Abstract
With the use of differential thermal analysis, X‐ray diffraction, and transmission electron microscopic techniques, we showed that γ‐Al2O3 type spinel phase is solely responsible for the 980°C exotherm in the kaolinite‐to‐mullite reaction series. Transmission electron microscopic characterization indicated that the spinel formation is preceded by a phase separation in the amorphous dehydroxylated kaolinite matrix. Chemical analysis of the spinel phase by energy dispersive X‐ray spectroscopy revealed a nearly pure Al3O2 composition.
Original language | English (US) |
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Pages (from-to) | 837-842 |
Number of pages | 6 |
Journal | Journal of the American Ceramic Society |
Volume | 70 |
Issue number | 11 |
DOIs | |
State | Published - Nov 1987 |
All Science Journal Classification (ASJC) codes
- Ceramics and Composites
- Materials Chemistry