Formation of Nanoscale (Ti,V)N Solid Solutions form Equimolar TiN/VN Blend at Mechanical Alloying or HPHT Sintering

Abstract

The comparative study of TiN and VN interaction at mechanical alloying (MA) of the equimolar TiN-VN mixture in a ball mill and after high pressure, high temperature (HPHT) sintering of the cBN-TiN-VN charge, which contains 35 vol.% of this mixture, is presented. MA for five hours or HPHT sintering at 2000–2300 °C results in the formation of TixV1−xNy and VxTi1−xNy solid solutions containing 8–10 at.% of vanadium or titanium. Preliminary processing of the initial powder mixture in a ball mill promotes the occurrence of solid-state reactions during HPHT sintering of composites and influences their physical characteristics.

Keywords

• nitride
• nanocomposite
• mechanical alloying
• sintering
• X-ray diffraction
• crystal structure