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RESEARCH PRODUCT
Microstructural evolution and growth of crystallite size of mullite during thermal transformation of kyanite
F. J. SerranoAngel CaballeroJoaquín BastidaM.a. Sainzsubject
Platelet MorphologyMicrostructural evolutionMaterials scienceThermal transformationMineralogyMulliteAtmospheric temperature rangeKyanitevisual_artMaterials ChemistryCeramics and Compositesvisual_art.visual_art_mediumCrystalliteComposite materialdescription
Abstract The microstructural evolution of mullite during the thermal transformation of kyanite has been studied in the temperature range 1200–1600 °C. The shape and size of the grains were analysed by means of SEM-EDS while crystallite size evolution was studied by X-ray line profile analyses. The results obtained showed that total transformation of kyanite to mullite takes place between 1350 and 1400 °C. At temperatures below 1350 °C needle-like mullite grains are always produced. At higher temperatures the mullite grains reveal rounded end platelet morphology. Evolution from needle-like to platelet shape was correlated with the X-ray data.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1997-01-01 |