Stock material or miscellaneous articles – All metal or with adjacent metals – Composite; i.e. – plural – adjacent – spatially distinct metal...
Patent
1998-03-16
2000-10-10
Jones, Deborah
Stock material or miscellaneous articles
All metal or with adjacent metals
Composite; i.e., plural, adjacent, spatially distinct metal...
428633, 428639, 428659, C23C 206, C25D 526
Patent
active
061299952
ABSTRACT:
A zinciferous coated steel sheet comprises a steel sheet, a zinciferous coating layer formed on the steel sheet, a Fe--Ni--Zn--O film formed on the zinciferous coating layer, and an oxide layer formed on a surface portion of the Fe--Ni--Zn--O film. The method comprises providing an electrolyte of an acidic sulfate aqueous solution, carrying out an electrolysis treatment in the electrolyte under a current density ranging from 1 to 150 A/dm.sup.2, and carrying out an oxidation treatment to a surface of the zinciferous coated steel sheet.
REFERENCES:
patent: 4578122 (1986-03-01), Crotty
patent: 5849423 (1998-12-01), Urakawa et al.
Database WPI, Section Ch, Week 7805, Derwent Publications Ltd., Class M13, An 78-09533A XP002060634 of JP 52 152834 A (Nisshin Steel Co Ltd), Dec. 19, 1977.
Patent Abstracts of Japan, vol. 012, No. 467 (C-550), Dec. 7, 1988 of JP 63 186883 A (Nippon Steel Corp), Aug. 2, 1988.
Patent Abstracts of Japan, vol. 012, No. 358 (C-531), Sep. 26, 1988 of JP 63 114999 A (Sumitomo Metal Ind Ltd), May 19, 1988.
Hashimoto Satoshi
Imokawa Toru
Inagaki Jun-ichi
Sagiyama Masaru
Sakurai Michitaka
Jones Deborah
NKK Corporation
Savage Jason
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