Fabrication of ZnO ceramics using ZnO/Al2O3 nanocomposite particles prepared by mechanical treatment

Abstract

Nanocomposite particles of Al2O3-doped ZnO prepared by mechanical treatment were used for fabricating ZnO ceramics. TEM observations revealed that Al2O3 nanoparticles uniformly existed on a ZnO particle. The sintering body fabricated using the composite powder prepared by this mechanical treatment process had more uniform and finer microstructures than that fabricated using the powder mixture prepared by conventional wet mixing. The ZnO ceramics prepared by the mechanical treatment exhibited higher electrical conductivity than those prepared by the conventional wet ball milling process. © 2010 The Ceramic Society of Japan.