PECULIAQRITIES OF THE DIRECTED GROWTH OF SINGLE CRYSTALS DIAMOND IN THE Fe-Ni-Zn-C SYSTEM

  • Sergii Hordieiev V. N. Bakul Institute for Superhard Materials of National Academy of Sciences of Ukraine
  • Valentin Lisakovskiy V.M. Bakul Institute for Superhard Materials National Academy of Sciences of Ukraine
  • Viacheslav Klochok V.M. Bakul Institute for Superhard Materials National Academy of Sciences of Ukraine
  • Andrew Бурченя V.M. Bakul Institute for Superhard Materials National Academy of Sciences of Ukraine
  • Tomash Sakal V.M. Bakul Institute for Superhard Materials National Academy of Sciences of Ukraine
Keywords: single crystal of diamond, additives, habitu, Fe-Ni-Zn-C, defects, octahedron, growth

Abstract

Were studied the growth process peculiarities of single crystal diamond type Ib in solution-melt system Fe-Ni-Zn-C by the method of temperature gradient in high-pressure devices of the “toroid” type DO 044 at a pressure of 6 GPa and temperature of 1400 ºС. Used Zn additives in the carbon source at diamond cultivation in the range from 5 to 30 mass % allowed to receive structurally perfect single crystals weighing up to 3.65 ct. It is established that with an increase in the alloying additive Zn, an increase in mass is observed with the growth rates of diamond single crystals up to 8-9 mg/h.

Published
2023-08-23
Issue
Vol 25 No 1 (2022): Tooling marerials science
Section
Instrumental, structural and functional materials based on diamond and cubic bor