Galvanized steel sheet protected by chromium and chromium oxide

Details Galvanized steel sheet protected by chromium and chromium oxide Galvanized steel sheet protected by chromium and chromium oxide

1984-02-10

1985-04-16

O'Keefe, Veronica

Stock material or miscellaneous articles

All metal or with adjacent metals

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

428629, 428659, C25D 304

Patent

active

045116334

ABSTRACT:
Steel sheet, especially suitable for car-body fabrication, galvanized and further protected by a layer of metallic chromium and hydrated oxides of chromium, electrolytically deposited. The improvement is that the metallic chromium is present in extremely fine particles that exert a very marked covering and protective effect on the underlying zinc. In this way, and with the help of the chromium oxides that further cover and protect the underlying layers, a product is obtained whose corrosion resistance is far superior to that of similar products.

REFERENCES:
patent: 3323881 (1967-06-01), Nelson et al.
patent: 3428441 (1969-02-01), Du Rose et al.
patent: 3816082 (1974-06-01), Austin et al.
patent: 4159230 (1979-06-01), Barnes et al.
patent: 4411964 (1983-10-01), Hara et al.
patent: 4421828 (1983-12-01), Alloue et al.
patent: 4437944 (1984-03-01), Bruno et al.

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