>
>Ian Roberts wrote:
>>It should have been obvious what I was trying to say. The pure form of
>>BeO IS white, but the manufacturers have licence to make it any colour
>>that they please, from white to black, depending on what mix of
>>"alumina", "silica", and "beryllia" and other compounds they choose to
>>incorporate in the mix
>>An amateur who assumes it has to be pure white to be BeO, such as
>>urself, apparently, could be in for a nasty....
>
>That isn't what I said at all! I said that the pink colour has NO
>CONNECTION with any beryllia content, so the colour is totally useless
>as an indication.
? Amen. Ceramic insulation in ceramic/metal tubes is silver-soldered to
the metal parts. The pink colour is from a bit of Manganese that is
added to improve the wetablility of the ceramic RCA and Svetlana were
two tube manufacturers who used manganese.
>
>
cheers, Ian
- Rich..., 805.386.3734, www.vcnet.com/measures.
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