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Heat capacity and thermal expansion of Zerodur and Zerodur M at low temperatures

✍ Scribed by S.J. Collocott; G.K. White

Publisher
Elsevier Science
Year
1991
Tongue
English
Weight
270 KB
Volume
31
Category
Article
ISSN
0011-2275

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✦ Synopsis

Measurements are reported of the thermal expansion, a, from 2 to 100 K and heat capacity from 1.5 to 20 K for a sample of Zerodur M and two samples of Zerodur for comparison. Zerodur M is a new glass-ceramic produced by Schott Glaswerke (Mainz), which has a near-zero thermal expansion coefficient at ambient temperature and improved dimensional stability on thermal cycling compared with the earlier Zerodur. The heat capacities of Zerodur M and Zerodur are shown to be similar to each other, whereas~the c~ values for Zerodur M are significantly different between 50 to 150 K compared with those for Zerodur.

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