| Sintering Studies in Magnesia-Monticellite System |
R. BHAT, S. K. RoY AND S. V. K. RAO
Pages : 63-67
DOI : 10.1080/0371750X.1989.10822948 |
| Abstract |
| The effects of silicate boundary phase provided by monticellite
(CaMgSi04) decomposition in situ on the sintering behaviour of
magnesium oxide powder compacts have been studied. The parameteis
include median particle size, nature and quantity of silicate
liquids and thermal treatments.
Inadequate amount of viscous liquid formation at 1490°C due to
peritectic reaction of monticellite (CMS) seemed to hinder the densification
in magnesia-monticellite system. On the other hand, complete
melting of monticellite at 1650oC enhanced densification to 3.16
gm.cm-3 from 2.75 gm.cm-3 at 1490°C for samples containing
12% CMS. Under the conditions of sintering, liquid formation followed
by particle rearrangement played the principal role in densification. |
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