Investigation of the powder synthesis conditions for designing of color composites in the ZrO₂—Y₂O₃—СeO₂—Al₂O₃—CoO system

Abstract

The synthesis features of CoAl₂O₄ powder from the blend of cobalt nitrate Co(NO₃)₂∙6H₂O and the α-Al₂O₃ nanocrystalline powder were investigated. It is was found that CoA1₂O₄ began to form at 1000 °C and the process was completed after heat treatment at 1200 °C. The color of the powder varied from pastel blue to bright blue color. The investigation results will be used for microstructure design of color composites in the ZrO₂—Y₂O₃—СeO₂—Al₂O₃—CoO system.