Selective decomposition of a chromium carbide coating from a chr

Details Selective decomposition of a chromium carbide coating from a chr Selective decomposition of a chromium carbide coating from a chr

1988-06-06

1989-07-25

Tufariello, T. M.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

C25F 500

Patent

active

048510939

ABSTRACT:
A stripping process for the removal of plasma spray applied chromium carbide-nickel chromium coatings from nickel base alloy substrates is disclosed. The coating is decomposed electrolytically by immersing the coated substrate in an alkaline metal hydroxide solution to form the anode of an electrolytic cell and imposing a potential difference across the cells sufficient to decompose the coating without affecting the substrate.

REFERENCES:
patent: 4128463 (1978-12-01), Formanik
patent: 4234333 (1980-11-01), Ghandehari et al.
patent: 4234397 (1980-11-01), Torrey
patent: 4246083 (1981-01-01), Notton
patent: 4261804 (1981-04-01), McGivern, Jr.
patent: 4385972 (1983-05-01), Vanderpool

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