PEOPLE helping each other -- No AI, no cost, no reg'n, no damn popups
(As an Amazon Associate & eBay Partner we earn from qualifying purchases)

Curated with aloha by
Ted Mooney, P.E. RET

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

  The authoritative public forum
  for Metal Finishing 1989-2025

-----

How to palladium plate in lieu of rhodium to tarnish-proof silver

2004

I require to produce a protective coating on silver products that we make, protecting them from sulfide blackening in a volcanic environment (Rotorua).

Silver Anti-tarnish Strips
silver_tarnish_strips

on eBay or

Amazon

(affil links)

From the Pt group metals I would prefer to plate in a bright palladium which is more ductile in post plate forming than rhodium plate.

Using palladium ammonium nitrate, I would like to know what brightener I should use in the plating bath and any other relevant information as our current palladium plate is of a matte finish at various temperatures. The bath palladium concentration of about 5 grams a litre. Next step is to try gas agitation during plating. Rather than waste a lot of time trying different methods it would be good to get a quick answer. Was thinking of trying the brighteners used in nickel plating?

If possible text references would be nice.

Thank you.

Regards

Kevin Ansin
Precious metal refiner and glass bead producer - DUNEDIN, Otago, New Zealand

(No "dead threads" here! If this page isn't currently on the Hotline your Q, A, or Comment will restore it)

Q, A, or Comment on THIS thread -or- Start a NEW Thread

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: