-- The Home Page of the Finishing Industry
Serious Education & the most FUN
you can have in metal finishing smiley

No popups, spam, registration or passwords
on this site
current topics
topic 5603

Silver Plating Stainless Steel for an Electrical Application


My company wants to plate magnetic stainless steel (430 alloy) with silver for an electrical application. We are finding that we get rust in less than 24 hours in a 5% salt spray test with any of the combinations of plating materials we tried. These combinations include Nickel/Silver, Copper/Silver,Copper/Nickel/Silver, and Palladium-Nickel. I don't know the details of the plating processes used. I do know that the plating materials are cathodic with respect to the Iron in the stainless steel so it is not totally surprising corrosion occurs. I know that Zinc is anodic with respect to the Iron. Can Zinc be used as a barrier layer? Any other suggestions that may help solve this problem would be greatly appreciated.

David VanZoest
- Mesa, Arizona, USA


Try a gold strike on the stainless and follow with silver. The gold will provide good adhesion for the silver and also a little extra corrosion protection. Another letter on this site promoted a chloride gold strike directly on stainless. I have also heard this recommended by the gold process tech support people.

bill vins
Bill Vins
microwave & cable assemblies
Mesa (what a place-a), Arizona 

If you have a question in mind which seems off topic, please Search the Site

ADD a Comment to THIS thread START a NEW threadView CURRENT TOPICS

Disclaimer: It's not possible to diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations may be deliberately harmful.

  If you need a product/service, please check these Directories:

JobshopsCapital Equip. & Install'nChemicals & Consumables Consult'g, Train'g, SoftwareEnvironmental ComplianceTesting Svcs. & Devices

©1995-2018, Inc., Pine Beach, NJ   -   About   -  Privacy Policy
How Google uses data when you visit this site.