No passwords, no registration, no paywalls, no popups, no AI

As an Amazon Associate & eBay Partner we earn from affil links

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

Search our quarter-million Q&As

Home of the finishing HOTLINE since 1989

-----

Migration of aluminum through copper plating

i have a problem with a power amplifier heat sink. the he30 aluminum material is conducting the heat away from the power amplifier area slowly. to avoid this we have plated the al with 10 microns of cu and topped that with 10 micron of tin. there is an improvement but nothing dramatic. so here are my questions:
1) any better way of conducting the heat away quickly.
2) I am told that the aluminum will migrate through the cu and destroy it eventually. is this correct.

Sunil Devanahalli
power amplifier research and development - INDIA
2006

Sorry! Finishing.com is temporarily Read-Only.
Ted Mooney is retiring but I have several offers to take it over.
We're working hard to make sure we find it the best new home.

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: