SPS parameters influence on Ti3SiC2 formation from Si/TiC: Mechanical properties of the bulk materials

摘要

This paper reports on Ti3SiC2 formation, from 2Si/3TiC starting powders, using spark plasma sintering as a reactive process within the temperature range of 1250-1400 degrees C and for different holding times. The microstructure and mechanical properties of the bulk materials were studied as a function of temperature and holding time under a constant pressure of 60 MPa. The highest Ti3SiC2 conversion (87 wt%) was achieved for a temperature of 1400 degrees C during 20 min. At these optimum conditions, the relative density was higher than 99%. The Young's modulus, the Vickers hardness and the compressive yield strength of the corresponding sample were: 325 GPa, 4.9 GPa and 995 MPa, respectively. (C) 2017 Elsevier B. V. All rights reserved.