Activated sintering of ceramics on the basis of Al[2]O[3]

Abstract

Ceramic sintering on the basis of Al2O3 activated by nanopowder additives Al[2]O[3] and Al has been studied. The given paper shows that adding nanopowder Al[2]O[3] in the amount of up to 20 wt. % into the coarse powder [alpha]-Al[2]O[3] activates the sintering process and, as a result, leads to the increase in density and microhardness of sintered alumina ceramics. The study has revealed a significant effect of alumina ceramic density growth which is due to introducing the submicron powder TiO[2] to the initial blends composition.