Composite coating steel sheets having good corrosion resistance

Details Composite coating steel sheets having good corrosion resistance Composite coating steel sheets having good corrosion resistance

1981-12-17

1983-10-25

O'Keefe, Veronica

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

428629, 428632, 428666, 428928, 428623, 204 28, C25D 304, C25D 1138

Patent

active

044119640

ABSTRACT:
A composite coating steel sheet is disclosed which has good corrosion resistance, paintability and corrosion resistance after paint coating. The steel sheet comprises a plated base steel sheet, such as a galvanized, zinc alloy plated or aluminum plated steel sheet, and a chromate film formed on the plated base steel sheet. A composite silicate resin film is formed on the chromate film. The composite silicate film is composed of a reaction product of a colloidal silica, an organic resin and a silane compound.

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