Q. Do you have any information about black nickel plating?—C.O.
A. If you search the PFOnline.com database for the term “black nickel plating,” you will find a number of articles regarding the subject. Basically, there are two types of baths that are usually used: one based on nickel sulfate and the other on nickel chloride. I strongly recommend that you talk to your chemical vendor and get a commercially available bath. Also, keep in mind that black nickel is considered a decorative finish and is not in the same category as the nickel plate used for corrosion protection.