Thermal expansion of silica at low temperatures
โ Scribed by G.K. White
- Publisher
- Elsevier Science
- Year
- 1964
- Tongue
- English
- Weight
- 493 KB
- Volume
- 4
- Category
- Article
- ISSN
- 0011-2275
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๐ SIMILAR VOLUMES
VANADIUM, niobium, and tantalum are three transition elements with relatively large electronic specific heats; they are also supercondfictors. Interest in their low temperature expansion properties, therefore, lies in the fact that not only should useful information be obtained about their lattice d
Linear expansion coefficients have been measured for Cr, Mo and W from 2-30 K, 55-90 K, and near room temperature. At low temperatures, the lattice contributions for Mo and W, although small, are determined to better than 10% giving respective limiting values of the lattice GriJneisen parameter, 3'o
The linear thermal expansion coefficient, a, has been measured from 2 to 32 K and from 55 to 90 K for a machineable glass-ceramic, an "ultra-low expansion" titanium silicate glass (Coming ULE), and ceramic glasses (Cer-Vit and Zerodur), and for glassy carbon, a is negative for the ultra-low expansio