The most commonly used devices for low-temperature optical measurements are the cryostats with liquid nitrogen (ANZIN et al. ; DZHAFAROV et al. ; TSUKUDA). The main drawbacks of these cryostats are the long duration of cooling to the temperature of liquid nitrogen (LNT) and the difficulties encounte
A dilatometer for measuring the expansion of constructional materials in the temperature range 2 to 77 K
β Scribed by N.S. Petrenko; S.F. Kravchenko
- Publisher
- Elsevier Science
- Year
- 1973
- Tongue
- English
- Weight
- 277 KB
- Volume
- 13
- Category
- Article
- ISSN
- 0011-2275
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The temperature dependence of the linear expansion coefficients of Cr 18Ni10, Cr 18Ni15 and Cr 18Ni25 alloys has been studied in the temperature range 4.2 to 300 K. Using dilatometric curves the temperature range (195-60 K) of the martensitic transformation on cooling was determined for metastable C
## ACCURATE MEASUREMENTS of thermophysical properties of substances and also cahbration for precision thermometry require high stability in temperature control at any point in the range from 4 2 up to 300 K We describe below a temperature regulator for this range which has been tested over a long
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