-- The Home Page of the Finishing Industry

on this site
current topics
Live! From beautiful Pine Beach New Jersey: Welcome to the world's most popular metal finishing website

topic 54459

Carbon in gold plate

February 25, 2010

George here,
I'm interested in introducing carbon into a gold plating process, is this possible?

Thank You

George Hope
hobbyist - Attleboro, Massachusetts, USA

February 26, 2010

Hi, George. Anything is possible. The devil is in the details. What are you trying to accomplish?


Ted Mooney,
Teds signature
Ted Mooney, P.E.
Pine Beach, New Jersey
Striving to live "Aloha"

February 28, 2010


All gold deposited from the usual GPC bath contains some carbon in the form of a co-deposited cyanide polymer. This adds some lubricity to the deposit and is part of the reason why electroplated gold has a density of about 17.5 g/c rather than the 'book' density of 19.3 g/cc. Which also explains why thickness/wt calculations are often misleading and lead to endless arguments with inspectors and buyers.

But - if you want lumps of elemental carbon in the deposit, you probably only have to create a suspension of carbon in the plating solution. Don't expect to get a smoooth deposit tho. Getting the particle size etc right may not be easy and gold solutions are expensive to play with.

But, as Ted says, if you tell us what you are trying to achieve, you might get more helpful answers

Good luck

geoff smith
Geoff Smith
Hampshire, England

If you have a question in mind which seems off topic, please Search the Site

ADD a Q, A, or Comment on THIS topic START an UNRELATED topicView CURRENT HOT TOPICS

Disclaimer: It's not possible to 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 may be deliberately harmful.

  If you need a product/service, please check these Directories:

JobshopsCapital Equip. & Install'nChemicals & Consumables Consult'g, Train'g, SoftwareEnvironmental ComplianceTesting Svcs. & Devices

©1995-2019, Inc., Pine Beach, NJ   -   About   -  Privacy Policy
How Google uses data when you visit this site.