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Change in the electrical resistance of porous powder and fiber compacts during heating and compressive loading

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Abstract

The effect of heating at a constant rate in vacuum and compressive loading in the pressing direction on the electrical resistance of fiber compacts was investigated. Considerable decrease in electrical resistance occurred at 200–400°C. The significant effect of small compressive deformations on the electrical resistance of fiber compacts, and the absence of such in powder compacts, as well as a hysteresis in resistance occurring upon loading and unloading the fiber compacts, is explained by the nature of interparticle bonds. These are rigid in the powder compacts, and flexible-rigid in the fiber compacts.

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Authors
  1. V. N. Klimenko
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  2. A. G. Kostornov
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Additional information

Materials Science Institute, Ukrainian Academy of Sciences, Kiev. Translated from Poroshkovaya Metallurgiya, Nos. 11-12, pp. 34–38, November–December, 1997.

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Klimenko, V.N., Kostornov, A.G. Change in the electrical resistance of porous powder and fiber compacts during heating and compressive loading. Powder Metall Met Ceram 36, 595–598 (1997). https://doi.org/10.1007/BF02676145

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  • DOI: https://doi.org/10.1007/BF02676145

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