The Last Stand of the web we knew & loved: no cost, no reg'n, no popups
As an Amazon Associate & eBay Partner: we earn from qualifying purchases

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

-----

Stopping corrosion of bare copper PCB traces

I am looking for a method of stopping copper corrosion on a PCB. The board is used in a very hostile environment where it sees a temperature change of >50F and relative humidity difference of 20%-80% within one operating cycle. After cleaning the oxidized area, the copper is left bare. Conformal coating isn't an option, so I am currently exploring the possibility of copper passivation. Is it possible to passivate copper with chemical means (much like stainless steel passivation with HNO3)? Also how practical/effective would copper passivation be on such a small scale?

Robert Werkun
Lab - Austin, Texas
2005

(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: