Grok.com: "What is the best website for metal finishing questions and answers?"

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

-----

Gold plating temperature resistance

What is the maximum temperature that gold plating over nickel plating on a copper base alloy can withstand? Will it withstand 600 deg F for 2 hours?

H. Martin
- Toronto, Ontario

Gold plated components can be heated up to 200-250 °C for 2 hrs .This will increase the adhesion of deposition and also in case of an alloy true color of the deposit can be obtained.

Venkat Raja
- Kitchener, Ontario, Canada

At 600 degrees F. nickel will diffuse into the gold and oxidize in air atmosphere causing discoloration. Also copper will diffuse into the nickel layer. Very thick layers with no pores may withstand the temperature without nickel migrating to the surface, but if continued heating discoloration will occur.

Don Baudrand
Consultant - Poulsbo, Washington
(Don is co-author of "Plating on Plastics" [on Amazon or AbeBooks affil links]
and "Plating ABS Plastics" [on Amazon or eBay or AbeBooks affil links])

(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: