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

K. V. Slipchenko, D. A. Stratiichuk, V. Z. Turkevich, N. M. Belyavina, V. M. Bushlya, J. E. Ståhl

Research output: Contribution to journalArticlepeer-review

Abstract

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.

Original languageEnglish
Pages (from-to)51-57
Number of pages7
JournalJournal of Superhard Materials
Volume42
Issue number2
DOIs
Publication statusPublished - 2020 Mar 1

Subject classification (UKÄ)

  • Mechanical Engineering
  • Materials Engineering

Free keywords

  • boron nitride
  • high pressure
  • microhardness
  • tantalum carbide

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