Investigation of the Physical and Mechanical Properties of Silicon Carbide Prepared on an Industrial Scale

In this study, an industrial polycrystalline SiC tile was successfully sintered by pressureless sintering at 2150°C for 1 hour. The physical and mechanical properties of silicon carbide including density, hardness, bending strength, and fracture toughness were evaluated. The results indicated that the mentioned properties were 3.08 g.cm-3, 2503 HV0, 249.3 MPa, and 1.23 MPam0.5, respectively. The mechanical properties of samples showed that strength, hardness, and fracture toughness were low, indicating samples are inappropriate for industrial applications. It seems that the use of pressure-assisted sintering such as spark plasma sintering or sintering with the use of sintering aid materials such as alumina and yttrium oxide in the structure of the specimen, will improve the physical and mechanical properties of the sample.