Mechanical properties of sintered La9.33Si2Ge4O26 oxyapatite materials for SOFC electrolytes

Detalhes bibliográficos
Autor(a) principal: Santos, Miguel
Data de Publicação: 2012
Outros Autores: Alves, Cátia, Oliveira, Fernando Almeida Costa, Marcelo, Teresa, Mascarenhas, João, Fernandes, J.V., Trindade, B.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.9/1693
Resumo: Mechanical properties of La9.33Si2Ge4O26 prepared by mechanical alloying and subsequent sintering at 1300–1400 °C for 1 h were evaluated. Hardness and Young's modulus values in the range 7.3–9.6 GPa and 106–135 GPa, respectively, were obtained from nanohardness tests. The fracture toughness values derived from the Palmqvist method varied between 3.5 and 3.9 MPa m1/2 from classical microindentation test with an indentation load of 9.8 N. Yield stress (σy) was determined by inverse analysis from microhardness tests. The maximum value of σy (1829 MPa) was obtained for the sample sintered at 1400 °C showing the highest density (5.42 g/cm3).
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spelling Mechanical properties of sintered La9.33Si2Ge4O26 oxyapatite materials for SOFC electrolytesC. Mechanical propertiesLanthanum-based oxyapatiteMechanical alloyingSOFCMechanical properties of La9.33Si2Ge4O26 prepared by mechanical alloying and subsequent sintering at 1300–1400 °C for 1 h were evaluated. Hardness and Young's modulus values in the range 7.3–9.6 GPa and 106–135 GPa, respectively, were obtained from nanohardness tests. The fracture toughness values derived from the Palmqvist method varied between 3.5 and 3.9 MPa m1/2 from classical microindentation test with an indentation load of 9.8 N. Yield stress (σy) was determined by inverse analysis from microhardness tests. The maximum value of σy (1829 MPa) was obtained for the sample sintered at 1400 °C showing the highest density (5.42 g/cm3).ElsevierRepositório do LNEGSantos, MiguelAlves, CátiaOliveira, Fernando Almeida CostaMarcelo, TeresaMascarenhas, JoãoFernandes, J.V.Trindade, B.2013-03-11T17:05:17Z2012-01-01T00:00:00Z2012-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.9/1693engSantos, M.; Alves, C.; Oliveira, F.A.C.; Marcelo, T.; Mascarenhas, J.; Fernandes, J.V.; Trindade, B. Mechanical properties of sintered La9.33Si2Ge4O26 oxyapatite materials for SOFC electrolytes. In: Ceramics International, 2012, vol. 38, nº 8, p. 6151-61560272-8842info: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:RCAAP2022-09-06T12:26:17Zoai:repositorio.lneg.pt:10400.9/1693Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T15:34:28.230003Repositório 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 Mechanical properties of sintered La9.33Si2Ge4O26 oxyapatite materials for SOFC electrolytes
title Mechanical properties of sintered La9.33Si2Ge4O26 oxyapatite materials for SOFC electrolytes
spellingShingle Mechanical properties of sintered La9.33Si2Ge4O26 oxyapatite materials for SOFC electrolytes
Santos, Miguel
C. Mechanical properties
Lanthanum-based oxyapatite
Mechanical alloying
SOFC
title_short Mechanical properties of sintered La9.33Si2Ge4O26 oxyapatite materials for SOFC electrolytes
title_full Mechanical properties of sintered La9.33Si2Ge4O26 oxyapatite materials for SOFC electrolytes
title_fullStr Mechanical properties of sintered La9.33Si2Ge4O26 oxyapatite materials for SOFC electrolytes
title_full_unstemmed Mechanical properties of sintered La9.33Si2Ge4O26 oxyapatite materials for SOFC electrolytes
title_sort Mechanical properties of sintered La9.33Si2Ge4O26 oxyapatite materials for SOFC electrolytes
author Santos, Miguel
author_facet Santos, Miguel
Alves, Cátia
Oliveira, Fernando Almeida Costa
Marcelo, Teresa
Mascarenhas, João
Fernandes, J.V.
Trindade, B.
author_role author
author2 Alves, Cátia
Oliveira, Fernando Almeida Costa
Marcelo, Teresa
Mascarenhas, João
Fernandes, J.V.
Trindade, B.
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Repositório do LNEG
dc.contributor.author.fl_str_mv Santos, Miguel
Alves, Cátia
Oliveira, Fernando Almeida Costa
Marcelo, Teresa
Mascarenhas, João
Fernandes, J.V.
Trindade, B.
dc.subject.por.fl_str_mv C. Mechanical properties
Lanthanum-based oxyapatite
Mechanical alloying
SOFC
topic C. Mechanical properties
Lanthanum-based oxyapatite
Mechanical alloying
SOFC
description Mechanical properties of La9.33Si2Ge4O26 prepared by mechanical alloying and subsequent sintering at 1300–1400 °C for 1 h were evaluated. Hardness and Young's modulus values in the range 7.3–9.6 GPa and 106–135 GPa, respectively, were obtained from nanohardness tests. The fracture toughness values derived from the Palmqvist method varied between 3.5 and 3.9 MPa m1/2 from classical microindentation test with an indentation load of 9.8 N. Yield stress (σy) was determined by inverse analysis from microhardness tests. The maximum value of σy (1829 MPa) was obtained for the sample sintered at 1400 °C showing the highest density (5.42 g/cm3).
publishDate 2012
dc.date.none.fl_str_mv 2012-01-01T00:00:00Z
2012-01-01T00:00:00Z
2013-03-11T17:05:17Z
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/10400.9/1693
url http://hdl.handle.net/10400.9/1693
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Santos, M.; Alves, C.; Oliveira, F.A.C.; Marcelo, T.; Mascarenhas, J.; Fernandes, J.V.; Trindade, B. Mechanical properties of sintered La9.33Si2Ge4O26 oxyapatite materials for SOFC electrolytes. In: Ceramics International, 2012, vol. 38, nº 8, p. 6151-6156
0272-8842
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 Elsevier
publisher.none.fl_str_mv Elsevier
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
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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
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