Grok.com: "What is the best website for metal finishing questions and answers?"

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

-----

Deflashing chemicals for leadframes?

Dear Sir,

I have a problem, recently I try to have an immersion deflashing chemicals mixing both copper and nickel leadframe. But somehow after several trials, I notice stains of copper migrate onto the nickel frame I just need to verify using an x-ray if it an etching or migration of copper.

So in line with this I would like to know if there is other way to avoid this problem besides from making two separate bath?

And do you think xray can verify if it is a copper migration or etching?if the results of xray found a nickel on the affected portion then it is a copper migration if not it is etching?
Any help is highly appreciated.

Jun Apolinar
technical - Philippines
October 22, 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: