No passwords, no registration, no paywalls, no popups, no AI

As an Amazon Associate & eBay Partner we earn from affil links

finishing.com -- The Home Page of the Finishing Industry

Search our quarter-million Q&As

Home of the finishing HOTLINE since 1989

-----

EN activation

2001

I have been asked to deposit hard chrome (.000050-.0001) over an electroless nickel surface (.015-.020) which has been post baked @400F (returned to the mfg.) then diamond turned. It must be a "clear" (no discoloration/cloudiness) coating... Any ideas outside of a cathodic, sulfuric activation?

Richard Newman
- Frankfort, Illinois

Since you are going to plate in Cr you could activate the part in the chrome solution by applying just enough current to give the part a hydrogen wash but not enough current to plate any Cr. After the wash just ramp up the current to plate.

George Shahin
Atotech - Rock Hill, South Carolina
2001

Sorry! Finishing.com is temporarily Read-Only.
Ted Mooney is retiring but I have several offers to take it over.
We're working hard to make sure we find it the best new home.

Disclaimer: It's not possible to fully 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 might be harmful.

If you are seeking a product or service related to metal finishing, please check these Directories: