Brightening additive for tungsten alloy electroplate
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United States of America Patent
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Jun 11, 1996
Grant Date -
N/A
app pub date -
Feb 1, 1995
filing date -
Feb 1, 1995
priority date (Note) -
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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.
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