| Effect of Environmental Impurities on the Microstructure
and Sinterability of Alumina Ceramics |
S. R. DAS, B. P. GHOSH AND s. K. GUHA
Pages : 152-155
DOI : 10.1080/0371750X.1986.10822814 |
| Abstract |
| The effect of volatiles present in the kiln atmosphere on the sinterability
and microstructure of alumina ceramics was studied. The
experiments were so designed that the volatile impurities generated
from the respective salts of Na, Cu, Zn, Ni, Cr and Fe were allowed
to act on pure alumina ceramics.
The properties studied included porosity, density, fired shrinkage,
microhardness, power factor, loss factor, volume resistivity and
dielectric strength. Scanning Electron Microscopy was used for the
characterization of the resulting microstructures. The results when
compared with the cotresponding properties of alumina ceramics
fired under a pure environment have been presented. |
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