STRUCTURE AND PROPERTIES OF PCBN COMPOSITES OF THE CBN-TIN SYSTEM, OBTAINED IN A CUBIC HIGH-PRESSURE APPARATUS

  • Mykola Bezhenar V. N. Bakul Institute for Superhard Materials of National Academy of Sciences of Ukraine
  • Oleksandr Sokolov V. N. Bakul Institute for Superhard Materials of National Academy of Sciences of Ukraine
  • Andrii Patsyk V. N. Bakul Institute for Superhard Materials of National Academy of Sciences of Ukraine
  • Ярослав Романенко Інститут надтвердих матеріалів ім. В.М. Бакуля Національної академії наук України

Abstract

The results of a study on the structure and properties of superhard PCBN composites, obtained by sintering in a cubic high-pressure apparatus from a mixture of cBN-TiN and cBN-TiN-Al, are presented. The sintering temperature was 1750 K, and the pressure was 5 GPa. The research focused on microstructure, phase and elemental composition, hardness (measured by Knoop and Vickers methods), and fracture toughness, determined by Vickers pyramid indentation.

Published
2025-04-11
Issue
Vol 27 No 1 (2024): Tooling materials science
Section
Instrumental, structural and functional materials based on diamond and cubic bor