Sinterability studies on various BeO powders - a second report

Abstract

Six sulphate-derived beryllium oxide powders have been studied and a comparison made of their powder properties and sintering behaviour. Powders containing segregated impurities showed irregular grain growth and those with strongly bonded aggregates showed internal cracking during sintering. All powders sintered less readily in hydrogen than in nitrogen. Semi-empirical equations are presented relating sintering temperature and the grain size at any sintered density to the powder surface area and the green density of the pressed compact.