Effect of low level contamination on TiAl alloys studied by SIMS

Detalhes bibliográficos
Autor(a) principal: Teodoro, O. M. N. D.
Data de Publicação: 2004
Outros Autores: Barbosa, J., Naia, M. Duarte, Moutinho, A. M. C.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/1590
Resumo: Titanium aluminides are a valuable alternative to superalloys in applications where the ratio resistance/density is important. Since the ordinary production routes lead to high final costs, an alternative might be the use of traditional casting techniques by induction melting of the alloy in a ceramic crucible and pouring into ceramic moulds, made by the investment casting process. However, due to the high reactivity of Ti alloys, traditional ceramic materials cannot be used, as they lead to oxide formation and oxygen pick up from both the crucible and the moulding materials. In this work, the effect of low level contaminations was studied by SIMS. Special attention was given to the oxygen concentration of samples obtained with different mould materials. The comparison of SIMS in-depth profiles with hardness profiles, give insight concerning the significance of the oxygen concentration in the properties of the alloy and regarding the choice of the most suitable materials for TiAl production.
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spelling Effect of low level contamination on TiAl alloys studied by SIMSTitaniumContaminationSIMSCasting techniquesOxygen contaminationTiAlalloysScience & TechnologyTitanium aluminides are a valuable alternative to superalloys in applications where the ratio resistance/density is important. Since the ordinary production routes lead to high final costs, an alternative might be the use of traditional casting techniques by induction melting of the alloy in a ceramic crucible and pouring into ceramic moulds, made by the investment casting process. However, due to the high reactivity of Ti alloys, traditional ceramic materials cannot be used, as they lead to oxide formation and oxygen pick up from both the crucible and the moulding materials. In this work, the effect of low level contaminations was studied by SIMS. Special attention was given to the oxygen concentration of samples obtained with different mould materials. The comparison of SIMS in-depth profiles with hardness profiles, give insight concerning the significance of the oxygen concentration in the properties of the alloy and regarding the choice of the most suitable materials for TiAl production.ElsevierUniversidade do MinhoTeodoro, O. M. N. D.Barbosa, J.Naia, M. DuarteMoutinho, A. M. C.20042004-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/1590eng"Applied surface science". ISSN 0169-4332. 231-232 (2004) 854-858.0169-433210.1016/j.apsusc.2004.03.142info: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:RCAAP2023-07-21T12:21:29Zoai:repositorium.sdum.uminho.pt:1822/1590Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:14:48.756104Repositório 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 Effect of low level contamination on TiAl alloys studied by SIMS
title Effect of low level contamination on TiAl alloys studied by SIMS
spellingShingle Effect of low level contamination on TiAl alloys studied by SIMS
Teodoro, O. M. N. D.
Titanium
Contamination
SIMS
Casting techniques
Oxygen contamination
TiAl
alloys
Science & Technology
title_short Effect of low level contamination on TiAl alloys studied by SIMS
title_full Effect of low level contamination on TiAl alloys studied by SIMS
title_fullStr Effect of low level contamination on TiAl alloys studied by SIMS
title_full_unstemmed Effect of low level contamination on TiAl alloys studied by SIMS
title_sort Effect of low level contamination on TiAl alloys studied by SIMS
author Teodoro, O. M. N. D.
author_facet Teodoro, O. M. N. D.
Barbosa, J.
Naia, M. Duarte
Moutinho, A. M. C.
author_role author
author2 Barbosa, J.
Naia, M. Duarte
Moutinho, A. M. C.
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Teodoro, O. M. N. D.
Barbosa, J.
Naia, M. Duarte
Moutinho, A. M. C.
dc.subject.por.fl_str_mv Titanium
Contamination
SIMS
Casting techniques
Oxygen contamination
TiAl
alloys
Science & Technology
topic Titanium
Contamination
SIMS
Casting techniques
Oxygen contamination
TiAl
alloys
Science & Technology
description Titanium aluminides are a valuable alternative to superalloys in applications where the ratio resistance/density is important. Since the ordinary production routes lead to high final costs, an alternative might be the use of traditional casting techniques by induction melting of the alloy in a ceramic crucible and pouring into ceramic moulds, made by the investment casting process. However, due to the high reactivity of Ti alloys, traditional ceramic materials cannot be used, as they lead to oxide formation and oxygen pick up from both the crucible and the moulding materials. In this work, the effect of low level contaminations was studied by SIMS. Special attention was given to the oxygen concentration of samples obtained with different mould materials. The comparison of SIMS in-depth profiles with hardness profiles, give insight concerning the significance of the oxygen concentration in the properties of the alloy and regarding the choice of the most suitable materials for TiAl production.
publishDate 2004
dc.date.none.fl_str_mv 2004
2004-01-01T00:00:00Z
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/1822/1590
url http://hdl.handle.net/1822/1590
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv "Applied surface science". ISSN 0169-4332. 231-232 (2004) 854-858.
0169-4332
10.1016/j.apsusc.2004.03.142
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
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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