Laser Selectivity on Cleaning Museologic Iron Artefacts

Detalhes bibliográficos
Autor(a) principal: Pereira,Gilberto
Data de Publicação: 2008
Outros Autores: Pires,Margarida, Costa,Benilde F. O., Costa,Fernanda
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://scielo.pt/scielo.php?script=sci_arttext&pid=S0870-11642008000300001
Resumo: Three distinct techniques were used to clean Fe alloys objects with surface corrosion. These objects are presently kept in Physics Museum of the University of Coimbra. The techniques used were mechanical, chemical (EDTA solution) and LASER (pulsed CO2 and Nd:YAG - Q-Switch). The chemical characterisation and the evaluation of the cleaning degree were done by transmission 57Fe Mössbauer spectroscopy. The results suggest that: the mechanical process of cleaning does not allow total removal of corrosion, reaching easily the substrate and so causing mechanical damage; the cleaning method using EDTA in confined environment and high controlled conditions, removes the corrosion products efficiently, without damaging the surface; and the cleaning methods using LASER although not achieving complete removal of corrosion, show clear characteristics of selectivity when acting on the corrosion layer or on the metal surface.
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spelling Laser Selectivity on Cleaning Museologic Iron ArtefactsMuseologic ArtefactsIron CorrosionCleaning LaserThree distinct techniques were used to clean Fe alloys objects with surface corrosion. These objects are presently kept in Physics Museum of the University of Coimbra. The techniques used were mechanical, chemical (EDTA solution) and LASER (pulsed CO2 and Nd:YAG - Q-Switch). The chemical characterisation and the evaluation of the cleaning degree were done by transmission 57Fe Mössbauer spectroscopy. The results suggest that: the mechanical process of cleaning does not allow total removal of corrosion, reaching easily the substrate and so causing mechanical damage; the cleaning method using EDTA in confined environment and high controlled conditions, removes the corrosion products efficiently, without damaging the surface; and the cleaning methods using LASER although not achieving complete removal of corrosion, show clear characteristics of selectivity when acting on the corrosion layer or on the metal surface.LNEG - Laboratório Nacional de Energia e Geologia, I.P.2008-09-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articletext/htmlhttp://scielo.pt/scielo.php?script=sci_arttext&pid=S0870-11642008000300001Corrosão e Protecção de Materiais v.27 n.3 2008reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAPenghttp://scielo.pt/scielo.php?script=sci_arttext&pid=S0870-11642008000300001Pereira,GilbertoPires,MargaridaCosta,Benilde F. O.Costa,Fernandainfo:eu-repo/semantics/openAccess2024-02-06T16:58:48Zoai:scielo:S0870-11642008000300001Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T02:15:22.874342Repositório 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 Laser Selectivity on Cleaning Museologic Iron Artefacts
title Laser Selectivity on Cleaning Museologic Iron Artefacts
spellingShingle Laser Selectivity on Cleaning Museologic Iron Artefacts
Pereira,Gilberto
Museologic Artefacts
Iron Corrosion
Cleaning Laser
title_short Laser Selectivity on Cleaning Museologic Iron Artefacts
title_full Laser Selectivity on Cleaning Museologic Iron Artefacts
title_fullStr Laser Selectivity on Cleaning Museologic Iron Artefacts
title_full_unstemmed Laser Selectivity on Cleaning Museologic Iron Artefacts
title_sort Laser Selectivity on Cleaning Museologic Iron Artefacts
author Pereira,Gilberto
author_facet Pereira,Gilberto
Pires,Margarida
Costa,Benilde F. O.
Costa,Fernanda
author_role author
author2 Pires,Margarida
Costa,Benilde F. O.
Costa,Fernanda
author2_role author
author
author
dc.contributor.author.fl_str_mv Pereira,Gilberto
Pires,Margarida
Costa,Benilde F. O.
Costa,Fernanda
dc.subject.por.fl_str_mv Museologic Artefacts
Iron Corrosion
Cleaning Laser
topic Museologic Artefacts
Iron Corrosion
Cleaning Laser
description Three distinct techniques were used to clean Fe alloys objects with surface corrosion. These objects are presently kept in Physics Museum of the University of Coimbra. The techniques used were mechanical, chemical (EDTA solution) and LASER (pulsed CO2 and Nd:YAG - Q-Switch). The chemical characterisation and the evaluation of the cleaning degree were done by transmission 57Fe Mössbauer spectroscopy. The results suggest that: the mechanical process of cleaning does not allow total removal of corrosion, reaching easily the substrate and so causing mechanical damage; the cleaning method using EDTA in confined environment and high controlled conditions, removes the corrosion products efficiently, without damaging the surface; and the cleaning methods using LASER although not achieving complete removal of corrosion, show clear characteristics of selectivity when acting on the corrosion layer or on the metal surface.
publishDate 2008
dc.date.none.fl_str_mv 2008-09-01
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://scielo.pt/scielo.php?script=sci_arttext&pid=S0870-11642008000300001
url http://scielo.pt/scielo.php?script=sci_arttext&pid=S0870-11642008000300001
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv http://scielo.pt/scielo.php?script=sci_arttext&pid=S0870-11642008000300001
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv LNEG - Laboratório Nacional de Energia e Geologia, I.P.
publisher.none.fl_str_mv LNEG - Laboratório Nacional de Energia e Geologia, I.P.
dc.source.none.fl_str_mv Corrosão e Protecção de Materiais v.27 n.3 2008
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
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