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Investigation of the thermal conductivity of SiC-BeO ceramics at high pressures and temperatures |
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| Authors: | S. N. Emirov G. G. Gadzhiev E. N. Ramazanova Z. Z. Abdulagatova E. M. Magomedmirzoev |
| Affiliation: | (1) Institute of Geothermometry Problems, Dagestan Scientific Center, Russian Academy of Sciences, Makhachkala, Russia;(2) Institute of Physics, Dagestan Scientific Center, Russian Academy of Sciences, Makhachkala, Russia |
| Abstract: | We present the results of our experimental studies of the thermal conductivity for SiC and SiC + 1.2% BeO ceramic samples as a function of the hydrostatic pressure up to 400 MPa in the temperature range 273–523 K. We show that pressure leads to a nonlinear increase in thermal conductivity and to an additional phonon scattering by lattice defects. |
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