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Ted Mooney, P.E. RET

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Experiences with black nickel plating

Lately we have had several requests in our shop for "black nickel". I understand that this can be accomplished in an EN bath during a post plate process, using a common EN strip, or even nitric acid. Anyone have suggestions, experience, with this process? Is the application functional or simply aesthetic? -- Jim

JAMES D MCCARRICK
1996

1996

A black nickel coating is usually accomplished by electro- rather than electroless deposition. The best known bath forms a Zn-Ni deposit that is very thin (1-2 micrometers, if memory serves) and black in color. The protective value of these coatings is minimal, they are mostly used for decorative and functional (solar energy heat exchangers) applications over a protective layer of nickel or nickel-copper.

"PlaterB" Berl Stein
NiCoForm, Inc.

Rochester, New York

November 21, 2008

Good point, Berl. Thanks. letter 7077 also talks about black nickel plating.

Regards,

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey

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