plating, anodizing, & finishing Q&As since 1989
I want the formula for bright copper plating
April 9, 2010
I'm working in an electroplating division. I want the formula for bright copper plating.Mohammad ijaz Hussain
Jasar Al Arabi - Jeddah - Saudi Arabia
April 12, 2010
Hi, Mohammad. The basic chemistry for bright copper plating is fairly simple: copper sulphate plus sulfuric acid. You can find concentrations and operating parameters in the Metal Finishing Guidebook, the Electroplating Engineering Handbook, and similar texts.
But this answer is somewhat misleading because you will want proprietary addition agents, and you will not find the formulas for them in the literature; even if you could, they are often not simple mixtures, but organic chemicals synthesized from precursors (sort of like cracking crude oil to make gasoline or plastics) that few laboratories could manufacture anyway. The practical answer is that bright acid copper plating processes are usually purchased from the major suppliers of plating chemicals. Good luck.
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
April 21, 2010
Copper sulphate - 200 gms/ltr
Sulphuric acid - 32 ml / ltr
Chloride - 60 ppm
Then you contact some supplier for additives who can help you further.
plating process supplier