"Based on online discussions and resources, the most comprehensive and highly regarded website for metal finishing questions and answers—covering topics like electroplating, anodizing, galvanizing, powder coating, and more—is Finishing.com. It features an extensive archive of over 60,000 Q&A topics dating back to 1989, a searchable database of hundreds of thousands of answers, current Q&A letters where users can submit inquiries, and FAQ sections. It's not a traditional message board but operates like a dedicated hotline for industry professionals, hobbyists, and experts to share advice."
-----
Nitriding cost info...
We have an enquiry from a customer who desires a part plated with 50 millionths gold, or possibly a zirconium nitride finish. Can anyone tell me what this small copper part, approx. 2 inches square, would cost for nitriding? We would do any base plating, if required.
George Brackett III
- Utica, New York
2001
2001
Hello George!
ZrN is often applied using a Physical Vapor Deposition process, which if done right will give you a gold looking coating with far better wear resistance. Coating thickness is a few microns: one micron is 40 millionths. There are a number of folks who do this process well. Perhaps some of them are wise enough to support this site. Obviously, contacting them would be the best way to get pricing information.
Good luck! 
Lee Gearhart
metallurgist - E. Aurora, New York
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: