Thermodynamic analysis of dissociative volatilization of silicon carbide

Effect of SiC Particle Size on the Microstructural, Mechanical and Oxidation Properties of In-situ Synthesized HfB2-SiC Composites

“…Considering these ratios, dissociation of SiC was observed during the formation of composite. This result was also consistent with the literature, that silicon carbide did not melt when heated to elevated temperatures rather, it sublimates and/or dissociates under atmospheric pressure [37][38][39]. Another observation was the increasing of HfC (s) and B (g) contents at higher temperatures which could be explained by the replacement of carbon by boron in HfB 2 phase.…”

Improved additive manufacturing of silicon carbide parts via pressureless electric field‐assisted sintering

“…It is noteworthy that after sintering, the specimens also contained some porosity as seen in Figure 4C,D. This may be attributed to volatilization of SiC 33–36 or the reaction of SiC with Al 2 O 3 and Y 2 O 3 to form SiO 2 and gaseous phases 31 . It is possible that such porosity could be reduced by tuning the powder bed composition or making modifications to the sintering procedure, but further investigation is required to determine the optimal parameters.…”

“…31,32 It is noteworthy that after sintering, the specimens also contained some porosity as seen in Figure 4C,D. This may be attributed to volatilization of SiC [33][34][35][36] or the reaction of SiC with Al 2 O 3 and Y 2 O 3 to form F I G U R E 5 X-ray diffraction results from raw 3.5 μm SiC powder and a sintered SiC specimen. Symbols are placed above the peaks used to identify the α-SiC and YAP phases.…”