Conversion composition and process
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United States of America Patent
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Jan 8, 1991
Grant Date -
N/A
app pub date -
Feb 16, 1990
filing date -
Feb 27, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The production of uniformly blackened nickel deposits for decorative or functional purposes can be achieved by depositing nickel from an electroless nickel plate composition or electrolytically followed by forming a conversion coating on the electroless nickel deposit in a chromate bath which includes nitrate ions.
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