Studies on liquid-phase sintering were carried out on different MgO-china clay compacts containing 4, 8, 12, 16 and 20% by weight of china clay. Initial particle size of the powders taken was—45 microns. The green compacts of 1.25 cm dia were cold pressed at a constant pressure of 1600 kg/cm2 and sintered in a high temperature gas fired furnace in oxidising atmosphere at 1600°, 1650° and 1700°c for 0 to 8 hours. The rates of densification showed that MgO-12 wt % china clay compacts sintered at 1700°c for 4 hours, attained a maximum value of bulk density, i.e. 3.56 gm/cc. This value was 99.44% of the theoretical density. The same compacts, when sintered at 1650° and 1600°c for 4 hours, resulted in maximum values of bulk density, i.e. 3.53 and 3.44 gm/cc respectively. These values were 98.60 and 96.08% of the theoretical density. The values of apparent porosity of these sintered compacts were found to be 1.10, 3.50 and 5.20% respectively.For studying the kinetics of sintering, experimental data were analyse...

K. K. Singh

Papers

Studies on Liquid-Phase Sintering of MgO-China Clay Compacts