Electropolishing process for cobalt and cobalt alloys

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

2007-09-24

2011-12-20

Neckel, Alexa D. (Department: 1723)

Electrolysis: processes, compositions used therein, and methods

Electrolytic erosion of a workpiece for shape or surface...

Electrolyte composition or defined electrolyte

C205S674000

Reexamination Certificate

active

08080148

ABSTRACT:
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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patent: 6679980 (2004-01-01), Andreacchi
patent: 2003/0178320 (2003-09-01), Liu et al.
patent: 2004/0154931 (2004-08-01), Hongo et al.
patent: E 54186 (1991-12-01), None
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Surmann et al., “Automatisierter Entwurf von Fuzzy Systemen”, VDI Verlag, Reihe 8, Nr. 452, pp. 51-55.

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