Chromated electro-galvanized steel sheet excellent in corrosion

Details Chromated electro-galvanized steel sheet excellent in corrosion Chromated electro-galvanized steel sheet excellent in corrosion

1976-03-01

1977-12-20

Kaplan, G. L.

Stock material or miscellaneous articles

All metal or with adjacent metals

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

204 38R, 204 40, 204 43Z, 428659, B23P 300, C25D 510, C25D 548

Patent

active

040643204

ABSTRACT:
A chromated electro-galvanized steel sheet is manufactured by electro-galvanizing a steel sheet in an acidic galvanizing bath containing zinc with or without specified amounts of cobalt, or with specified amounts of cobalt and with at least one of chromium (Cr.sup.+3, Cr.sup.+6 or Cr.sup.+3 and Cr.sup.+6) and zirconium; then electro-galvanizing in a zinc-based galvanizing bath containing specified amounts of at least one of chromium (Cr.sup.+3, Cr.sup.+6 or Cr.sup.+3 and Cr.sup.+6), tin and indium; and chromating the resulting steel sheet.

REFERENCES:
patent: 3822118 (1974-07-01), Fukuzuka et al.
patent: 3986843 (1976-10-01), Adaniya et al.
Chemical Abstracts, 63583h, vol. 70, p. 468, (1969).

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