Effect of low level contamination on TiAl alloys studied by SIMS
Autor(a) principal: | |
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Data de Publicação: | 2004 |
Outros Autores: | , , |
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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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) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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