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Investigation of the Mechanisms of Compaction of CoSb3 Skutterudite Nanopowders under Field-Activated Sintering

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Abstract

We calculated the compaction parameters of CoSb3 thermoelectric powders under field-activated sintering. The values of the creep activation energy, sensitivity to the strain rate, and the complex parameter of the material characterizing the state are obtained. The compaction of the powders is due to the mechanisms of grain sliding in the sample. We performed the computer simulation of the sintering process by the finite element method. The change in the dimensions of the sample is calculated using the creep deformation model. The simulation results correspond to the experimental data.

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Funding

This work was supported by the Russian Foundation for Basic Research, project no. 18-38-00371 (computer simulation). The experimental study was supported by the Russian Science Foundation, project no. 19-79-10282. V. Khovailo is grateful for the support under contract no. 02.A03.21.0011 within the framework of Russian Governmental Resolution no. 211.

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Authors and Affiliations

  1. St. Petersburg University of Information Technologies, Mechanics, and Optics (ITMO University), 197101, St. Petersburg, Russia

    A. S. Tukmakova, D. B. Shcheglova & A. V. Novotelnova

  2. National University of Science and Technology “MISiS”, 119049, Moscow, Russia

    A. P. Novitskii, A. I. Voronin & V. V. Khovailo

  3. South Ural State University, 454080, Chelyabinsk, Russia

    V. V. Khovailo

Authors
  1. A. S. Tukmakova
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  2. D. B. Shcheglova
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  3. A. P. Novitskii
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  4. A. I. Voronin
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  5. V. V. Khovailo
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  6. A. V. Novotelnova
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Corresponding author

Correspondence to A. S. Tukmakova.

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Translated by O. Zhukova

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Tukmakova, A.S., Shcheglova, D.B., Novitskii, A.P. et al. Investigation of the Mechanisms of Compaction of CoSb3 Skutterudite Nanopowders under Field-Activated Sintering. Tech. Phys. Lett. 46, 931–934 (2020). https://doi.org/10.1134/S1063785020090308

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  • DOI: https://doi.org/10.1134/S1063785020090308

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