[ATM] ALON optical ceramic
Paul A. Valleli
valleli at rcn.com
Sat Jan 21 07:51:35 JST 2012
ALON has been used for defense applications for many
years as a substitute for Sapphire, which has tricky
transmission/polarization problems .
Both minimize the problem of sandblasting during
desert operations and high speed rain erosion.
Right now there are size limitations but I expect
that issue will go away - just a matter of $$$$ -
same for Sapphire.
I have never heard of it being referred to as a
'ceramic'. The bulk material is optically clear.
I expect that we will soon see similar applications
with Synthetic Diamond.
---- Original message ----
Date: Thu, 19 Jan 2012 10:06:01 -0500
From: William Lee <wjl12 at comcast.net>
Subject: [ATM] ALON optical ceramic
To: "atm at atmlist.net List" <atm at atmlist.net>
>I just saw ALON (Aluminum Oxy Nitride) on the
fascinating stuff, a powder that can be molded,
then heated. It comes out hazy and has to be
physically polished. But according to the spec
shows it's stiffer than beryllium and almost as
hard as silicon carbide. Good transparency from
near-UV to IR. But expensive.>>Has anyone ever
heard of this? Or used this professionally? (Hint,
mailing list http://www.atmlist.net/
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