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A Noncontact Method for Measuring the Specific Electrical Resistance of Metals in the High-Temperature Region

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Abstract

An extremely simple noncontact method for measuring the resistivity of metals at high temperatures is proposed. The essence of this method is to measure the electromotive force induced by a high-frequency electromagnetic field in two circular circuits of different diameters, which are placed coaxially in the middle of a cylindrical sample. The results of measuring the resistivity of molybdenum in the range of 1170–2070 K using contact and noncontact methods coincide within ±1%, thus making it possible to recommend the proposed method as efficient and preferable, especially in the high-temperature region. A technique for processing the experimental results is described and recommendations on the optimal geometries of the circuits and sample are given to improve the accuracy of measurements.

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Authors and Affiliations

  1. Immanuel Kant Baltic Federal University, 236041, Kaliningrad, Russia

    A. V. Rumyantsev, M. A. Nikishin & V. G. Kharyukov

Authors
  1. A. V. Rumyantsev
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  2. M. A. Nikishin
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  3. V. G. Kharyukov
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Correspondence to A. V. Rumyantsev.

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Translated by A. Seferov

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Rumyantsev, A.V., Nikishin, M.A. & Kharyukov, V.G. A Noncontact Method for Measuring the Specific Electrical Resistance of Metals in the High-Temperature Region. Instrum Exp Tech 62, 444–449 (2019). https://doi.org/10.1134/S0020441219030096

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  • DOI: https://doi.org/10.1134/S0020441219030096

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