Some observations of microstructural changes in alumina induced by Ti inhomogeneities
- 1 August 1988
- journal article
- Published by Springer Nature in Journal of Materials Research
- Vol. 3 (4) , 764-771
- https://doi.org/10.1557/jmr.1988.0764
Abstract
Analysis of Ti-containing heterogeneities in a hot-pressed Al2O3 has revealed changes in microstructure caused by oxidation that provide some insight regarding the effects of Ti on local grain growth. The most consistent hypothesis is that Ti4+ in solution compensates the Mg2+ ion taken into solution from the MgO additive, probably by forming dipoles, and negates the effect of Mg2+ on grain boundary drag.Keywords
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