Pinholes and Electroless Nickel

Article From: Products Finishing, ,

Posted on: 1/1/2002

Question: What causes pinholes in electroless nickel deposits?

Question:

What causes pinholes in electroless nickel deposits? C.Y.

Answer:

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.

 

Comments are reviewed by moderators before they appear to ensure they meet Products Finishing’s submission guidelines.
blog comments powered by Disqus


Learn More

Zones

Supplier Categories


Technic Inc
Luster-On Products
American Plating Power
Pavco
Insoluble Anodes

Suppliers | Products | Experts | News | Articles | Calendar | Process Zones

The Voice of the Finishing Industry Since 1936 Copyright © Gardner Business Media, Inc. 2014

Subscribe | Advertise | Contact Us | All Rights Reserved