Pinholes and Electroless Nickel
What causes pinholes in electroless nickel deposits?
What causes pinholes in electroless nickel deposits? C.Y.
Here are a few general areas to investigate. Your EN bath may contain organic impurities or have suspended matter. Organic impurities can end up in your bath from a couple of sources, such as the air used for agitation, dragin or incorrect tank materials. Using better filtration can reduce suspended matter.
Your base metal may have pits or other imperfections on the surfaces. Zinc diecasts are a good example of this type of problem.
The chemical balance of your tank may be out of control. If your bath is not under good control, larger than normal amounts of hydrogen may be formed on the surface of your parts giving rise to pinholes and/or pits.
Our expert, Art Kushner, says yes, you can color stainless steel, but it is not a process that is typically performed in a plating shop. Read more about his answer.
An overview of decorative and hard chromium electroplating processes.
Masking is employed in most any metal finishing operation where only a specifically defined area of the surface of a part must be exposed to a process. Conversely, masking may be employed on a surface where treatment is either not required or must be avoided. This article covers the many aspects of masking for metal finishing, including applications, methods and the various types of masking employed.