Stock material or miscellaneous articles – All metal or with adjacent metals – Composite; i.e. – plural – adjacent – spatially distinct metal...
Patent
1983-04-08
1985-06-11
Kaplan, G. L.
Stock material or miscellaneous articles
All metal or with adjacent metals
Composite; i.e., plural, adjacent, spatially distinct metal...
204 28, 204 34, 204 351, 204 42, 204 56R, 428659, C25D 1136
Patent
active
045228922
ABSTRACT:
A steel strip having an excellent phosphate-coating property is produced by subjecting at least one surface of the steel strip to electrolytic treatment in which the steel strip serves as an anode and the steel strip surface is brought into contact with an aqueous solution containing at least one phosphate selected from the group consisting of alkali metal phosphates and ammonium phosphate and having a concentration of phosphoric anions of 0.05 mole/l or more and a pH of from 4 to 7, at an anode current density of 2 A/dm.sup.2 or more, to an extent that a phosphate surface layer is formed in an amount of 0.0001 to 0.05 g/m.sup.2 on the metal strip surface.
REFERENCES:
patent: 2097211 (1937-10-01), Davies
patent: 2132439 (1938-11-01), Romig
patent: 3011958 (1961-12-01), White
patent: 3518169 (1970-06-01), Oyama et al.
patent: 3586612 (1971-06-01), Rajagopalan et al.
Hotta Wataru
Miyauchi Yujiro
Shindow Yoshio
Tsutsumi Masaya
Kaplan G. L.
Leader W. T.
Nippon Steel Corporation
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