Methods of Forming Geometrically Complex Manufactured Products from Silicon-Carbide Based, Heat-Resistant, Ceramic Materials

The possibility of producing geometrically complex mechanical-engineering products based on reaction-sintered silicon carbide using two methods was investigated — mechanical processing of polymerized workpieces before sintering and molding by hot slip casting under pressure. The resulting silicon carbide ceramic materials are characterized by low density of the order of 3.04 – 3.07 g/cm 3 , porosity ≤ 1%, and bending strength 320 – 360 MPa. Materials based on silicon carbide modified with boron carbide have density 2.72 g/cm 3 , porosity about 1%, and bending strength of 280 MPa.