Temperature dependence of TiN/TiAl3/Ti2AlN composite material electric resistivity
https://doi.org/10.17073/1997-308X-2019-3-36-41
Abstract
The TiN/TiAl3/Ti2AlN composite material was obtained by filtration combustion of the porous TiAl intermetallic samples in gaseous nitrogen. X-ray phase analysis of combustion products provided data to calculate the weight content of each phase as follows: 42 wt.% TiN, 35 wt.% TiAl3, 20 wt.% Ti2AlN and 3 wt.% TiAl. The synthesized composite material containing Ti2AlN МАХ phase features good electrical conductivity of a metallic nature. Specific electrical resistance of the synthesized material was measured by a standard 4-point procedure at constant current in the temperature range 300–1300 K in vacuum 2·10–3 Pa. It was found that specific electrical resistance grows linearly from 0.35 to 1.25 μΩ·m as temperature rises. Subsequent measurements of this indicator at the following heating/cooling cycles demonstrated full agreement of obtained results. This fact indicates that the material has stable electrophysical properties in the investigated temperature range.
About the Authors
A. A. Kondakov
Merzhanov Institute of Structural Macrokinetics and Materials Science (ISMAN), Russian Academy of Sciences
Russian Federation
Russian Federation
Research assistant, Laboratory of мacrokinetics of SHS in peactors
142432, Moscow reg., Chernogolovka, Academician Osipyan str., 8
A. V. Karpov
Merzhanov Institute of Structural Macrokinetics and Materials Science (ISMAN), Russian Academy of Sciences
Russian Federation
Research scientist, Materials science laboratory
Russian Federation
Research scientist, Materials science laboratory
V. V. Grachev
Merzhanov Institute of Structural Macrokinetics and Materials Science (ISMAN), Russian Academy of Sciences
Russian Federation
Cand. Sci. (Phys.-Math.), Deputy director for scientific work
Russian Federation
Cand. Sci. (Phys.-Math.), Deputy director for scientific work
A. E. Sytschev
Merzhanov Institute of Structural Macrokinetics and Materials Science (ISMAN), Russian Academy of Sciences
Russian Federation
Cand. Sci. (Tech.), Leading researcher, Head of Material science laboratory
Russian Federation
Cand. Sci. (Tech.), Leading researcher, Head of Material science laboratory
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Review
For citations:
Kondakov A.A., Karpov A.V., Grachev V.V., Sytschev A.E. Temperature dependence of TiN/TiAl3/Ti2AlN composite material electric resistivity. Powder Metallurgy аnd Functional Coatings (Izvestiya Vuzov. Poroshkovaya Metallurgiya i Funktsional'nye Pokrytiya). 2019;(3):36-41. (In Russ.) https://doi.org/10.17073/1997-308X-2019-3-36-41
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