Method for producing metal film resistor by electroless plating

Details Method for producing metal film resistor by electroless plating Method for producing metal film resistor by electroless plating

1974-05-17

1976-01-06

Weinblatt, Mayer

Metal treatment

Compositions

Heat treating

106 1, 252514, 427103, 427101, 427123, 427305, C23C 1900, B05D 512

Patent

active

039308960

ABSTRACT:
Method for producing a metal film resistor by (1) treating a base material with a stannous chloride solution, silver salt solution and palladium chloride solution, respectively, (2) subjecting the thus treated base material to electroless plating in a bath having a pH of 9.5-10.5 containing specified amounts of cobalt salts, nickel salts, sodium hypophosphite and specific acetifying agents, at a temperature of 20.degree.-50.degree.C, (3) heat treating the resultant metal film under specified conditions, which are also effective to prevent oxidation of the film and (4) subjecting the heattreated metal film to a surface treatment under specified conditions, which are also effective to cause oxidation of the film.

REFERENCES:
patent: 3105772 (1963-10-01), Loiseieur
patent: 3134690 (1964-05-01), Eriksson
patent: 3432338 (1969-03-01), Sickles
patent: 3586839 (1971-01-01), Roy
patent: 3597266 (1971-08-01), Lelhowitz
patent: 3698919 (1972-10-01), Kuzmik
patent: 3778300 (1973-12-01), Wohlberg
patent: 3846015 (1970-12-01), Vulliez et al.

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