✦ LIBER ✦
Measurements of linear thermal expansion coefficients of copper SRM 736 and some commercially available coppers in the temperature range 20–300 K by means of an absolute interferometric dilatometer
✍ Scribed by M. Okaji; N. Yamada; H. Kato; K. Nara
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- English
- Weight
- 546 KB
- Volume
- 37
- Category
- Article
- ISSN
- 0011-2275
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✦ Synopsis
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-purity copper (99.999% purity), an oxygen-free high-conductivity copper and a tough-pitch copper, show good agreement with the NIST certified values and the CODATA recommended values within 0.09 x 1O-6 K-l over the whole temperature range.