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 TVT, 2018, Volume 56, Issue 4, Pages 543–547 (Mi tvt10866)

Thermophysical Properties of Materials

Electrically conducting ceramics based on $Al$–$\rm AlN$$\rm TiB_2 A. V. Karpov, D. Yu. Kovalev, I. P. Borovinskaya, A. E. Sytschev Institute of Structural Macrokinetics and Materials Science, Russian Academy of Sciences Abstract: The high-temperature conductivity of ceramics based on Al–\rm AlN$$\rm TiB_2$ obtained by self-propagating high-temperature synthesis has been studied. The dependences of DC resistivity were measured in vacuum ($1$ Pa) by a four-point technique in a temperature range of $293$$1273 K. The evolution of the phase composition of the material upon heating was studied by time-resolved diffraction in real-time mode. The measurements show a “metallic” behavior of conductivity when the \rm Al$$\rm AlN$$\rm TiB_2 composite is heated, and there is also an abrupt change of resistivity in a temperature range of 870$$970$ K that is linked with Al melting. In this case, the crystalline structure of ceramic phases does not undergo changes in the studied temperature range. The same temperature coefficient of resistance has been observed for all studied compositions up to the melting point of aluminum.
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DOI: https://doi.org/10.31857/S004036440002716-1

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English version:
High Temperature, 2018, 56:4, 527–531

Bibliographic databases:

UDC: 537.311.3; 621.315.5
Accepted:28.06.2017

Citation: A. V. Karpov, D. Yu. Kovalev, I. P. Borovinskaya, A. E. Sytschev, “Electrically conducting ceramics based on $Al$–$\rm AlN$$\rm TiB_2$”, TVT, 56:4 (2018), 543–547; High Temperature, 56:4 (2018), 527–531

Citation in format AMSBIB
\Bibitem{KarKovBor18}
\by A.~V.~Karpov, D.~Yu.~Kovalev, I.~P.~Borovinskaya, A.~E.~Sytschev
\paper Electrically conducting ceramics based on $\rm Al$--$\rm AlN$--$\rm TiB_2$
\jour TVT
\yr 2018
\vol 56
\issue 4
\pages 543--547
\mathnet{http://mi.mathnet.ru/tvt10866}
\crossref{https://doi.org/10.31857/S004036440002716-1}
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\transl
\jour High Temperature
\yr 2018
\vol 56
\issue 4
\pages 527--531
\crossref{https://doi.org/10.1134/S0018151X18040089}
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