The Influence of Manganese Oxide on the Sintering and Properties of the Eutectic Ceramics of the ZrO2–Al2O3–SiO2 System

Abstract

The sintering, microstructure, and phase composition of the eutectic ceramics of the ZrO₂–Al₂O₃–SiO₂ system with an MnO additive have been studied. It has been shown that the additive contributes to the decrease in the sintering temperature to 1250–1350°С. The synthesized materials have a high content of the tetragonal phase, a fine crystalline structure with a grain size of 100–600 nm, and high flexural strength up to 420 MPa. The developed low-temperature materials can find application in mechanical engineering as high-temperature machine parts and refractory materials.