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- From: rbradley@polaris.cv.nrao.edu (Richard Bradley)
- Newsgroups: sci.materials
- Subject: Re: Insulator with good heat conductivity
- Message-ID: <RBRADLEY.92Jul28093359@polaris.cv.nrao.edu>
- Date: 28 Jul 92 14:33:59 GMT
- References: <7926@dirac.physics.purdue.edu>
- Sender: news@nrao.edu
- Distribution: na
- Organization: National Radio Astronomy Observatory
- Lines: 7
- In-Reply-To: parks@gibbs.physics.purdue.edu's message of 27 Jul 92 22: 01:10 GMT
-
- Crystalline quartz is a good electrical insulator and a good thermal
- conductor at cryogenic temperatures. Its thermal expansion coef. matches
- that of copper so it will not crack upon cooling. It is relatively
- inexpensive and is available from a number of companies. We use it
- as a thermal strap for the center conductor of microwave coaxial cable.
-
- Hope this helps.
-