Influence of Minor Additions and Calcination Temperature of Beryllia on Powder Properties

Influence of minor additions of MgO, TiO2 and Fe2O2 on BeO powders prepared by calcination of the hydroxide has been studied. Minor additions have no significant influence on the decomposition characteristics of beryllium hydroxide. Depending on the temperature of calcination, the minor additions have varying degree of influence on surface area, crystallite size, particle size and particle morphology. Reduction in surface area and increase in crystallite size with increase in calcination temperature were dependent on the type of the additive present. The crystallite size and particle size were of the same order of magnitude at lower calcination temperature. With increase in calcination temperature the particle growth was much more than the crystallite growth.