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How to obtain grey passivate on zinc plating





2000

Dear sir,

How to control color of black passivate in zinc with grey color not black finish?

Best regards

prasarn hutpattanasilp
LorYongSeng - Samutsakorn, Thailand



2000

You can obtain a grey passivation on zinc electrodeposits by increasing the phosphate content of a green passivation.

Emmanuel Popesco
Regal - France


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