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

-----

Hardcoat Anodize Surface Energy

I am trying to bond a hardcoat anodized aluminum part with a PC/ABS part and would like to know what the surface energy of hardcoat anodizing is. My guess is that it is a low surface energy finish but I'm not sure how low. I'd like to use an adhesive tape.

Justin Sheard
- Plymouth, MN, USA
2002

The surface energy of clean aluminum oxide is fairly low but varies considerably with impurities & chemicals adsorbed (note: adsorbed, not absorbed) on the surface. Clean and dry 6063 aluminum has a surface energy of about 90 dynes/cm2 and clean & dry polished aluminum oxide can be in the 20-30 range in dynes/cm2. As we all know, the surface energy figures vary from source to source & are dependent on temperatire & testing conditions--in other words, your mileage may vary.

Your best bet would be to test your product with a droplet procedure which measures contact angle.

Dale Woika
Surface Conversion Sciences - Bellefonte, Pennsylvania
2002

(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: