Superficial modifications in TiO2 and Al2O3 ceramics

Detalhes bibliográficos
Autor(a) principal: Santos, Flávio De Paula [UNESP]
Data de Publicação: 2003
Outros Autores: Campos, Elson De [UNESP], Costa, Marcelo [UNESP], Melo, Francisco Cristóvão Lourenço, Honda, Roberto Yzumi [UNESP], Mota, Rogério Pinto [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1590/S1516-14392003000300009
http://hdl.handle.net/11449/212950
Resumo: The properties of hydrophilicity or hydrophobicity of materials are defined mainly, though not exclusively, by their composition, morphology and surface energy. In this work, titanium dioxide (TiO2) and aluminum oxide-alumina (Al2O3) ceramics prepared by uniaxial pressing were studied in terms of surface energy. The surfaces of these ceramics were treated with nitrogen plasma, using a stainless steel reactor excited by a 13,6 MHz radio frequency operating at 50 W input power and 13 Pa nitrogen pressure. The surface morphology was investigated by scanning electron microscopy (SEM) analysis. Surface energy and contact angle measurements were taken using a RAMÉ-HART goniometer. These measurements were taken as function of time, over a 21-day period. The contact angle and surface energy values were found to change by almost 34% in comparison to their initial values immediately following plasma treatment. Nonetheless, the hydrophilic character of the Al2O3 and TiO2 remained constant throughout the test period.
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spelling Superficial modifications in TiO2 and Al2O3 ceramicstitanium dioxidealuminasurface energycontact angleThe properties of hydrophilicity or hydrophobicity of materials are defined mainly, though not exclusively, by their composition, morphology and surface energy. In this work, titanium dioxide (TiO2) and aluminum oxide-alumina (Al2O3) ceramics prepared by uniaxial pressing were studied in terms of surface energy. The surfaces of these ceramics were treated with nitrogen plasma, using a stainless steel reactor excited by a 13,6 MHz radio frequency operating at 50 W input power and 13 Pa nitrogen pressure. The surface morphology was investigated by scanning electron microscopy (SEM) analysis. Surface energy and contact angle measurements were taken using a RAMÉ-HART goniometer. These measurements were taken as function of time, over a 21-day period. The contact angle and surface energy values were found to change by almost 34% in comparison to their initial values immediately following plasma treatment. Nonetheless, the hydrophilic character of the Al2O3 and TiO2 remained constant throughout the test period.Centro Técnico AeroespacialUniversidade Estadual Paulista, Department of Materials and TechnologyUniversidade Estadual Paulista, Department of Physics & ChemistryUniversidade Estadual Paulista, Department of Materials and TechnologyUniversidade Estadual Paulista, Department of Physics & ChemistryABM, ABC, ABPolCentro Técnico AeroespacialUniversidade Estadual Paulista (Unesp)Santos, Flávio De Paula [UNESP]Campos, Elson De [UNESP]Costa, Marcelo [UNESP]Melo, Francisco Cristóvão LourençoHonda, Roberto Yzumi [UNESP]Mota, Rogério Pinto [UNESP]2021-07-14T10:47:36Z2021-07-14T10:47:36Z2003-06info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article353-357application/pdfhttp://dx.doi.org/10.1590/S1516-14392003000300009Materials Research. São Carlos, SP, Brazil: ABM, ABC, ABPol, v. 6, n. 3, p. 353-357, 2003.1516-14391980-5373http://hdl.handle.net/11449/21295010.1590/S1516-14392003000300009S1516-14392003000300009S1516-14392003000300009.pdfSciELOreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengMaterials Researchinfo:eu-repo/semantics/openAccess2024-07-01T20:52:17Zoai:repositorio.unesp.br:11449/212950Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T17:45:24.883716Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Superficial modifications in TiO2 and Al2O3 ceramics
title Superficial modifications in TiO2 and Al2O3 ceramics
spellingShingle Superficial modifications in TiO2 and Al2O3 ceramics
Santos, Flávio De Paula [UNESP]
titanium dioxide
alumina
surface energy
contact angle
title_short Superficial modifications in TiO2 and Al2O3 ceramics
title_full Superficial modifications in TiO2 and Al2O3 ceramics
title_fullStr Superficial modifications in TiO2 and Al2O3 ceramics
title_full_unstemmed Superficial modifications in TiO2 and Al2O3 ceramics
title_sort Superficial modifications in TiO2 and Al2O3 ceramics
author Santos, Flávio De Paula [UNESP]
author_facet Santos, Flávio De Paula [UNESP]
Campos, Elson De [UNESP]
Costa, Marcelo [UNESP]
Melo, Francisco Cristóvão Lourenço
Honda, Roberto Yzumi [UNESP]
Mota, Rogério Pinto [UNESP]
author_role author
author2 Campos, Elson De [UNESP]
Costa, Marcelo [UNESP]
Melo, Francisco Cristóvão Lourenço
Honda, Roberto Yzumi [UNESP]
Mota, Rogério Pinto [UNESP]
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Centro Técnico Aeroespacial
Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Santos, Flávio De Paula [UNESP]
Campos, Elson De [UNESP]
Costa, Marcelo [UNESP]
Melo, Francisco Cristóvão Lourenço
Honda, Roberto Yzumi [UNESP]
Mota, Rogério Pinto [UNESP]
dc.subject.por.fl_str_mv titanium dioxide
alumina
surface energy
contact angle
topic titanium dioxide
alumina
surface energy
contact angle
description The properties of hydrophilicity or hydrophobicity of materials are defined mainly, though not exclusively, by their composition, morphology and surface energy. In this work, titanium dioxide (TiO2) and aluminum oxide-alumina (Al2O3) ceramics prepared by uniaxial pressing were studied in terms of surface energy. The surfaces of these ceramics were treated with nitrogen plasma, using a stainless steel reactor excited by a 13,6 MHz radio frequency operating at 50 W input power and 13 Pa nitrogen pressure. The surface morphology was investigated by scanning electron microscopy (SEM) analysis. Surface energy and contact angle measurements were taken using a RAMÉ-HART goniometer. These measurements were taken as function of time, over a 21-day period. The contact angle and surface energy values were found to change by almost 34% in comparison to their initial values immediately following plasma treatment. Nonetheless, the hydrophilic character of the Al2O3 and TiO2 remained constant throughout the test period.
publishDate 2003
dc.date.none.fl_str_mv 2003-06
2021-07-14T10:47:36Z
2021-07-14T10:47:36Z
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/S1516-14392003000300009
Materials Research. São Carlos, SP, Brazil: ABM, ABC, ABPol, v. 6, n. 3, p. 353-357, 2003.
1516-1439
1980-5373
http://hdl.handle.net/11449/212950
10.1590/S1516-14392003000300009
S1516-14392003000300009
S1516-14392003000300009.pdf
url http://dx.doi.org/10.1590/S1516-14392003000300009
http://hdl.handle.net/11449/212950
identifier_str_mv Materials Research. São Carlos, SP, Brazil: ABM, ABC, ABPol, v. 6, n. 3, p. 353-357, 2003.
1516-1439
1980-5373
10.1590/S1516-14392003000300009
S1516-14392003000300009
S1516-14392003000300009.pdf
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 353-357
application/pdf
dc.publisher.none.fl_str_mv ABM, ABC, ABPol
publisher.none.fl_str_mv ABM, ABC, ABPol
dc.source.none.fl_str_mv SciELO
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
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