ELECTROLYTE FOR ELECTROCHEMICAL POLISHING OF ARTICLES MADE OF TITANIUM AND TITANIUM ALLOYS

摘要

Electrolyte for electrochemical polishing of articles made of titanium and titanium alloys contains 45 - 70 wt.-% sulphuric acid, 4 - 20 wt.-% nitric acid, 20 - 35 wt.-% hydrofluoric acid, 0.4 - 1.9 wt.-% sodium salt of .alpha.-sulphocarboxylic acid containing 17 to 20 atoms of carbon in combination with 0.1 - 1.6 wt.-% sodium salt of carboxylic acid containing 17 to 20 atoms of carbon or 1 - 2 wt.-% alkyl sulphureid, 4 - 20 wt.-% water. The present invention increases by 20% the dispersive capacity of the electrolyte which produces a high surface finish on the article, uniformity of the electric potential and improves corrosion resistance of the treated article.