| 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 HBF4, added the amount of 5 to 40 vol. %. Other fluorine compounds which perform well are ammonium bifluoride, HF, and sodium fluosilicate. |