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Why Gold Plate the HRS vacuum chamber?
To: Thomas Planche April 21, 2015
From: George Clark
cc: Jim Maloney
Re: Why Gold Plate the HRS vacuum chamber?
Why do you suggest we gold plate the inside of the HRS vacuum
chamber? Is it a space charge problem? Or are you worried about
the vacuum chamber outgassing?
If the concern is vacuum chamber outgassing then there are steps
that can be taken to make Aluminum better. Atlas Technologies in
Washington State specializes in Aluminum vacuum chambers. Their
passivation process replaces the thick porous oxide layers with a
quality thin and dense oxide surface.
I have talked with Dick Bothel at Atlas Technologies and it might
be possible to plate Aluminum with gold without the Nickel
layer...maybe using copper.
I recommend not using Nickel.