hard anodized aluminum in high-vacuum?
hard anodized aluminum in high-vacuum?
(OP)
I am trying to use a linear guide for a door in a vacuum chamber. It is aluminum with a clear hard anodize surface. The pressure of the chamber will be 3x10-5 Torr and Temp. will be 150F. I was told not to use anodized aluminum because of its porosity but it doesn't make much sense to me. I believe the guide should be fine in the chamber. Any comments?





RE: hard anodized aluminum in high-vacuum?
RE: hard anodized aluminum in high-vacuum?
Anodic and chemical treatments tend to "mess up" the native surface of the aluminum at the molecular level. This tends to create more sites for trapping atmospheric gases thereby making it harder to pump down and potentially resulting in more outgassing.
TTFN
RE: hard anodized aluminum in high-vacuum?
RE: hard anodized aluminum in high-vacuum?
RE: hard anodized aluminum in high-vacuum?
RE: hard anodized aluminum in high-vacuum?