Passivate for tungsten alloy electroplating

Details Passivate for tungsten alloy electroplating Passivate for tungsten alloy electroplating

1994-11-09

1998-03-24

Silverberg, Sam

Metal treatment

Process of modifying or maintaining internal physical...

Processes of coating utilizing a reactive composition which...

205197, C23C 2224

Patent

active

057308098

ABSTRACT:
A passivate for tungsten alloy electroplates. The passivate includes an effective quantity of CrO.sub.3 in an aqueous bath having a pH of from about 3.5 to about 7.5.

REFERENCES:
patent: 2788292 (1957-04-01), Giesker
patent: 3098775 (1963-07-01), Thinsk
patent: 3266900 (1966-08-01), Zelley
patent: 3546028 (1970-12-01), Armstrong
patent: 3967984 (1976-07-01), Helwig

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