Synthése du spinelle Mgal2o4 par réaction à létat solide

Abstract

MgAl2O4 Spinel is a technically very important ceramic material for its unique properties, but it is favored with wide commercial success due to the increase in production costs .In addition ,there is no natural source of magnesium aluminate for commercial extraction .As part of this work ,we synthesized by chemical reaction in the solid state .we chose three different sintering temperatures 1400,1500 and 1600 °C ,we also used two additives : Zinc Oxide ZnO and magnesium chloride MgCl2 with different contents 0.5% ,1%,1.5%,2% to help reduce the temperature of spinel formation and sintering .After processing the DRX results, it was deduced That the addition of ZnO or MgCl2 has a beneficial effect on lowering the temperature of the formation of the spinel phase form the starting mixture .thus ,sintering temperature 1600°C was taken as the optimum temperature for the formation of the spinel