Sintering high purity, magnesia with additions of hafnium dioxide

Activity of the raw material and the firing conditions as factors in the sintering and growth of calcium titanate grains

“…The kinetics of the sintering of perovskite follows the same laws as the kinetics of sintering of refractory oxides and magnesia spinel [19][20][21][22], i.e., the shrinkage is described by the equation At/t = m + m/~, where m is a coefficient equal to the shrinkage during isothermal holding, %; n is a coefficient equal to the rate of the isothermal shrinkage, %/h; and r is the time, h (Fig. 10).…”