Aloha, fun & authoritative answers -- no cost, no passwords, no popups
(as an eBay Partner & Amazon Affiliate we earn from qualifying purchases)

Metal finishing Q&As since 1989

-----

Copper corrosion and copper sulphate crystals on silver plated copper parts

June 6, 2012

Q. Hello.

I am investigated some problem that we have in my company. From our supplier we received some silver plated copper parts with different defects such as corrosion of copper, and copper sulphate [on eBay or Amazon]crystals on the surface. The corrosion is not noticed right after metallization but only two or three days after it.
When heating the parts (our process) we have problems with "bladders" on the surface, scaling of silver metallization and with the oxidation of copper.
Before treatment we wash and prepare the parts in perchloroethlene.
Supplier also makes other metallizations such as nickel and copper plating, and tinning.

I would appreciate any suggestion or advice about where and why these defects occur.

Thank you.

Ziva Trtnik
process engineer - Ljubljana

(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: