-- The Home Page of the Finishing Industry

on this site
current topics

60,000 Q&A topics -- Education, Aloha, & Fun

topic 8831

Bright nickel plated aluminum


I am trying to electroplate a bright nickel coating onto aluminum. I have a zincate layer followed by a copper strike layer. I have tried adding brighteners to our nickel sulfamate bath but the plate is very brittle. I have also tried a watts bath but the same thing happens. Every bath that I have tried is always brittle. I need shiny with great adhesion.

- Canada


Skip the Copper undercoat as this will give you adhesion problems contrary to popular belief. Double Zincate your parts carefully and directly plate in a normal Watts Bath.


Khozem Vahaanwala
Khozem Vahaanwala
Saify Ind supporting advertiser
Bangalore, Karnataka, India

saify logo


After the double zincate I would advice to use an alkaline electroless nickel and than you can use a watts nickel. If you skip the alkaline EN then you will need a cyanide copper followed by a watts nickel. One more thing, are you sure that the problem is brittle nickel, maybe it is a poor adhesion coming from not adequate pretreatment. You did not mention a deoxidizer prior to the zincate. I hope a deox is a part of your preplating processes otherwise you will have adhesion problems.

sara michaeli
Sara Michaeli sara michaeli signature
chemical process supplier
Tel-Aviv, Israel

this text gets replaced with bannerText
spacer gets replaced with bannerImages

Q, A, or Comment on THIS thread SEARCH for Threads about ... My Topic Not Found: Start NEW Thread

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 Compliance

©1995-2020, Inc., Pine Beach, NJ   -   About   -  Privacy Policy
How Google uses data when you visit this site.