Phase development during thermal treatment of a fast-setting cordierite-mullite refractory

Cordierite based materials are widely used in high temperature applications due to their good thermo-mechanical properties and thermal shock resistance. They are generally employed in the kiln furniture (shelves, brackets, bearing plates) for firing ceramic pieces. Because of its low expansion coeff...

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Autores principales: Hipedinger, Nora Elba, Scian, Alberto Néstor, Aglietti, Esteban Fausto
Formato: Articulo
Lenguaje:Inglés
Publicado: 2015
Materias:
Química
Cordierite
Refractory
Magnesia-phosphate bond
Fast setting
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/120014
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-120014
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Química
Cordierite
Refractory
Magnesia-phosphate bond
Fast setting
spellingShingle Química
Cordierite
Refractory
Magnesia-phosphate bond
Fast setting
Hipedinger, Nora Elba
Scian, Alberto Néstor
Aglietti, Esteban Fausto
Phase development during thermal treatment of a fast-setting cordierite-mullite refractory
topic_facet Química
Cordierite
Refractory
Magnesia-phosphate bond
Fast setting
description Cordierite based materials are widely used in high temperature applications due to their good thermo-mechanical properties and thermal shock resistance. They are generally employed in the kiln furniture (shelves, brackets, bearing plates) for firing ceramic pieces. Because of its low expansion coefficient and dielectric properties, cordierite is also used in advanced ceramics, catalyst supports automotive, industrial waste gas purification and parts subjected to sudden temperature changes. The low intrinsic strength of the cordierite may be compensated by the presence of mullite, forming a composite material of cordierite-mullite, extending its use to somewhat higher temperatures, at the expense of a slight increase in the thermal expansion coefficient. In this work a cordierite-mullite precursor was prepared from a mixture of magnesium oxide, calcined alumina, silica fume and monoaluminum phosphate solution that produces fast setting at room temperature (~20 minutes) and then, by calcination, cordierite-mullite is generated. The evolution of the mineralogical phases was studied from room temperature to 1350 °C by Xray diffraction, differential thermal analysis and thermogravimetry. A possible sequence of chemicals reactions throughout the heat treatment is also proposed. Adding refractory aggregates to this precursor leads to obtaining a fast-setting concrete, suitable for the formation of individual pieces or repair service at moderately high temperatures. A summary of its main properties is also included.
format Articulo
Articulo
author Hipedinger, Nora Elba
Scian, Alberto Néstor
Aglietti, Esteban Fausto
author_facet Hipedinger, Nora Elba
Scian, Alberto Néstor
Aglietti, Esteban Fausto
author_sort Hipedinger, Nora Elba
title Phase development during thermal treatment of a fast-setting cordierite-mullite refractory
title_short Phase development during thermal treatment of a fast-setting cordierite-mullite refractory
title_full Phase development during thermal treatment of a fast-setting cordierite-mullite refractory
title_fullStr Phase development during thermal treatment of a fast-setting cordierite-mullite refractory
title_full_unstemmed Phase development during thermal treatment of a fast-setting cordierite-mullite refractory
title_sort phase development during thermal treatment of a fast-setting cordierite-mullite refractory
publishDate 2015
url http://sedici.unlp.edu.ar/handle/10915/120014
work_keys_str_mv AT hipedingernoraelba phasedevelopmentduringthermaltreatmentofafastsettingcordieritemulliterefractory
AT scianalbertonestor phasedevelopmentduringthermaltreatmentofafastsettingcordieritemulliterefractory
AT agliettiestebanfausto phasedevelopmentduringthermaltreatmentofafastsettingcordieritemulliterefractory
bdutipo_str Repositorios
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