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

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

-----

Corrosion in electrolytic capacitors.

I'm a Swedish chemistry student and I have a couple of questions about electrolytic capacitors. I¥m currently working with a project for a capacitor company here in Sweden. They have problems with corrosion on the anodic foil in their high voltage (500 V) capacitors. Phosphoric acid and ethylene glycol is used among other "parts" in the electrolyte. Further investigations has shown that there in some cases also occurs sparks through the oxide layer. Well, if someone have some tips about this topic, please let me know.

Stefan Johansson
- Sweden
2000

Stefan, It is difficult to assess the problem without more information. Specifically, what are the anodic foils made out of? What is the cathode material?

Jim Treglio - scwineryreview.com
PVD Consultant & Wine Lover - San Diego,
California
2000

The evidence of sparks could indicate possibility of excessive charge on the surface that has no place to go during processing.

Mandar Sunthankar
- Fort Collins, Colorado
2000

(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: