C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
6/222, 31/47
C09K 3/00 (2006.01) C23C 22/17 (2006.01)
Patent
CA 1101612
~\ ABSTRACT OF THE DISCLOSURE An aqueous acidic oxidant-free zinc phosphate solution contains tartaric acid, citric acid and/or a salt of either. At a pH of about 3.5 to 4.7, the solution produces a micro- crystalline coating of zinc phosphate on iron or steel. The solution preferably contains nickel ion also.
287898
Ayano Yukihiko
Niizuma Akira
Yashiro Kuniji
Oxy Metal Industries Corporation
Swabey Ogilvy Renault
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