Table 1: Different preparation methods and properties of silicon carbide.

MaterialsDensity (g/cm3)Free state of SiIsotropicCostPreparation cycleSurface modification

HP-SiC3.20NoBadHighShort termRequirement
RB-SiC3.04YesGoodLowShort termRequirement
S-SiC3.10NoWorseLowerLong termRequirement
CVD-SiC3.21NoBestHighLong termNonrequirement