The effect of heat-treatment on the thermal diffusivity of an aluminosilicate fiber-reinforced carbon matrix was measured by the laser-flash method while the specimen was being heat treated. A permanent increase in thermal diffusivity was observed, which was attributed to the combined effects of str
43. The effect of heat treatment on the thermal properties of permeable cellulose carbon
โ Scribed by H.D Blakelock; C Arno
- Publisher
- Elsevier Science
- Year
- 1964
- Tongue
- English
- Weight
- 131 KB
- Volume
- 1
- Category
- Article
- ISSN
- 0008-6223
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๐ SIMILAR VOLUMES
Carbon-carbon composites have been prepared with and without addition of 15 wt% of the glass-forming oxidation inhibitors boron and zirconium diboride. Samples of the composites carbonised at 850ยฐC were further heat treated over a range of heat-treatment temperatures to 2650ยฐC. Mechanical properties
kz and permit determination of the activation energy (22 kcal) for step 2. Together with the activation energy (52 kcal) for step 1, one obtains 32 kcal as the heat of dissociation of the C-C bond in CsOz at 1000ยฐK. This figure, which at first seems surprisingly low, leads to a reasonable value (f51