In-vitro corrosion resistance study of hot worked Ti-6Al-7Nb alloy in a isotonic medium
Autor(a) principal: | |
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Data de Publicação: | 2001 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Brazilian Journal of Chemical Engineering |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322001000100005 |
Resumo: | This investigation reports the results of linear polarization of hot upset Ti-6Al-7Nb bar samples. Current-potential curves recorded in Hanks solution were analyzed by correlating characteristics of passivation and microstructures obtained after processing. Results have shown that it is important to select temperature process and deformation rate as parameters when more noble potential values are required. Low deformation rate facilitates the formation of beta phase that is retained in the structure at room temperature shifting the corrosion potential to more positive values. However, samples hot compressed from 750°C to 1030 °C showed passive layer stability over a wide range of potentials extending from -0.15 V to 1.75 V vs SCE . Furthermore, passive films grown onto the Ti-6Al-7Nb samples surfaces have shown no sign of rupture for the processing conditions selected for this study. |
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Brazilian Journal of Chemical Engineering |
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In-vitro corrosion resistance study of hot worked Ti-6Al-7Nb alloy in a isotonic mediumtitanium alloysmetallic prothesiscorrosion of titanium alloysprosthetic materialsThis investigation reports the results of linear polarization of hot upset Ti-6Al-7Nb bar samples. Current-potential curves recorded in Hanks solution were analyzed by correlating characteristics of passivation and microstructures obtained after processing. Results have shown that it is important to select temperature process and deformation rate as parameters when more noble potential values are required. Low deformation rate facilitates the formation of beta phase that is retained in the structure at room temperature shifting the corrosion potential to more positive values. However, samples hot compressed from 750°C to 1030 °C showed passive layer stability over a wide range of potentials extending from -0.15 V to 1.75 V vs SCE . Furthermore, passive films grown onto the Ti-6Al-7Nb samples surfaces have shown no sign of rupture for the processing conditions selected for this study.Brazilian Society of Chemical Engineering2001-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322001000100005Brazilian Journal of Chemical Engineering v.18 n.1 2001reponame:Brazilian Journal of Chemical Engineeringinstname:Associação Brasileira de Engenharia Química (ABEQ)instacron:ABEQ10.1590/S0104-66322001000100005info:eu-repo/semantics/openAccessRosa,S.Barbosa,P.F.Button,S.T.Bertazzoli,R.eng2001-05-25T00:00:00Zoai:scielo:S0104-66322001000100005Revistahttps://www.scielo.br/j/bjce/https://old.scielo.br/oai/scielo-oai.phprgiudici@usp.br||rgiudici@usp.br1678-43830104-6632opendoar:2001-05-25T00:00Brazilian Journal of Chemical Engineering - Associação Brasileira de Engenharia Química (ABEQ)false |
dc.title.none.fl_str_mv |
In-vitro corrosion resistance study of hot worked Ti-6Al-7Nb alloy in a isotonic medium |
title |
In-vitro corrosion resistance study of hot worked Ti-6Al-7Nb alloy in a isotonic medium |
spellingShingle |
In-vitro corrosion resistance study of hot worked Ti-6Al-7Nb alloy in a isotonic medium Rosa,S. titanium alloys metallic prothesis corrosion of titanium alloys prosthetic materials |
title_short |
In-vitro corrosion resistance study of hot worked Ti-6Al-7Nb alloy in a isotonic medium |
title_full |
In-vitro corrosion resistance study of hot worked Ti-6Al-7Nb alloy in a isotonic medium |
title_fullStr |
In-vitro corrosion resistance study of hot worked Ti-6Al-7Nb alloy in a isotonic medium |
title_full_unstemmed |
In-vitro corrosion resistance study of hot worked Ti-6Al-7Nb alloy in a isotonic medium |
title_sort |
In-vitro corrosion resistance study of hot worked Ti-6Al-7Nb alloy in a isotonic medium |
author |
Rosa,S. |
author_facet |
Rosa,S. Barbosa,P.F. Button,S.T. Bertazzoli,R. |
author_role |
author |
author2 |
Barbosa,P.F. Button,S.T. Bertazzoli,R. |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Rosa,S. Barbosa,P.F. Button,S.T. Bertazzoli,R. |
dc.subject.por.fl_str_mv |
titanium alloys metallic prothesis corrosion of titanium alloys prosthetic materials |
topic |
titanium alloys metallic prothesis corrosion of titanium alloys prosthetic materials |
description |
This investigation reports the results of linear polarization of hot upset Ti-6Al-7Nb bar samples. Current-potential curves recorded in Hanks solution were analyzed by correlating characteristics of passivation and microstructures obtained after processing. Results have shown that it is important to select temperature process and deformation rate as parameters when more noble potential values are required. Low deformation rate facilitates the formation of beta phase that is retained in the structure at room temperature shifting the corrosion potential to more positive values. However, samples hot compressed from 750°C to 1030 °C showed passive layer stability over a wide range of potentials extending from -0.15 V to 1.75 V vs SCE . Furthermore, passive films grown onto the Ti-6Al-7Nb samples surfaces have shown no sign of rupture for the processing conditions selected for this study. |
publishDate |
2001 |
dc.date.none.fl_str_mv |
2001-03-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322001000100005 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322001000100005 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0104-66322001000100005 |
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 |
Brazilian Society of Chemical Engineering |
publisher.none.fl_str_mv |
Brazilian Society of Chemical Engineering |
dc.source.none.fl_str_mv |
Brazilian Journal of Chemical Engineering v.18 n.1 2001 reponame:Brazilian Journal of Chemical Engineering instname:Associação Brasileira de Engenharia Química (ABEQ) instacron:ABEQ |
instname_str |
Associação Brasileira de Engenharia Química (ABEQ) |
instacron_str |
ABEQ |
institution |
ABEQ |
reponame_str |
Brazilian Journal of Chemical Engineering |
collection |
Brazilian Journal of Chemical Engineering |
repository.name.fl_str_mv |
Brazilian Journal of Chemical Engineering - Associação Brasileira de Engenharia Química (ABEQ) |
repository.mail.fl_str_mv |
rgiudici@usp.br||rgiudici@usp.br |
_version_ |
1754213171066830848 |