Morphological and structural variations in anodic films grown on polished and electropolished titanium substrates
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/1980-5373-MR-2019-0362 http://hdl.handle.net/11449/201614 |
Resumo: | The objective of this work was to investigate the effects of anodization parameters on the anatase phase formation of titanium oxide films, which have been grown on both electropolished and nonelectropolished titanium surfaces by direct current anodization in 0.25 and 2.5 mol L-1 H3PO4 solutions, respectively, at three anodization times (3, 6 and 12 hours). SEM, Raman spectroscopy and X-ray diffraction techniques revealed the characteristics of anodic films. Films were characterized according to presence of crystalline nuclei of anatase phase on an amorphous matrix. It was found that differences in size, shape and distribution of crystalline grains on anodized surfaces are affected by the type of polishing given to substrates. The particles on electropolished surfaces were grown in well-defined layers following cone-shaped grains. On the other hand, the crystallization phenomenon on nonelectropolished substrates has led to the appearance of smaller particle sizes and a larger number of particles distributed along the surface as well. |
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Morphological and structural variations in anodic films grown on polished and electropolished titanium substratesAnataseAnodizationElectropolishingTitaniumThe objective of this work was to investigate the effects of anodization parameters on the anatase phase formation of titanium oxide films, which have been grown on both electropolished and nonelectropolished titanium surfaces by direct current anodization in 0.25 and 2.5 mol L-1 H3PO4 solutions, respectively, at three anodization times (3, 6 and 12 hours). SEM, Raman spectroscopy and X-ray diffraction techniques revealed the characteristics of anodic films. Films were characterized according to presence of crystalline nuclei of anatase phase on an amorphous matrix. It was found that differences in size, shape and distribution of crystalline grains on anodized surfaces are affected by the type of polishing given to substrates. The particles on electropolished surfaces were grown in well-defined layers following cone-shaped grains. On the other hand, the crystallization phenomenon on nonelectropolished substrates has led to the appearance of smaller particle sizes and a larger number of particles distributed along the surface as well.Departamento de Física e Química Faculdade de Engenharia Universidade Estadual Paulista Julio de Mesquita Filho - UNESPDepartamento de Física e Química Faculdade de Engenharia Universidade Estadual Paulista Julio de Mesquita Filho - UNESPUniversidade Estadual Paulista (Unesp)Da Silva Palma, Dener Pedro [UNESP]Nakazato, Roberto Zenhei [UNESP]Codaro, Eduardo Norberto [UNESP]Acciari, Heloisa Andréa [UNESP]2020-12-12T02:37:16Z2020-12-12T02:37:16Z2019-11-11info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://dx.doi.org/10.1590/1980-5373-MR-2019-0362Materials Research, v. 22.1980-53731516-1439http://hdl.handle.net/11449/20161410.1590/1980-5373-MR-2019-0362S1516-143920190007002572-s2.0-85081584480S1516-14392019000700257.pdf87991910784514670000-0001-7897-1905Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengMaterials Researchinfo:eu-repo/semantics/openAccess2023-12-15T06:16:52Zoai:repositorio.unesp.br:11449/201614Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-12-15T06:16:52Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Morphological and structural variations in anodic films grown on polished and electropolished titanium substrates |
title |
Morphological and structural variations in anodic films grown on polished and electropolished titanium substrates |
spellingShingle |
Morphological and structural variations in anodic films grown on polished and electropolished titanium substrates Da Silva Palma, Dener Pedro [UNESP] Anatase Anodization Electropolishing Titanium |
title_short |
Morphological and structural variations in anodic films grown on polished and electropolished titanium substrates |
title_full |
Morphological and structural variations in anodic films grown on polished and electropolished titanium substrates |
title_fullStr |
Morphological and structural variations in anodic films grown on polished and electropolished titanium substrates |
title_full_unstemmed |
Morphological and structural variations in anodic films grown on polished and electropolished titanium substrates |
title_sort |
Morphological and structural variations in anodic films grown on polished and electropolished titanium substrates |
author |
Da Silva Palma, Dener Pedro [UNESP] |
author_facet |
Da Silva Palma, Dener Pedro [UNESP] Nakazato, Roberto Zenhei [UNESP] Codaro, Eduardo Norberto [UNESP] Acciari, Heloisa Andréa [UNESP] |
author_role |
author |
author2 |
Nakazato, Roberto Zenhei [UNESP] Codaro, Eduardo Norberto [UNESP] Acciari, Heloisa Andréa [UNESP] |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Da Silva Palma, Dener Pedro [UNESP] Nakazato, Roberto Zenhei [UNESP] Codaro, Eduardo Norberto [UNESP] Acciari, Heloisa Andréa [UNESP] |
dc.subject.por.fl_str_mv |
Anatase Anodization Electropolishing Titanium |
topic |
Anatase Anodization Electropolishing Titanium |
description |
The objective of this work was to investigate the effects of anodization parameters on the anatase phase formation of titanium oxide films, which have been grown on both electropolished and nonelectropolished titanium surfaces by direct current anodization in 0.25 and 2.5 mol L-1 H3PO4 solutions, respectively, at three anodization times (3, 6 and 12 hours). SEM, Raman spectroscopy and X-ray diffraction techniques revealed the characteristics of anodic films. Films were characterized according to presence of crystalline nuclei of anatase phase on an amorphous matrix. It was found that differences in size, shape and distribution of crystalline grains on anodized surfaces are affected by the type of polishing given to substrates. The particles on electropolished surfaces were grown in well-defined layers following cone-shaped grains. On the other hand, the crystallization phenomenon on nonelectropolished substrates has led to the appearance of smaller particle sizes and a larger number of particles distributed along the surface as well. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-11-11 2020-12-12T02:37:16Z 2020-12-12T02:37:16Z |
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://dx.doi.org/10.1590/1980-5373-MR-2019-0362 Materials Research, v. 22. 1980-5373 1516-1439 http://hdl.handle.net/11449/201614 10.1590/1980-5373-MR-2019-0362 S1516-14392019000700257 2-s2.0-85081584480 S1516-14392019000700257.pdf 8799191078451467 0000-0001-7897-1905 |
url |
http://dx.doi.org/10.1590/1980-5373-MR-2019-0362 http://hdl.handle.net/11449/201614 |
identifier_str_mv |
Materials Research, v. 22. 1980-5373 1516-1439 10.1590/1980-5373-MR-2019-0362 S1516-14392019000700257 2-s2.0-85081584480 S1516-14392019000700257.pdf 8799191078451467 0000-0001-7897-1905 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Materials Research |
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.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1797790007867473920 |