C - Chemistry – Metallurgy – 23 – C
Patent
C - Chemistry, Metallurgy
23
C
C23C 22/06 (2006.01) C23C 22/08 (2006.01) C23C 22/53 (2006.01) C23C 22/58 (2006.01) C25D 9/08 (2006.01) C25D 11/00 (2006.01)
Patent
CA 2046288
A zinc-base galvanized sheet steel which comprises zinc-base plated sheet steel and, formed on the plating layer surface, an inorganic covering layer which contains at least one inorganic oxide in an amount of 1-500 mg/m2 in terms of the weight of metallic elements exclusive of oxygen and optionally contains at least one oxoacid or inorganic oxide colloid in an amount of 1-500 mg/m2 and further, as desired for improving weldability, a Zn oxide film formed between the inorganic covering layer and the zinc-base plating layer, and the process for producing said galvanized sheet steel.
Arai Katsutoshi
Kanamaru Tatsuya
Morita Junichi
Suzuki Shin'ichi
Gowling Lafleur Henderson Llp
Nippon Steel Corporation
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