Brightening additive for tungsten alloy electroplate

Details Brightening additive for tungsten alloy electroplate Brightening additive for tungsten alloy electroplate

1995-02-01

1996-06-11

Niebling, John

Electrolysis: processes, compositions used therein, and methods

Electrolytic coating

Depositing predominantly alloy coating

205255, 205259, 106122, 106125, 106127, C25D 356, B22F 700, C09D 500, C09D 510

Patent

active

055252060

ABSTRACT:
A brightening agent for use in tungsten alloy electroplating baths to replace hexavalent chromium plating or other hard lubrous coatings. Baths of the present invention comprise an effective amount of tungsten ions; an effective amount of a metal ion compatible with tungsten; one or more complexing agents; and an effective amount of a bath soluble alkoxylated hydroxy alkyne for providing brightening of a tungsten alloy electroplate.

REFERENCES:
patent: 4529668 (1985-07-01), Croopnick et al.
patent: 4600609 (1986-07-01), Lever et al.
patent: 5389226 (1995-02-01), Scruggs et al.
Air Products, "Surfynol.RTM. 400 Series", Liquid, Nonionic Surface-Active Agents, Surfynol 440, 465, and 485. (no date).
Chemax, Inc. Material Safety Data Sheet (no date).

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