Kinetic study of mullite growth in sanitary-ware production by in situ HT-XRPD. The influence of the filler/flux ratio (Articolo in rivista)

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  • Kinetic study of mullite growth in sanitary-ware production by in situ HT-XRPD. The influence of the filler/flux ratio (Articolo in rivista) (literal)
Anno
  • 2011-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.jeurceramsoc.2010.10.002 (literal)
Alternative label
  • Nicoletta Marinoni Andrea Pagani Ilaria Adamo Valeria Diella Alessandro Pavese Fernando Francescon (2011)
    Kinetic study of mullite growth in sanitary-ware production by in situ HT-XRPD. The influence of the filler/flux ratio
    in Journal of the European Ceramic Society; Elsevier Ltd, Oxford (Regno Unito)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Nicoletta Marinoni Andrea Pagani Ilaria Adamo Valeria Diella Alessandro Pavese Fernando Francescon (literal)
Pagina inizio
  • 273 (literal)
Pagina fine
  • 280 (literal)
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  • 31 (literal)
Rivista
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  • 8 (literal)
Note
  • ISI Web of Science (WOS) (literal)
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  • Dipartimento di Scienze della Terra \"Ardito Desio\", Università degli Studi di Milano, Via Botticelli 23, 20133 Milan, Italy National Research Council, IDPA, Section of Milan, Via Botticelli 23, I-20133 Milan, Italy Dipartimento di Scienze della Terra \"Ardito Desio\", Università degli Studi di Milano, Via Botticelli 23, 20133 Milan, Italy National Research Council, IDPA, Section of Milan, Via Botticelli 23, I-20133 Milan, Italy Dipartimento di Scienze della Terra \"Ardito Desio\", Università degli Studi di Milano, Via Botticelli 23, 20133 Milan, Italy e National Research Council, IDPA, Section of Milan, Via Botticelli 23, I-20133 Milan, Italy Ideal Standard International, C.O.E., Ceramic Process Technology, Via Cavassico Inferiore 160, I-32026 Trichiana, BL, Italy (literal)
Titolo
  • Kinetic study of mullite growth in sanitary-ware production by in situ HT-XRPD. The influence of the filler/flux ratio (literal)
Abstract
  • The mullitisation kinetics in a sanitary-ware-like precursor system is here investigated by means of high-temperature X-ray powder diffraction, as a function of the filler/flux ratio. We used a blend based on kaolinite (50 wt%), quartz (10-28 wt%) and Na-feldspar (22-40 wt%). The results show that the content of feldspar boosts the formation of mullite as proven by the apparent activation energy values determined, ranging from 394 to 1111 kJ/mol, and giving a dEa/dxfeldspar ~ -23 kJ/mol/wt (xfeldspar = feldspar weight fraction). The mullitisation temperature has also been observed to depend on the Na-feldspar content, inasmuch as the sample bearing the smallest amount of feldspar flux exhibits a mullite growth onset between 1100 and 1150 oC, that is at a temperature about 50 oC higher than the one observed in the richer blends. The mullitisation kinetic process is in this work described as a one-mechanism transformation, satisfactorily formalised by Avrami-Erofeyev equation. (literal)
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