Method of electrolytically polishing a workpiece comprised of a

Details Method of electrolytically polishing a workpiece comprised of a Method of electrolytically polishing a workpiece comprised of a

1984-08-21

1986-01-07

Tufariello, T. M.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

2041299, 20412995, C25F 322, C25F 324

Patent

active

045632570

ABSTRACT:
A method of electrolytically polishing Fe-, Co-, and Ni alloys, particularly nickel superalloys, wherein at least one fluorine compound is mixed into the electrolyte, which electrolyte is based on a strong acid and is further comprised of at least one weakly polar organic compound and a fluorinated surfactant. The preferred fluorine compound is HBF.sub.4, added the amount of 5 to 40 vol. %. Other fluorine compounds which perform well are ammonium bifluoride, HF, and sodium fluosilicate.

REFERENCES:
patent: 3239440 (1966-03-01), Covington
patent: 3342711 (1967-09-01), Shiga
patent: 3389065 (1968-06-01), Shibasaki
patent: 3627654 (1971-12-01), Petit

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