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Mullite formation kinetic from a porcelain stoneware body for tiles production

AutorRomero, Maximina; Martín-Márquez, Jorge; Rincón López, Jesús María
Palabras claveMullite
Porcelain stoneware
Growth kinetics
DTA analysis
Ceramic tile
Fecha de publicación2006
EditorElsevier
CitaciónJournal of the European Ceramic Society 26 (2006) 1647–1652
ResumenThe growth of mullite (3Al2O3•2SiO2) in a porcelain stoneware body for tiles production has been investigated using differential thermal analysis (DTA). The activation energy calculated by both isothermal and non-isothermal treatments is 599 and 622 kJ mol-1 respectively. The growth morphology parameters n and m are both about 1.5 indicating that bulk nucleation is dominant in mullite crystallization followed by three-dimensional growth of mullite crystals with polyhedron-like morphology controlled by diffusion from a constant number of nuclei. The frequency factor calculated by the isothermal treatment is equal to 8.21 x 1022 s-1.
URIhttp://hdl.handle.net/10261/6353
ISSN0955-2219
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