Surface preparation process for recoating of used coated metalli

Details Surface preparation process for recoating of used coated metalli Surface preparation process for recoating of used coated metalli

1975-10-09

1976-06-08

Tufariello, T. M.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

20412975, C25F 500, C25F 300

Patent

active

RE0288497

ABSTRACT:
A surface preparation process for use in recoating of used metallic electrodes coated with one or more platinum group metals, one or more iron group metals, or chemical compounds thereof, which comprises using said metallic electrode(s) as anode(s) and passing a current between said metallic electrode(s) and a steel cathode(s) in an aqueous solution of sulfuric acid, nitric acid, perchloric acid, salts thereof, chlorates or persulfates, or a mixture solution thereof, and then dipping said metallic electrode(s) into an aqueous solution of hydrofluoric acid or hydrochloric acid.

REFERENCES:
patent: 2185858 (1940-01-01), Mason
patent: 2371529 (1945-03-01), Loose
patent: 3560358 (1971-02-01), Black

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