Good point John - then we can justify the $5,000 screwdriver.

Gregg


From: [email protected]
[mailto:[email protected]]On Behalf Of John Woodgate
Sent: Friday, January 31, 2003 10:35 AM
To: [email protected]
Subject: Re: BeCu problem


I read in !emc-pstc that Fred Townsend <[email protected]> wrote (in
<[email protected]>) about 'BeCu problem' on Fri, 31 Jan
2003:
>BeO has seven times better thermal conductivity than AlO (alumina).  There
is
>no real substitute for BeO at high power levels.  It is still used by the
>Military in high power radar applications such as tubes.

Vapour Phase Deposition of diamond may replace BeO, with improved
thermal properties, AIUI, and no toxicity problem.
--
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
Interested in professional sound reinforcement and distribution? Then go to
http://www.isce.org.uk
PLEASE do NOT copy news posts to me by E-MAIL!


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