-- The Home Page of the Finishing Industry
23+ years of serious education, promoting Aloha,
& the most fun you can have in metal finishing smiley
    no popups, no spam
on this site
current topics
topic 11037

Ductile Nickel Strikes


I am plating Ni-Au on 426 stainless wire. I need a Ni strike that produces a deposit which has the ductility to pass a 90 degree bend test. I am considering a sulfamate Ni strike, but I have over a dozen formulas. What is the best formulation for a ductile sulfamate strike? I am using cathodic acid activation prior to striking.

Please offer your expert opinions.

Michael C. Brewington
plating shop - Salisbury, Maryland, USA


Most nickel strikes will pass the 90° bend test on make-up but as the solution ages the deposits can become brittle. A typical sulfamate solution would consist of the following 350-450g/L Nickel sulfamate 10-20 g/L of NiCl2 or NiBr2 30-40 g/L of Boric acid Temperature 40-55°C pH 3.5-4.2

Also talk to your chemical supplier of your nickel salts and see what they would recommend. If you maintain your solution with proper filtration and carbon treatments you should not have a problem with ductility.

George Shahin
George Shahin
Atotech - Rock Hill, South Carolina

This public forum has 60,000 threads. If you have a question in mind which seems off topic to this thread, you might prefer to 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.