A chemical patterning approach of dense and porous titanium surfaces by using a combination of concentrated acid and oxidant
Autor(a) principal: | |
---|---|
Data de Publicação: | 2021 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Matéria (Rio de Janeiro. Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762021000200330 |
Resumo: | ABSTRACT Commercially dense pure titanium sheets and porous titanium samples processed by powder metallurgy were treated with a mixture consisting of equal volumes of H2SO4 and H2O2 for 2 or 4 hours. Characterization was performed by scanning electron microscopy, energy dispersive X-ray spectroscopy, confocal scanning optical microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. The analyses showed that the chemical patterning approach using a combination of concentrated acid and oxidant was able to generate a nanotexture on dense and porous titanium surfaces. In addition, the treated samples presented an oxide layer consisting predominantly of titanium dioxide with negative charge conferred by the presence of hydroxyl groups, which is an important factor that favors apatite nucleation and protein adsorption. It was also observed that oxide formation was more effective on porous samples than on dense samples, which can be explained by the higher surface area intrinsic to porous media. Finally, the findings indicated that both treatment times promoted similar modifications in surface properties, such as nanotexture and chemical composition, suggesting that the time of 2 hours were enough to induce the surface alterations at the nanoscale. |
id |
RLAM-1_ee5425b0b701f0a439e259d39ce7db4e |
---|---|
oai_identifier_str |
oai:scielo:S1517-70762021000200330 |
network_acronym_str |
RLAM-1 |
network_name_str |
Matéria (Rio de Janeiro. Online) |
repository_id_str |
|
spelling |
A chemical patterning approach of dense and porous titanium surfaces by using a combination of concentrated acid and oxidanttitaniumsurface modificationchemical oxidationpowder metallurgyABSTRACT Commercially dense pure titanium sheets and porous titanium samples processed by powder metallurgy were treated with a mixture consisting of equal volumes of H2SO4 and H2O2 for 2 or 4 hours. Characterization was performed by scanning electron microscopy, energy dispersive X-ray spectroscopy, confocal scanning optical microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. The analyses showed that the chemical patterning approach using a combination of concentrated acid and oxidant was able to generate a nanotexture on dense and porous titanium surfaces. In addition, the treated samples presented an oxide layer consisting predominantly of titanium dioxide with negative charge conferred by the presence of hydroxyl groups, which is an important factor that favors apatite nucleation and protein adsorption. It was also observed that oxide formation was more effective on porous samples than on dense samples, which can be explained by the higher surface area intrinsic to porous media. Finally, the findings indicated that both treatment times promoted similar modifications in surface properties, such as nanotexture and chemical composition, suggesting that the time of 2 hours were enough to induce the surface alterations at the nanoscale.Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiroem cooperação com a Associação Brasileira do Hidrogênio, ABH22021-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762021000200330Matéria (Rio de Janeiro) v.26 n.2 2021reponame:Matéria (Rio de Janeiro. Online)instname:Matéria (Rio de Janeiro. Online)instacron:RLAM10.1590/s1517-707620210002.1284info:eu-repo/semantics/openAccessRibeiro,Alexandre AntunesSilva,Rodrigo Sacramento daWay,Débora VieiraAlves,Lais de SouzaSilveira,Erika BatistaMendes,Fabiana Magalhães TeixeiraOliveira,Marize Varella deeng2021-05-21T00:00:00Zoai:scielo:S1517-70762021000200330Revistahttp://www.materia.coppe.ufrj.br/https://old.scielo.br/oai/scielo-oai.php||materia@labh2.coppe.ufrj.br1517-70761517-7076opendoar:2021-05-21T00:00Matéria (Rio de Janeiro. Online) - Matéria (Rio de Janeiro. Online)false |
dc.title.none.fl_str_mv |
A chemical patterning approach of dense and porous titanium surfaces by using a combination of concentrated acid and oxidant |
title |
A chemical patterning approach of dense and porous titanium surfaces by using a combination of concentrated acid and oxidant |
spellingShingle |
A chemical patterning approach of dense and porous titanium surfaces by using a combination of concentrated acid and oxidant Ribeiro,Alexandre Antunes titanium surface modification chemical oxidation powder metallurgy |
title_short |
A chemical patterning approach of dense and porous titanium surfaces by using a combination of concentrated acid and oxidant |
title_full |
A chemical patterning approach of dense and porous titanium surfaces by using a combination of concentrated acid and oxidant |
title_fullStr |
A chemical patterning approach of dense and porous titanium surfaces by using a combination of concentrated acid and oxidant |
title_full_unstemmed |
A chemical patterning approach of dense and porous titanium surfaces by using a combination of concentrated acid and oxidant |
title_sort |
A chemical patterning approach of dense and porous titanium surfaces by using a combination of concentrated acid and oxidant |
author |
Ribeiro,Alexandre Antunes |
author_facet |
Ribeiro,Alexandre Antunes Silva,Rodrigo Sacramento da Way,Débora Vieira Alves,Lais de Souza Silveira,Erika Batista Mendes,Fabiana Magalhães Teixeira Oliveira,Marize Varella de |
author_role |
author |
author2 |
Silva,Rodrigo Sacramento da Way,Débora Vieira Alves,Lais de Souza Silveira,Erika Batista Mendes,Fabiana Magalhães Teixeira Oliveira,Marize Varella de |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Ribeiro,Alexandre Antunes Silva,Rodrigo Sacramento da Way,Débora Vieira Alves,Lais de Souza Silveira,Erika Batista Mendes,Fabiana Magalhães Teixeira Oliveira,Marize Varella de |
dc.subject.por.fl_str_mv |
titanium surface modification chemical oxidation powder metallurgy |
topic |
titanium surface modification chemical oxidation powder metallurgy |
description |
ABSTRACT Commercially dense pure titanium sheets and porous titanium samples processed by powder metallurgy were treated with a mixture consisting of equal volumes of H2SO4 and H2O2 for 2 or 4 hours. Characterization was performed by scanning electron microscopy, energy dispersive X-ray spectroscopy, confocal scanning optical microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. The analyses showed that the chemical patterning approach using a combination of concentrated acid and oxidant was able to generate a nanotexture on dense and porous titanium surfaces. In addition, the treated samples presented an oxide layer consisting predominantly of titanium dioxide with negative charge conferred by the presence of hydroxyl groups, which is an important factor that favors apatite nucleation and protein adsorption. It was also observed that oxide formation was more effective on porous samples than on dense samples, which can be explained by the higher surface area intrinsic to porous media. Finally, the findings indicated that both treatment times promoted similar modifications in surface properties, such as nanotexture and chemical composition, suggesting that the time of 2 hours were enough to induce the surface alterations at the nanoscale. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-01-01 |
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=S1517-70762021000200330 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762021000200330 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/s1517-707620210002.1284 |
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 |
Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiro em cooperação com a Associação Brasileira do Hidrogênio, ABH2 |
publisher.none.fl_str_mv |
Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiro em cooperação com a Associação Brasileira do Hidrogênio, ABH2 |
dc.source.none.fl_str_mv |
Matéria (Rio de Janeiro) v.26 n.2 2021 reponame:Matéria (Rio de Janeiro. Online) instname:Matéria (Rio de Janeiro. Online) instacron:RLAM |
instname_str |
Matéria (Rio de Janeiro. Online) |
instacron_str |
RLAM |
institution |
RLAM |
reponame_str |
Matéria (Rio de Janeiro. Online) |
collection |
Matéria (Rio de Janeiro. Online) |
repository.name.fl_str_mv |
Matéria (Rio de Janeiro. Online) - Matéria (Rio de Janeiro. Online) |
repository.mail.fl_str_mv |
||materia@labh2.coppe.ufrj.br |
_version_ |
1752126694244745216 |