Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10625962 | Ceramics International | 2013 | 7 Pages |
Abstract
The roentgen-amorphous delaminated and dehydroxylated phase was prepared applying intensive milling procedure and subsequent thermal treatment of talc. Due to the similarity in properties and in thermal behavior of this material with roentgen-amorphous delaminated and dehydroxylated kaolinite phase, i.e. meta-kaolinite, the name meta-talc was suggested for this material. The properties and the behavior during thermal treatment were investigated using thermal analysis, x-ray diffraction analysis, infrared spectroscopy and scanning electron microscopy. The suggested procedure changes the activation energy of dehydroxylation, the behavior during thermal treatment and the phase composition of the product. The kinetics and thermodynamics of the thermal transition were evaluated using Kissinger equation and Eyering law.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Petr PtáÄek, TomáÅ¡ Opravil, FrantiÅ¡ek Å oukal, JaromÃr Havlica, JiÅà Másilko, JaromÃr Wasserbauer,