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Sintering of cBN Based Materials with a TaC Binder for Cutting Tool Application

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Abstract

Ceramic matrix composites based on cubic boron nitride with a TaC binder phase are sintered under conditions of high pressure and high temperature. The sintering is carried out in a high-pressure apparatus of the toroid type in the temperature range of 1450–2450°C. It is shown that a chemical reaction between components of the mixture with the formation of TaB2 takes place at a sintering temperature above 2150°C. The microhardness of the composites increases with an increase in the sintering temperature and reaches a maximum value (34 GPa) at 2150°C. The composites show high resistance to mechanochemical wear when used for high-speed machining of nickel-based alloy Inconel 718.

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Funding

This study was performed within the Flintstone2020 project of the European Union’s Horizon 2020 Research and Innovation Program (grant no. 689279) and the Visby Scholarship from the Swedish Institute (grant no. 25946/2018).

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Authors and Affiliations

  1. Bakul Institute for Superhard Materials, National Academy of Sciences of Ukraine, 04074, Kyiv, Ukraine

    K. V. Slipchenko, D. A. Stratiichuk & V. Z. Turkevich

  2. Taras Shevchenko National University, 01601, Kyiv, Ukraine

    N. M. Belyavina

  3. Lund University, 221 00, Lund, Sweden

    V. M. Bushlya & J.-E. Ståhl

Authors
  1. K. V. Slipchenko
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  2. D. A. Stratiichuk
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  3. V. Z. Turkevich
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  4. N. M. Belyavina
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  5. V. M. Bushlya
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  6. J.-E. Ståhl
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Corresponding authors

Correspondence to K. V. Slipchenko or D. A. Stratiichuk.

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Translated by O. Kadkin

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Slipchenko, K.V., Stratiichuk, D.A., Turkevich, V.Z. et al. Sintering of cBN Based Materials with a TaC Binder for Cutting Tool Application. J. Superhard Mater. 42, 51–57 (2020). https://doi.org/10.3103/S1063457620020112

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  • DOI: https://doi.org/10.3103/S1063457620020112

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