The electrical and thermal conductivity of the MAX phase of Ti3AlC2 at low temperatures
G.Ya. Khadzhai1, R.V. Vovk1,2, Т.А. Prichna3, E.S. Gevorkyan2, M.V. Kislitsa2, and A.L. Solovjov4
1V.N. Karazin Kharkiv National University, 4 Svobody Sq., Kharkiv 61022, Ukraine
2Ukrainian Academy of Railway Transport 7 Feuerbach Sq., Kharkov 61050, Ukraine
3V.N. Bakul Institute for Superhard Materials, National Academy of Sciences of Ukraine 2 Avtozavodskaya Str., Kyiv 04074, Ukraine
4B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine 47 Nauky Ave., Kharkiv 61103, Ukraine
Received December 27, 2017
The electrical and thermal conductivity of the sample containing 96% of the MAX phase of Ti3AlC2 and 4% TiC was experimentally studied in the temperature range 15–300 K. The maximum thermal conductivity is ob-served at about 75 K. As the temperature increases, the fraction of phonon heat transfer decreases from ∼ 90% at low temperatures to ∼ 40% near room temperature.
PACS: 65.40.–b Thermal properties of crystalline solids;
Key words: MAX phase, electrical conductivity, thermal conductivity.
Published online: March 27, 2018