Abstract
X-ray line profile analysis of magnesia powders derived from three parent compounds—hydroxide, carbonate and oxalate—at various calcination temperatures ranging between 400° and 1200°C was carried out using Warren and Averbach's method to evaluate strain and effective domain size. The percentage degree of crystallinity was calculated using crystallinity index method of Wakelin, Virgin and Crystal. It has been found that residual microstrains are absent in these magnesia powders and the line broadening was only due to the small crystallite size. The parent compound influences the changes occurring during calcination and ultimately the powder properties such as degree of crystallinity, the crystallite size and the particle size etc which in turn influence the sinterability of these powders.
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