Electrolyte for electrochemical polishing of articles made of ti

Details Electrolyte for electrochemical polishing of articles made of ti Electrolyte for electrochemical polishing of articles made of ti

1979-07-30

1980-09-02

Tufariello, T. M.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

C25F 316, C25F 318

Patent

active

042205093

ABSTRACT:
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 L-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 sulphoureid, 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.

REFERENCES:
patent: 3239440 (1966-03-01), Covington
patent: 3632490 (1972-01-01), Covington

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