Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ

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

The authoritative public forum
for Metal Finishing since 1989
-----

Need Nickel free and Cobalt free anthracite black on copper

I am working in a plating shop in Chennai, we need to supply nickel cobalt and heavy metal free anthracite black finsh on copper plated zinc base metal.Any body can suggest process.

Thyagarajan Umapathy
Employee - Chennai, Tamilnadu, India
May 8, 2008

Hi, Thyagarajan. Copper can be blackened without additional layers of electroplating.

But zinc and copper are already "heavy metals", the no. 1 and no. 2 heavy metal roadway pollutants, so what are you trying to do? To aggravate that problem by proscribing possibly good solutions like black nickel or black chrome plating wouldn't make much sense, so please try to flesh out what kind of components you are coating, why you are coating them, what environmental conditions they must resist, and why the possibly best solutions must be ruled out. Thanks!

Regards,

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
May 8, 2008

(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: