A common process is using Induction Heating with graphite crucibles,
From wikipedia...
"Induction heating is often used to heat graphite crucibles (containing
other materials) and is used extensively in the semiconductor industry
for the heating of silicon and other semiconductors."
I believe that this is still a very risky way to heat a precious RF tube
just to help gettering. Bombarding the anode and grid with beam (while
staying within allowable dissipations) is straight forward. Or just
using the tubes as the OEM intended and allow the getter to work via
normal operation of the tube.
73
John
K5PRO
Message: 1
Date: Thu, 16 Jun 2016 17:11:38 +0100
From: Alan Ibbetson <alan@g3xaq.net>
To: amps@contesting.com
Subject: Re: [Amps] Thinking out loud 3-500Z and the like gettering
Message-ID: <b5d412be-8eef-0809-b729-4046c5e45914@g3xaq.net>
Content-Type: text/plain; charset=windows-1252; format=flowed
It looks to me like they won't heat the graphite anodes in the modern
day 3-500Z and similar tubes. They would have to be the metal type
anodes for the induction heater to work.
This video suggests differently
https://www.youtube.com/watch?v=fXsIbJG-r0U
73, Alan G3XAQ
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