Process for electro-codepositing inorganic particles and a metal

Details Process for electro-codepositing inorganic particles and a metal Process for electro-codepositing inorganic particles and a metal

1979-06-04

1980-09-16

Tufariello, T. M.

Chemistry: electrical and wave energy

Processes and products

204181C, 204DIG2, C25D 1500, C25D 1502

Patent

active

042228280

ABSTRACT:
A process is provided for the electrolytic codeposition of a metal and solid inorganic particles on an article acting as a cathode. The particles have an average size of less than 300.mu.m and are used in a concentration of 10 to 150 grams per liter of plating bath liquid. The inorganic particles are kept suspended in the bath liquid with a cationic fluorocarbon surfactant present in an amount which is at least the same weight ratio to the particles in the bath liquid as the ratio of surfactant to particles required in an 0.005 N KNO.sub.3 - solution for the particles to assume a zeta-potential of at least +40 mV. Preferably the surfactant consists of a cationic fluorocarbon compound having the structural formulae: ##STR1##

REFERENCES:
patent: 3454487 (1969-07-01), Riddick
patent: 3677907 (1972-07-01), Brown
patent: 3764512 (1973-10-01), Greenwood
patent: 3787294 (1974-01-01), Kurosaki
patent: 3844910 (1974-10-01), Lipp
patent: 3891542 (1975-06-01), Cordone
patent: 4098654 (1978-07-01), Helle

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