| lnvestgetions were carried out on eutectic sintering of MgO
and Al20 3 with a tri-component eutectic made from a
mixture of magnesium oxide, aluminium oxide and silica.
An intimate mixture of tri-component eutectic with 20.5%
MgO, 17.5% AI20 3 and 62% Si02 was prepared at
1400°C for 2 hours. The densification behaviour and microstructure
have been studied on pellets of MgO and Al.03
using 3, 5, and 10% by wt of the eutectic mixture at temperatures
varying from 1350° to 1600°C. The study revealed
that 3 and 5 wt % of the eutectic liquid was just sufficient
to attain the approximate theoretical density of magnesia
and alumina respectively. The shrinkage data ware analysed
to understand the mechanism of sintering. |
