Precision measurements of small differences between linear expansion coefficients in the 4–80°K range
✍ Scribed by V. P. Popov; V. A. Pervakov
- Publisher
- Springer US
- Year
- 1978
- Tongue
- English
- Weight
- 208 KB
- Volume
- 21
- Category
- Article
- ISSN
- 0543-1972
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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
The thermal expansivities of several grades of copper were measured in the temperature range 20-300 K by means of an absolute laser interferometric dilatometer. The present results for copper standard reference material (NIST; SRM 736) and three commercially available kinds of copper, such as a high