HOME FAQs BOOKS JOBS: Help Wanted Suggestions you are here: Hotline/Forum => Letter 43016

Why is anodised coating on aluminum porous

++++++

It is said that anodic coating is a kind of porous coating. what is the source of this porosity?I mean what are the agents which cause this porosity.

Muhammad Bashir
GIKI - Pakistan

++++++

The solution that the piece is anodized in - typically sulfuric acid - dissolves the coating while it is being applied. The result is a thicker and more porous coating than would otherwise be possible.

Jim Gorsich
Accurate Anodizing Inc.

Compton, California, USA

ANSWER or FOLLOW UP POST an unrelated QUESTION HOT Topics

Disclaimer: It is not possible to 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; some names may be fictitious and some recommendations may be deliberately harmful.

If you are seeking a product or service related to metal finishing, please check these Directories: