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topic 7647

Black Chromium sSolution and Anodes


(2001)

Hi,

I want to establish black chromium line. Please guide me how to select solutions and anodes.

Behnam
-Tehran, Iran


(2001)

Hi Behnam,

There are several suppliers of black chromium solutions. In a proprietary process popular in Europe, the anodes are lead/tin anodes (10-15% tin) . The ratio between anode and cathode is important. You must have a ratio anode/cathode 1,2-2,1. The bath is operated at a low temperature, 14 °C.

Regards,

anders sundman
Anders Sundman
3rd Generation in Plating
Consultant - Arvika, Sweden




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