Zirconium diboride with sintering additives structure formation and mechanical properties

Abstract

The structure formation regularities and mechanical properties of ceramics based on zirconium boride at combined input of activating sintering additives of carbon, tungsten boride and zirconium, and tungsten silicide have been investigated. Mechanical properties with a range of strength properties of ceramics have been studied mainly by indentation method. The nature of ceramic properties differences obtained by vacuum hot pressing and by hot pressing in CO-CO₂ atmosphere, which comes to differences in the grain boundary strength materials formed and their defective state. The data obtained allow to optimize the manufacturing methods, composition and structure of the ceramic to provide necessary mechanical properties (compressive strength, tensile and flexural strength, hardness, fracture toughness). Full text download