No cost, no registration, no passwords -- just aloha, fun & authoritative answers
(as an eBay Partner & Amazon Affiliate we earn from qualifying purchases)

Where the
world gathers for metal finishing
Q&As since 1989

-----

Corrosion control for copper with benzotriazole

Can we use benzotriazole as additive in polymer of creating the copper protection film.

Vivek Virkar
packing material supplier - Mumbai, Maharastra, India
2003

Hi, Vivek. Sodium benzotriazole [on eBay or Amazon] is a well known preservative / corrosion inhibitor for copper and it has been added to some lacquer products like Incralac [on eBay or Amazon] or Permalac [adv: Permalac on eBay]. So the general answer is yes, but whether it is compatible with your other materials is an open question. Good luck.

Regards,

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
October 13, 2009

Copper Finish for Thermal transport

Q. My company currently finishes our copper heat spreaders with a nickel plating to prevent corrosion.

My colleague and I have been searching the net to determine if there would be a better finish for the copper.

We require a finish that would not inhibit the thermal transport properties of the copper heat spreader. Some have suggested a benzotriazole finish. Is this a better finish than the nickel plating? Does it add any significant thickness to the part?

Thanks in advance.

Cory Steen
- Rancho Cucamonga, California, USA
July 7, 2014

A. Hi Cory. Benzotriazole is a temporary tarnish inhibitor. The thickness would be millionths of an inch. If the environment is benign it probably has a chance of working for a while, but its corrosion resistance in anything worse than a climate controlled room would probably be minimal. Good luck.

Regards,

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
July 2014

(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: