Influence of topography on plasma treated titanium surface wettability

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With the aim of studying the topographic influence on wettability of plasma-treated surfaces, we used eighteen commercially pure titanium (CP Titanium) disks (grade II), 10 mm in diameter and 1 mm thick, and in atmospheres of Argon (Ar), Hydrogen H2 and Ar–H2. These samples were submitted to plasma...

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Principais autores: Silva, Marco Aurélio Medeiros da, Guerra Neto, Custódio Leopoldino de Brito, Nunes Filho, Antônio, Freitas, D.O., Braz, Danilo Cavalcante, Alves Júnior, Clodomiro
Formato: article
Idioma:English
Publicado em: Elsevier
Assuntos:
Titanium
Plasma treatment
Titanium oxide reduction
Wettability
Roughness
Parameter
Endereço do item:https://repositorio.ufrn.br/jspui/handle/123456789/29577
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spelling ri-123456789-295772020-07-19T07:45:26Z Influence of topography on plasma treated titanium surface wettability Silva, Marco Aurélio Medeiros da Guerra Neto, Custódio Leopoldino de Brito Nunes Filho, Antônio Freitas, D.O. Braz, Danilo Cavalcante Alves Júnior, Clodomiro Titanium Plasma treatment Titanium oxide reduction Wettability Roughness Parameter With the aim of studying the topographic influence on wettability of plasma-treated surfaces, we used eighteen commercially pure titanium (CP Titanium) disks (grade II), 10 mm in diameter and 1 mm thick, and in atmospheres of Argon (Ar), Hydrogen H2 and Ar–H2. These samples were submitted to plasma produced by hollow cathode discharge (HCD) for 20 and 60 min at a voltage of 500 V and pressure of 220 Pa. After pre-treatment, the state of the sample surfaces was assessed for surface phases with grazing incidence X-ray diffraction (GIXRD), and XPS (X-ray photoelectron spectroscopy), evaluated by atomic force microscopy (AFM) and wettability, using the sessile drop test. It was found that all the conditions were effective in reducing oxide, resulting in different wettability values. Correlation between average roughness (Ra) parameters and the ratio between maximum peak height and average distance between the highest peak and lowest valley (Rp/Rz) and wettability for the different treatment conditions were analyzed. Given the results obtained, it was concluded that Ra and Rp/Rz are not appropriate for correlating with wettability and it is suggested that a new topographic parameter be adopted for the Cassie–Baxter equation. XPS analysis showed that reduction efficacy was greater for the Ar–H2 mixture, followed by Ar and H2 2020-07-13T16:59:32Z 2020-07-13T16:59:32Z 2013 article SILVA, M. A. M.; GUERRA NETO, C. L. B.; NUNES FILHO, A.; FREITAS, D. O.; C.BRAZ, D. ; ALVES JUNIOR, C.. Influence of topography on plasma treated titanium surface wettability. Surface and Coatings Technology, v. 235, p. 447-453, 2013. Disponível em: https://www.sciencedirect.com/science/article/abs/pii/S0257897213007536. Acesso em: 12 jul. 2020. https://doi.org/10.1016/j.surfcoat.2013.08.001 0257-8972 https://repositorio.ufrn.br/jspui/handle/123456789/29577 10.1016/j.surfcoat.2013.08.001 en Attribution 3.0 Brazil http://creativecommons.org/licenses/by/3.0/br/ application/pdf Elsevier
institution Repositório Institucional
collection RI - UFRN
language English
topic Titanium
Plasma treatment
Titanium oxide reduction
Wettability
Roughness
Parameter
spellingShingle Titanium
Plasma treatment
Titanium oxide reduction
Wettability
Roughness
Parameter
Silva, Marco Aurélio Medeiros da
Guerra Neto, Custódio Leopoldino de Brito
Nunes Filho, Antônio
Freitas, D.O.
Braz, Danilo Cavalcante
Alves Júnior, Clodomiro
Influence of topography on plasma treated titanium surface wettability
description With the aim of studying the topographic influence on wettability of plasma-treated surfaces, we used eighteen commercially pure titanium (CP Titanium) disks (grade II), 10 mm in diameter and 1 mm thick, and in atmospheres of Argon (Ar), Hydrogen H2 and Ar–H2. These samples were submitted to plasma produced by hollow cathode discharge (HCD) for 20 and 60 min at a voltage of 500 V and pressure of 220 Pa. After pre-treatment, the state of the sample surfaces was assessed for surface phases with grazing incidence X-ray diffraction (GIXRD), and XPS (X-ray photoelectron spectroscopy), evaluated by atomic force microscopy (AFM) and wettability, using the sessile drop test. It was found that all the conditions were effective in reducing oxide, resulting in different wettability values. Correlation between average roughness (Ra) parameters and the ratio between maximum peak height and average distance between the highest peak and lowest valley (Rp/Rz) and wettability for the different treatment conditions were analyzed. Given the results obtained, it was concluded that Ra and Rp/Rz are not appropriate for correlating with wettability and it is suggested that a new topographic parameter be adopted for the Cassie–Baxter equation. XPS analysis showed that reduction efficacy was greater for the Ar–H2 mixture, followed by Ar and H2
format article
author Silva, Marco Aurélio Medeiros da
Guerra Neto, Custódio Leopoldino de Brito
Nunes Filho, Antônio
Freitas, D.O.
Braz, Danilo Cavalcante
Alves Júnior, Clodomiro
author_facet Silva, Marco Aurélio Medeiros da
Guerra Neto, Custódio Leopoldino de Brito
Nunes Filho, Antônio
Freitas, D.O.
Braz, Danilo Cavalcante
Alves Júnior, Clodomiro
author_sort Silva, Marco Aurélio Medeiros da
title Influence of topography on plasma treated titanium surface wettability
title_short Influence of topography on plasma treated titanium surface wettability
title_full Influence of topography on plasma treated titanium surface wettability
title_fullStr Influence of topography on plasma treated titanium surface wettability
title_full_unstemmed Influence of topography on plasma treated titanium surface wettability
title_sort influence of topography on plasma treated titanium surface wettability
publisher Elsevier
publishDate 2020
url https://repositorio.ufrn.br/jspui/handle/123456789/29577
work_keys_str_mv AT silvamarcoaureliomedeirosda influenceoftopographyonplasmatreatedtitaniumsurfacewettability
AT guerranetocustodioleopoldinodebrito influenceoftopographyonplasmatreatedtitaniumsurfacewettability
AT nunesfilhoantonio influenceoftopographyonplasmatreatedtitaniumsurfacewettability
AT freitasdo influenceoftopographyonplasmatreatedtitaniumsurfacewettability
AT brazdanilocavalcante influenceoftopographyonplasmatreatedtitaniumsurfacewettability
AT alvesjuniorclodomiro influenceoftopographyonplasmatreatedtitaniumsurfacewettability
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