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Electropolishing Cobalt Chromium

I need information regarding electropolishing of Cobalt Chromium. What would be the best electrolyte to use? I know the process of polishing stainless steel quite well. Is there a big difference in polishing Cobalt Chromium compared to polishing 316 SS? Any form of help would be greatly appreciated.

Arthur Marsden
- Cape Town, South Africa

In order to electropolish cobalt you either use strong acids with conventional method or environmentally safe salty electrolyte with special high-voltage equipment. Look at the pictures on our web site to see sample of such equipment and some polished cobalt parts.

Anna Berkovich
Russamer Lab

Pittsburgh, Pennsylvania

July 2, 2010

Anna, a question, What do you mean with high voltage? Do you think 20 volts is high enough for electropolishing cobalt chromium? I have tried till 16 volts but I have not succeeded.
Best regards

Isabel Pérez
medical device - Spain

Sorry Isabel, but I cannot reveal this technological process since it has been licensed exclusively to one of the medical implants manufacturing companies.

Anna Berkovich
Russamer Lab

Pittsburgh, Pennsylvania

July 6, 2010

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