ИСТИНА

The rapid development of modern industry requires designing new types of materials with enhanced perfor- mance characteristics, including structural ones. Currently, the use of technical ceramics in the industry allows us to open new possibilities in the application, which were considered impossible with the previous construc- tion materials. Due to its properties, technical ceramics is considered one of the unique materials here and now. Materials based on nitride and silicon carbide have a high operating temperature, high strength and wear- resistance. A set of such characteristics allows them to be used as a replacement for metal products in fields with extreme conditions. Due to its lightness and chemical inertness, materials based on non-oxide ceramics are also used in medicine, for instance, as implants in operations to immobilize adjacent vertebrae by spinal fusion. The covalent bond type of non-oxide ceramics creates many difficulties for obtaining dense ceramic products based on Si3N4 and SiC. One of the promising methods for obtaining dense ceramic products based on sili- con nitride and silicon carbide is reaction sintering. This method allows obtaining products with virtually no shrinkage in the sintering process, which has a positive effect on the technological process of making ceramic products. The main methods for producing dense materials based on nitride and silicon carbide (hot slip coating under pressure, isostatic pressing, etc.) do not allow obtaining products with a complex architecture, for example, with internal directional closed porosity of 100 microns. Modern methods of additive technologies will enable one to create products with a complex internal structure. This talk is aimed to touch the new approach to produce tailored shaped non-oxide ceramics utilizing carboth- ermal reduction of silica.