The increased use of graphites has led to the requirements for a graphitic thermal conductivity and diffusivity standard. Candidate graphites were screened on the basis of criteria such as reproducibility, isotropy, availability, and heating test results. Samples of two selected graphites -AXM-5Ql a
The thermal expansion of polycrystalline graphite
โ Scribed by G.M. Jenkins
- Publisher
- Elsevier Science
- Year
- 1964
- Tongue
- English
- Weight
- 632 KB
- Volume
- 13
- Category
- Article
- ISSN
- 0022-3115
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๐ SIMILAR VOLUMES
The length of polycrystalli~e graphite samples was measured as a function of temperature while cycling from 1000" to 24OO'C. A sample oriented perpendicular to the extrusion direction exhibited thermai expansion hysteresis for cycling to 2400" and 2200ยฐC but little or no hysteresis for cycling to 20
Measurements of thermal conductivity from 100 to 900ยฐK and electrical resistivity at 80ยฐK have been made on two mutually perpendicular directions of two types of anisotropic polycrystalline graphites and of two isotropic graphites of different densities. The thermal conductivity curves can be fitted
## ABSTRACTS were obtained that correspond to other carbon crystal forms. In addition, patterns are obtained that do not correspond to any of the known carbon allotropes. ## 61. Laser Raman studies on carbons M. Nakamizo and R. Kammereck (Department of Materials Sciences, Pennsylvania State lJni