HETEROMODULE CERAMIC COMPOSITE MATERIAL AND METHOD FOR PRODUCTION THEREOF Russian patent published in 2020 - IPC C04B35/58 C04B35/645 B82Y40/00 

FIELD: chemistry.

SUBSTANCE: invention relates to production of high-strength, wear-resistant ceramic materials (composites) based on refractory compounds and can be used for production of parts of tribo nodes, including those operating under conditions of high extreme temperatures. Hetero-module ceramic composite material based on zirconium diboride contains boron nitride, silicon carbide and additionally - carbon inclusions in the form of multilayer nanotubes or pyrolytic carbon particles; zirconium carbide, or titanium carbide, or titanium nitride and aluminium oxide nanoparticles, with the following ratio of components, wt. %: boron nitride 3–5; silicon carbide 8–10; carbon inclusions in form of multilayer nanotubes or pyrolytic carbon particles 3–5; zirconium carbide, or titanium carbide, or titanium nitride 35–40; aluminium oxide nanoparticles 0.05–0.1; zirconium diboride is the rest. In the process of preparation of powder charge components boron nitride powder is subjected to high-energy mechanical activation. Powders were mixed in argon media, the preform is moulded and sintered under pressure of 20–25 MPa at temperature of 1800–2050 °C with an isothermal soaking for 10–45 minutes.

EFFECT: technical result of the invention is obtaining a ceramic composite with high strength and wear resistance characteristics.

7 cl, 5 ex