| Studies on Sintering of Beryllia-Part IV: Mechanism
of Sintering During Hot Pressing of Beryllia |
V. K. MooRTHY AND R. BHAT
Pages : 165-171
DOI : 10.1080/0371750X.1968.10855646 |
| Abstract |
| The beryllium oxide obtained by calcination of Be(OH)2 at various temperatures
was hot pressed at different temperatures and pressures. The densities obtained depended
on the calcination temperature and increased directly with an increase in either
the hot pressing temperature or pressure. The data is found to be in accord with McClellands
equation; both the yield stress and activation energy are found to be enhanced
with an increase in calcination temperature. It thus appears that the densification
during hot pressing of active BeO powders is due to macroscopic material movement
(plastic flow) and is directly dependent on the crystallinity of the powder. |
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