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Is there any relationship between thickness of anodized film and hardness of the film?



(-----) 2006

I want to know how to measure the hardness of anodized film as well as relationship between film thickness and hardness

Ashish Kumar Gupta
Defence R&D Orgnisation - Bangalore, India

Editor's reminder: Inquirers should please try to explain their own situation rather than posting in the abstract; and to try to make the inquiries as well as the responses interesting & informative to the reader. This forum is sort of a technical "Dear Abby" column, not a consulting service. Thanks!


2006

A cut section mounted and polished and then the use of a microhardness tester. The cut and polish is a lot more difficult than it sounds for good work. Thickness has nothing to do with hardness. The closeness of the individual cells controls that (anodizing temperature). Note that you do have to have a thick enough coat to not have the edges fracture during the test.

James Watts
- Navarre, Florida
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