| Sintering of Thoria Powders-Part IV
Development of Crystallinity in Thoria Powders
During Heating and its Influence on their
Sintering Behaviour |
V. K. MOORTHY, G. ESWARA PRASAD AND A. K. KULKARNI
Pages : 103-111
DOI : 10.1080/0371750X.1965.10855525 |
| Abstract |
| Thoria powders of different origins and thermal history have been shown to have
different sintering characteristics. The difference in the sintering behaviour could not be
completely accounted for by the physical characteristics of the powder.
The development of crystallinity with rise in temperature was studied in case of
thoria powders prepared at 600°() from oxalate, carbonate and tannate, and those derived
from the compound in situ, using a high temperature X-ray camera. Marked differences in
crystallinity were noticed for powders of different origins and for those of the same
origin but subjected to different calcination treatments. The shapes of the particles of different
origins and calcination treatments were studied by electron microscopy. An attempt has
been made to explain differences in the sintering behaviour of thoria, of different origins
and thermal history on the basis of the crystallinity of the powders. |
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