Abstract
The resistivity of hafnium carbide in the temperature range of 2000–5000 K has been measured via current-pulse heating (for several microseconds). Data on the liquid phase have been obtained for the first time. The resistivity was calculated for sample sizes at room temperature (thermal expansion was neglected). A comparative investigation of the resistivities (measured with the same method) of the refractory carbides ZrC, HfC, and TaC + HfC has been performed in a wide temperature range (2000–5000 K). The dependences of the resistivity on temperature and heating energy for the samples obtained via spark plasma sintering and magnetron sputtering are compared.
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