Arthur S. Kushner Consultant
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Chloride Concentrations
Can you give me a titration procedure to check chloride concentrations in the PC-667 acid copper bath?
Read MorePlating on Tellurium Copper Alloys Plating on Tellurium Copper Alloys
I cannot achieve uniform adhesion of either Wood’s nickel or cyanide copper on C14500, tellurium-bearing copper. I clean using reverse current followed by 11 percent HCl, a Wood’s nickel strike and a silver strike. After stripping the failed plate and repeating the process, I sometimes have much better adhesion. Is this due to the aggressive etch provided by the stripping process or better oxide removal provided by the process?
Read MoreMore on Magnetic Parts
In the November 2011 issue of Products Finishing I briefly discussed problems with plating magnetic parts. One of my readers (also a student of mine some 25 years ago) sent me an email mentioning some other causes of parts becoming magnetic. One has to do with the machining and preparation of the parts.
Read MoreExperienced Platers
We are a small, specialized, modern plating and machine shop located in the Southwest. Where can we find ndividuals who are qualified and experienced platers?
Read MoreNickel Dermatitis
I run a captive-nickel plating shop. Is there some type of a test for allergies to nickel—nickel dermatitis—that can be administered prior to hiring an individual for my shop?
Read MoreCopper and Bright Dips
Can you suggest a good formulation for bright dipping of copper alloys? I require a bright dip that will give me good polishing of the copper surface.
Read MorePerspiration
After plating carbon steel with an electroless nickel/boron nitride process, the parts exposed to human perspiration turn black. The thickness of the plate is only 0.0003–0.0005 inch. Is this due to our process, or is it from perspiration that comes in contact with the surface?
Read MoreVisible Nickel
Will areas that are not plated with decorative chrome corrode more rapidly than the areas that are coated?
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