The effect of metallic carbides (chromium and vanadium carbide) as additives for boron carbide sintering and the particle size distribution were analyzed in this study. Carbon was also used as standard additive. Particle size was changed by high energy milling, using planetary mill for two and four hours. The as received and the two hours milled were hot pressed at 1800℃, pressure of 20 MPa and argon atmosphere, with additives. The densities of sintered samples varied form 80% to 99% to as received and two hours milled powder, respectively. The analysis showed the presence of new phases at the grain boundary for the two hours milled powder, which kept the grain size small during the sintering process.
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