Development of technology for producing high-density ceramics based on Zr0.85(Y, Ce, Ca, Mg)0.15O2 nanoparticles with a high proportion of nanosized grains

Abstract

In this study, we developed a technology for producing high-density ceramics based on Zr_0.85(Y, Ce, Ca, Mg)_0.15O₂ nanoparticles by implementing a grain boundary diffusion densification mechanism. It was found that standard sintering at 1500 °C leads to an excessive increase in the average grain size to 1–5 μm and microstructural heterogeneity. At the same time, implementing the grain boundary diffusion densification mechanism using low-temperature sintering at temperatures of 1100–1200 °C leads to the formation of high-density (~98–92% of the theoretical density) ceramics with a high proportion of nanosized grains (up to 64%).