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

-----

Inhibitors for sulfuric acid anodizing

Dear Sirs:
I am currently working on anodizing diecast aluminum, LM5 or Al-Mg alloy, parts. Known from The Surface Treatment & Finishing of Aluminum and its Alloys by S. Wernick, R. Pinner, P.G. Sheasby that different metallic compounds' solubilities in aluminum alloy matrix are different in sulfuric acid during anodic process, so inhibitor should be used or else the texture outcome will be unsatisfied.

I would like to know what inhibitor or any brand name type is available in the market.

Thank you!
Best regards,

Wang W [surname deleted for privacy by Editor]
National Cheng Kung University - Taiwan
1996

Hi, Wang. The book you referenced describes additions of oxalic acid, glycolic acid and some other materials. Any of the companies selling anodizing processes and technology can offer proprietary additives. Good luck.

Regards,

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
Need quick confidential answers? $25
Need project assistance? $100/hr.

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: