Nickel strip formulation

Details Nickel strip formulation Nickel strip formulation

1986-04-21

1988-01-19

Demers, Arthur P.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

252 794, C25F 500

Patent

active

047203323

ABSTRACT:
The present invention relates to the chemical stripping of nickel and nickel alloys from metallic and non-metallic substrates wherein at least one compound that is, or can form in solution, a zwitterion acts as a complexing agent for the metal being dissolved and as a buffer to control the pH of the stripping solution. The present invention discloses an electrical method for the rapid stripping of high-phosphorus electroless nickel plating. The present invention provides an electrical process for the efficient removal of the residual smut that ensues from the sulfide ion catalysis of the chemical stripping process.

REFERENCES:
patent: 2200782 (1940-05-01), Vollmer
patent: 2649361 (1953-08-01), Springer et al.
patent: 2698781 (1954-01-01), Meyer
patent: 3203787 (1965-08-01), Grunwald
patent: 3245780 (1966-04-01), Weisberg et al.
patent: 3365401 (1968-01-01), Saubestre et al.
patent: 3649489 (1972-03-01), Dillenberg
patent: 4111767 (1978-09-01), Kawagishi

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