Fizika Nizkikh Temperatur: Volume 44, Number 5 (May 2018), p. 589-591    ( to contents , go back )

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
E-mail: rvvovk2017@gmail.com; gkhadjai@univer.Kharkov.ua

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

Abstract

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;
PACS: 72.80.–r Conductivity of specific materials;
PACS: 84.37.+q Measurements in electric variables (including voltage, current, resistance, capacitance, inductance, impedance, and admittance, etc.).

Key words: MAX phase, electrical conductivity, thermal conductivity.

Published online: March 27, 2018

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