Fracture toughness of dense cordierite: sintering cycle effect

Detalhes bibliográficos
Autor(a) principal: Oliveira, Fernando Almeida Costa
Data de Publicação: 2013
Outros Autores: Fernandes, Jorge Cruz, Schmitt, Julien, Rosa, Luís Guerra, Dias, Diamantino
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.9/2185
Resumo: The aim of this work was to analyse the fracture behaviour of commercial dense cordierite bodies sintered in an electrical furnace in static air at 1250ºC, 1275ºC and 1300ºC for 30 min using different cycling schedules in order to obtain tougher materials at minimum energy costs. Using a stereomicroscope and a scanning electron microscope, fracture surfaces of as-sintered bars tested under four-point bending at room temperature were examined at different magnification levels in order to determine the origin of fracture in each sintered bar. Once the fracture origin was identified, it was possible to measure its size, and based on ASTM C1322-96a standard, we were able to estimate the fracture toughness of the sintered parts. Fracture toughness was found to increase with increasing of sintering temperature from 1.8 MPa·m½ to 3.1 MPa·m½ by rising the temperature from 1250ºC to 1300ºC as the fracture process is strongly influenced by the microstructure of the material.
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spelling Fracture toughness of dense cordierite: sintering cycle effectCordieriteFracture ToughnessSinteringStrengthThe aim of this work was to analyse the fracture behaviour of commercial dense cordierite bodies sintered in an electrical furnace in static air at 1250ºC, 1275ºC and 1300ºC for 30 min using different cycling schedules in order to obtain tougher materials at minimum energy costs. Using a stereomicroscope and a scanning electron microscope, fracture surfaces of as-sintered bars tested under four-point bending at room temperature were examined at different magnification levels in order to determine the origin of fracture in each sintered bar. Once the fracture origin was identified, it was possible to measure its size, and based on ASTM C1322-96a standard, we were able to estimate the fracture toughness of the sintered parts. Fracture toughness was found to increase with increasing of sintering temperature from 1.8 MPa·m½ to 3.1 MPa·m½ by rising the temperature from 1250ºC to 1300ºC as the fracture process is strongly influenced by the microstructure of the material.Trans. Tech. PublicationsRepositório do LNEGOliveira, Fernando Almeida CostaFernandes, Jorge CruzSchmitt, JulienRosa, Luís GuerraDias, Diamantino2014-02-12T12:20:25Z20132013-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.9/2185engOliveira, F.A. Costa; Fernandes, J. Cruz; Schmitt, J.; Rosa, L.Guerra; Dias, D. Fracture toughness of dense cordierite: sintering cycle effect. In: Materials Science Forum, 2013, Vol. 730-732, p. 445-4491662-9752info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2022-12-04T04:45:00Zoai:repositorio.lneg.pt:10400.9/2185Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T15:35:04.230395Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Fracture toughness of dense cordierite: sintering cycle effect
title Fracture toughness of dense cordierite: sintering cycle effect
spellingShingle Fracture toughness of dense cordierite: sintering cycle effect
Oliveira, Fernando Almeida Costa
Cordierite
Fracture Toughness
Sintering
Strength
title_short Fracture toughness of dense cordierite: sintering cycle effect
title_full Fracture toughness of dense cordierite: sintering cycle effect
title_fullStr Fracture toughness of dense cordierite: sintering cycle effect
title_full_unstemmed Fracture toughness of dense cordierite: sintering cycle effect
title_sort Fracture toughness of dense cordierite: sintering cycle effect
author Oliveira, Fernando Almeida Costa
author_facet Oliveira, Fernando Almeida Costa
Fernandes, Jorge Cruz
Schmitt, Julien
Rosa, Luís Guerra
Dias, Diamantino
author_role author
author2 Fernandes, Jorge Cruz
Schmitt, Julien
Rosa, Luís Guerra
Dias, Diamantino
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Repositório do LNEG
dc.contributor.author.fl_str_mv Oliveira, Fernando Almeida Costa
Fernandes, Jorge Cruz
Schmitt, Julien
Rosa, Luís Guerra
Dias, Diamantino
dc.subject.por.fl_str_mv Cordierite
Fracture Toughness
Sintering
Strength
topic Cordierite
Fracture Toughness
Sintering
Strength
description The aim of this work was to analyse the fracture behaviour of commercial dense cordierite bodies sintered in an electrical furnace in static air at 1250ºC, 1275ºC and 1300ºC for 30 min using different cycling schedules in order to obtain tougher materials at minimum energy costs. Using a stereomicroscope and a scanning electron microscope, fracture surfaces of as-sintered bars tested under four-point bending at room temperature were examined at different magnification levels in order to determine the origin of fracture in each sintered bar. Once the fracture origin was identified, it was possible to measure its size, and based on ASTM C1322-96a standard, we were able to estimate the fracture toughness of the sintered parts. Fracture toughness was found to increase with increasing of sintering temperature from 1.8 MPa·m½ to 3.1 MPa·m½ by rising the temperature from 1250ºC to 1300ºC as the fracture process is strongly influenced by the microstructure of the material.
publishDate 2013
dc.date.none.fl_str_mv 2013
2013-01-01T00:00:00Z
2014-02-12T12:20:25Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.9/2185
url http://hdl.handle.net/10400.9/2185
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Oliveira, F.A. Costa; Fernandes, J. Cruz; Schmitt, J.; Rosa, L.Guerra; Dias, D. Fracture toughness of dense cordierite: sintering cycle effect. In: Materials Science Forum, 2013, Vol. 730-732, p. 445-449
1662-9752
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Trans. Tech. Publications
publisher.none.fl_str_mv Trans. Tech. Publications
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
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