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EXACT VOLTAGE BREAKDOWN (PER MIL) FOR HARD ANODIZE TYPE 3

2006

HI
I WOULD LIKE TO KNOW THE BREAK DOWN VOLTAGE OF HARD ANODIZE TYPE 3 COATING. I DESIGNED AN ALUMINUM DISK (6061) AND WANT TO KNOW THE BREAK DOWN VOLTAGE OF A 20 MICRONS COATING (0.787 MIL).
ANOTHER QUESTION THAT I WOULD LIKE TO ASK IS IF THE SURFACE ON THE COATING WILL BE CAPABLE OF HOLDING epoxy glue ⇦ this on eBay or Amazon [affil links] . MEANING THERE IS AN ASSEMBLY ON THE ALUMINUM DISK THAT IS GLUED DOWN TO IT, AND I WOULD LIKE TO KNOW IF THE GLUE WON'T FALL APART FROM THE ANODIZED SURFACE.

THANKS FOR ANY KIND OF HELP

BOAZ

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2006

Your word "exact" does not consider all the variables of the testing method. Sheasby and Pinner in "The Surface Treatment and Finishing of Aluminum Alloys",6th Edition, Volume 2, Page 970 and 1059 address breakdown voltage extensively. The details are too many to abbreviate here. The book is available from finishing.com.

Robert H Probert
Robert H Probert Technical Services

Garner, North Carolina

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2006

Normally without difficulty you could get Voltage Break down at 600v/mil. My customer usually require 800V/mil, some even 1000V/mil.

I think you could glue on the coating area as long as it is not sealed.

John Hu