“…The rapid increase in compressive strength also indicated that, when the sintering temperature was higher than 1450 °C, the liquid phase formed by the sintering aid facilitated the sintering process, whereby the SiC ceramic particles changed from their original loosely packed state and became tightly bound to each other. The mechanical properties of the porous SiC ceramics were also compared with those of other reported porous ceramics, as shown in Figure 11 [ 23 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 , 56 , 57 , 58 ]. It was demonstrated that the porosity and compressive strength of the porous SiC ceramics prepared by different methods differed widely, and the compressive strength decreased with the increase in porosity.…”