Stock material or miscellaneous articles – All metal or with adjacent metals – Having composition – density – or hardness gradient
Patent
1994-06-23
1997-04-08
Zimmerman, John
Stock material or miscellaneous articles
All metal or with adjacent metals
Having composition, density, or hardness gradient
428623, 428626, 428634, 428658, 428659, 205104, 205311, 205312, B32B 1518, B32B 1508, C25D 322
Patent
active
056186347
ABSTRACT:
A zinc or zinc alloy electroplated metal sheet comprises a metal sheet having, on at least one surface thereof, a composite zinc or zinc alloy plated coating formed by electroplating with zinc or a zinc alloy in a plating solution which contains at least one organic compound selected from the group consisting of alkynes, alkynols, amines and salts thereof, thio compounds, heterocyclic compounds, and aromatic carboxylic acids and salts thereof. The composite plated coating has a coating weight of 0.5-200 g/m.sup.2 and contains 0.001-10 wt % of co-deposited carbon. The electroplated metal sheet has improved post-painting corrosion resistance, press formability, and spot weldability.
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Fukui Kiyoyuki
Hikino Shinya
Hosoda Yasushi
Kimoto Masanari
Yoshida Tsutomu
Sumitomo Metal Industries Ltd.
Zimmerman John
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