| Enhanced sintering of tin dioxide with additives, viz. of MoO, CuO,
ZnO and Li2C03, has been studied under non-isothermal condition.
The kinetics of sintering has been studied under constant heating rate
of 5°, 10° and 15°C per minute.
With the additiv& Mn02 , different shrinkage curves were obtained
for three heating rates. The kinetic parameters were calculated for
this system and the predominant sintering mechanism was found to be
dependent on both temperature and the stages of sintering. It was
evident from the values of kinetic parameters that both viscous flow
and volume diffusion mechanisms were operating simultaneously; although at lower heating rate, predominant contribution of viscous
flow was evident. |
