CA6 impact on the corrosion behavior of cement-bonded spinel-containing refractory castables: an analysis based on thermodynamic simulation

Autores
Tomba Martinez, Analia Gladys; Luz, A. P.; Braulio, M. A. L.; Pandolfelli, V. C.
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
This work focuses on the evaluation of the corrosion behavior of Al2O3-MgO cement-bonded castables based on thermodynamic calculations, in order to understand the reaction steps and some scientific and technological issues that still need to be better explained when such materials come into contact with basic industrial slags at high temperatures. Special attention was given to analyzing the role played by the calcium hexaluminate phase (CA6) during the first heating stage of the samples and their further chemical attack. Experimental measurements (cup tests at 1500 °C) and thermodynamic simulations were carried out considering a basic slag (CaO/SiO2=4.2) and four refractory castables with different spinel (MgAl2O4) sources (pre-formed or in situ) and with or without silica fume (0 or 1 wt%). Considering the attained results, a novel corrosion mechanism is proposed pointing out that a suitable design of the castable compositions can induce the formation of CA6 at the border of the coarse aggregates, preventing their further dissolution and increasing the overall wear resistance of these refractories. In Addition, incorporating optimized contents of silica fume and cement to the spinel-containing castables helps to master the generation of the CA6 and CA2 protective layers, resulting in a lower chemical attack at high temperatures.
Fil: Tomba Martinez, Analia Gladys. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigación en Ciencia y Tecnología de Materiales (i); Argentina. Universidad Nacional de Mar del Plata. Facultad de Ingenieria; Argentina
Fil: Luz, A. P.. Universidade Federal do São Carlos; Brasil
Fil: Braulio, M. A. L.. Universidade Federal do São Carlos; Brasil
Fil: Pandolfelli, V. C.. Universidade Federal do São Carlos; Brasil
Materia
C. CORROSION
CASTABLE
D. SPINEL
THERMODYNAMIC SIMULATION
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/2882

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spelling CA6 impact on the corrosion behavior of cement-bonded spinel-containing refractory castables: an analysis based on thermodynamic simulationTomba Martinez, Analia GladysLuz, A. P.Braulio, M. A. L.Pandolfelli, V. C.C. CORROSIONCASTABLED. SPINELTHERMODYNAMIC SIMULATIONhttps://purl.org/becyt/ford/2.3https://purl.org/becyt/ford/2https://purl.org/becyt/ford/2.5https://purl.org/becyt/ford/2https://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1This work focuses on the evaluation of the corrosion behavior of Al2O3-MgO cement-bonded castables based on thermodynamic calculations, in order to understand the reaction steps and some scientific and technological issues that still need to be better explained when such materials come into contact with basic industrial slags at high temperatures. Special attention was given to analyzing the role played by the calcium hexaluminate phase (CA6) during the first heating stage of the samples and their further chemical attack. Experimental measurements (cup tests at 1500 °C) and thermodynamic simulations were carried out considering a basic slag (CaO/SiO2=4.2) and four refractory castables with different spinel (MgAl2O4) sources (pre-formed or in situ) and with or without silica fume (0 or 1 wt%). Considering the attained results, a novel corrosion mechanism is proposed pointing out that a suitable design of the castable compositions can induce the formation of CA6 at the border of the coarse aggregates, preventing their further dissolution and increasing the overall wear resistance of these refractories. In Addition, incorporating optimized contents of silica fume and cement to the spinel-containing castables helps to master the generation of the CA6 and CA2 protective layers, resulting in a lower chemical attack at high temperatures.Fil: Tomba Martinez, Analia Gladys. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigación en Ciencia y Tecnología de Materiales (i); Argentina. Universidad Nacional de Mar del Plata. Facultad de Ingenieria; ArgentinaFil: Luz, A. P.. Universidade Federal do São Carlos; BrasilFil: Braulio, M. A. L.. Universidade Federal do São Carlos; BrasilFil: Pandolfelli, V. C.. Universidade Federal do São Carlos; BrasilElsevier2014-12-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/2882Tomba Martinez, Analia Gladys; Luz, A. P.; Braulio, M. A. L.; Pandolfelli, V. C.; CA6 impact on the corrosion behavior of cement-bonded spinel-containing refractory castables: an analysis based on thermodynamic simulation; Elsevier; Ceramics International; 41; 3; 11-12-2014; 4714-47250272-8842enginfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0272884214019415info:eu-repo/semantics/altIdentifier/doi/10.1016/j.ceramint.2014.12.020info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:44:30Zoai:ri.conicet.gov.ar:11336/2882instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:44:30.377CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv CA6 impact on the corrosion behavior of cement-bonded spinel-containing refractory castables: an analysis based on thermodynamic simulation
title CA6 impact on the corrosion behavior of cement-bonded spinel-containing refractory castables: an analysis based on thermodynamic simulation
spellingShingle CA6 impact on the corrosion behavior of cement-bonded spinel-containing refractory castables: an analysis based on thermodynamic simulation
Tomba Martinez, Analia Gladys
C. CORROSION
CASTABLE
D. SPINEL
THERMODYNAMIC SIMULATION
title_short CA6 impact on the corrosion behavior of cement-bonded spinel-containing refractory castables: an analysis based on thermodynamic simulation
title_full CA6 impact on the corrosion behavior of cement-bonded spinel-containing refractory castables: an analysis based on thermodynamic simulation
title_fullStr CA6 impact on the corrosion behavior of cement-bonded spinel-containing refractory castables: an analysis based on thermodynamic simulation
title_full_unstemmed CA6 impact on the corrosion behavior of cement-bonded spinel-containing refractory castables: an analysis based on thermodynamic simulation
title_sort CA6 impact on the corrosion behavior of cement-bonded spinel-containing refractory castables: an analysis based on thermodynamic simulation
dc.creator.none.fl_str_mv Tomba Martinez, Analia Gladys
Luz, A. P.
Braulio, M. A. L.
Pandolfelli, V. C.
author Tomba Martinez, Analia Gladys
author_facet Tomba Martinez, Analia Gladys
Luz, A. P.
Braulio, M. A. L.
Pandolfelli, V. C.
author_role author
author2 Luz, A. P.
Braulio, M. A. L.
Pandolfelli, V. C.
author2_role author
author
author
dc.subject.none.fl_str_mv C. CORROSION
CASTABLE
D. SPINEL
THERMODYNAMIC SIMULATION
topic C. CORROSION
CASTABLE
D. SPINEL
THERMODYNAMIC SIMULATION
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.3
https://purl.org/becyt/ford/2
https://purl.org/becyt/ford/2.5
https://purl.org/becyt/ford/2
https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv This work focuses on the evaluation of the corrosion behavior of Al2O3-MgO cement-bonded castables based on thermodynamic calculations, in order to understand the reaction steps and some scientific and technological issues that still need to be better explained when such materials come into contact with basic industrial slags at high temperatures. Special attention was given to analyzing the role played by the calcium hexaluminate phase (CA6) during the first heating stage of the samples and their further chemical attack. Experimental measurements (cup tests at 1500 °C) and thermodynamic simulations were carried out considering a basic slag (CaO/SiO2=4.2) and four refractory castables with different spinel (MgAl2O4) sources (pre-formed or in situ) and with or without silica fume (0 or 1 wt%). Considering the attained results, a novel corrosion mechanism is proposed pointing out that a suitable design of the castable compositions can induce the formation of CA6 at the border of the coarse aggregates, preventing their further dissolution and increasing the overall wear resistance of these refractories. In Addition, incorporating optimized contents of silica fume and cement to the spinel-containing castables helps to master the generation of the CA6 and CA2 protective layers, resulting in a lower chemical attack at high temperatures.
Fil: Tomba Martinez, Analia Gladys. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigación en Ciencia y Tecnología de Materiales (i); Argentina. Universidad Nacional de Mar del Plata. Facultad de Ingenieria; Argentina
Fil: Luz, A. P.. Universidade Federal do São Carlos; Brasil
Fil: Braulio, M. A. L.. Universidade Federal do São Carlos; Brasil
Fil: Pandolfelli, V. C.. Universidade Federal do São Carlos; Brasil
description This work focuses on the evaluation of the corrosion behavior of Al2O3-MgO cement-bonded castables based on thermodynamic calculations, in order to understand the reaction steps and some scientific and technological issues that still need to be better explained when such materials come into contact with basic industrial slags at high temperatures. Special attention was given to analyzing the role played by the calcium hexaluminate phase (CA6) during the first heating stage of the samples and their further chemical attack. Experimental measurements (cup tests at 1500 °C) and thermodynamic simulations were carried out considering a basic slag (CaO/SiO2=4.2) and four refractory castables with different spinel (MgAl2O4) sources (pre-formed or in situ) and with or without silica fume (0 or 1 wt%). Considering the attained results, a novel corrosion mechanism is proposed pointing out that a suitable design of the castable compositions can induce the formation of CA6 at the border of the coarse aggregates, preventing their further dissolution and increasing the overall wear resistance of these refractories. In Addition, incorporating optimized contents of silica fume and cement to the spinel-containing castables helps to master the generation of the CA6 and CA2 protective layers, resulting in a lower chemical attack at high temperatures.
publishDate 2014
dc.date.none.fl_str_mv 2014-12-11
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/2882
Tomba Martinez, Analia Gladys; Luz, A. P.; Braulio, M. A. L.; Pandolfelli, V. C.; CA6 impact on the corrosion behavior of cement-bonded spinel-containing refractory castables: an analysis based on thermodynamic simulation; Elsevier; Ceramics International; 41; 3; 11-12-2014; 4714-4725
0272-8842
url http://hdl.handle.net/11336/2882
identifier_str_mv Tomba Martinez, Analia Gladys; Luz, A. P.; Braulio, M. A. L.; Pandolfelli, V. C.; CA6 impact on the corrosion behavior of cement-bonded spinel-containing refractory castables: an analysis based on thermodynamic simulation; Elsevier; Ceramics International; 41; 3; 11-12-2014; 4714-4725
0272-8842
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0272884214019415
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.ceramint.2014.12.020
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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