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

-----

CHROME OR RHODIUM PLATING ALUMINUM

WE WANT TO PLATE AN ALUMINUM PRODUCT USED IN THE MARINE INDUSTRY . WE WANT IT TO BE PROTECTED AS GOOD AS POSSIBLE .WITH A COST FACTOR, WHAT IS THE BEST WAY TO PLATE ALUMINUM TO LAST IN THE ELEMENTS, OF SALT WATER.

ROB MCKAY
- VAN, B.C., CANADA
2006

Hi Bob,
It would be much more expensive to plate Rh, especially with the thickness required for salt water applications. The Rh deposit would be too stressful. I have seen good results with a microcracked hard chrome (bright), with a sulphamate Ni underplate. Good Luck!

Mark Baker
Process Engineer - Syracuse, New York
2006

Forget Rhodium. It cracks and then the seawater will undercut the deposit and lift it right off. In seawater, nothing beats Cadmium. I heard that Zinc-Nickel alloy was supposed to replace Cad, but I don't know how far that's gotten.

Dave Kinghorn
Chemical Engineer
SUNNYvale, California
2006

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: