Electropolishing process for cobalt and cobalt alloys

Details Electropolishing process for cobalt and cobalt alloys Electropolishing process for cobalt and cobalt alloys

C - Chemistry, Metallurgy

25

F

C25F 3/22 (2006.01)

Patent

CA 2604387

The present invention relates to a method of electrochemical polishing of surfaces of cobalt or cobalt alloys. It employs an electrolyte comprising glycolic acid and at least one alkane-sulfonic acid with an alkyl residue that has 1 to 3 carbon atoms. This electrolyte is also one aspect of the present invention. In one embodiment, at least one alkane-sulfonic acid comprises methane-sulfonic acid. The electrolyte and the method using this electrolyte are suitable in particular for surfaces of cobalt or cobalt alloys, including cobalt-chromium alloys such as stellite.

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