Investigation of the Effect of Nanostructured Zirconium Dioxide on the Physical and Mechanical Properties of Carbonitride Zirconium Ceramics

Abstract The aim of this investigation was to research physical and mechanical properties a carbonitride zirconium ceramics with addition of nanoparticles zirconium dioxide which were sintered by hot pressing at a temperature of 2000°C, at a pressure of 30 MPa, with an exposure of 15 min. As a result of influence a zirconium dioxide has been achieved an increase a mechanical and physical properties of investigated ceramics. With this addition was achieved a maximum hardness among studied ceramics—2527 HV, observed a decrease in its density and porosity, as well as an increase in the elastic modulus to a value of 767 GPa. At the same time, the value of the critical stress intensity coefficient exceeded 6 MPa m1/2.