Abstract

Titanium carbide-based cermets with the addition of other carbides and with metal binders of nickel, iron and their alloys are used in mechanical engineering technology and instrumentmaking industry as wear-resistant and corrosion-resistant materials and coatings. The goal remains to increase the mechanical and functional properties of cermets, and for this research is being conducted aimed at optimizing the compositions and improving the technology for their manufacture. This report presents the results of a study of nonisothermal pressure sintering a powder mixture containing, in addition to titanium carbide TiC, mass fractions of carbides: 4% VC, 6% Mo₂C, 6% NbC, and 20% NiCr. Pressure sintering of powder mixtures was carried out on an induction heating unit made on the basis of a hydraulic press and a thyristor converter in an atmosphere formed as a result of the interaction of a graphite die with air. After preliminary slow heating, a sintering regime was established with a controlled heating rate of 15K/min under a constant pressure of 20MPa. The obtained experimental data on the current change in relative density and temperature in the process of cermet sintering showed a regular acceleration of its densification with increasing temperature.