion resistance.

REFERENCES:
patent: 3844910 (1974-10-01), Lipp et al.
patent: 4089755 (1978-05-01), Steinecker
patent: 4222828 (1980-09-01), Zuurdeeg
patent: 4444630 (1984-04-01), Steinecker

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