Aluminum Nitride Synthesized by Reduction and Nitridation of Alumina

Abstract

AlN powders were synthesized from high pure Al2O3 with reducing agent of high pure carbon in azotic atmosphere. Obtained powders were adequately pure in metalic impurities when the nitriding processes were proceeded in high temperature such as above 1800°C.Oxygen in the powders were measured by the fast neutron activation analysis. These powders contained 1.5-7.2wt% of oxygen. The impurity oxygen contents which greatly influenced upon the properties of the powders could be regulated by the temperature of the synthesizing reaction.