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Alodine in vacuum




 

I am looking at Alodining aluminum parts and putting them in UHV chambers. Will baking the chamber be an issue and will outgassing be an issue?

Glenn Jones
- Berkeley, CA, U.S.A.


Alodine is a trademark name for a chromate conversion coating. It is a gel, which will lose water upon baking, and will probably outgas in a vacuum.

tom & pooky   toms signature
Tom Pullizzi
Falls Township, Pennsylvania
 


Up to about 17% of the coating weight is water. The higher the bakeout, the more of this water that will be lost. Chemistry of the coating changes at 300 deg C, so stay lower.

Jordan spaulding
lockmart - sunnyvale, California




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