Effect of SiC Particle Size
The role of initial SiC particle size on the density is related to the RS duration. The use of micrometric SiC particles resulted in higher density at shorter times of RS, that is, 2 h (see Figures 1 and 4). Nevertheless, at a longer RS duration, nanometric SiC particles were yielded to the higher densification (Figures 4 and 6). In addition, lower porosity and unreacted phases can be obtained (Figures 5(b) and 7(a))