Influence of topography on plasma treated titanium surface wettability

dc.contributor.authorSilva, Marco Aurélio Medeiros da
dc.contributor.authorGuerra Neto, Custódio Leopoldino de Brito
dc.contributor.authorNunes Filho, Antônio
dc.contributor.authorFreitas, D.O.
dc.contributor.authorBraz, Danilo Cavalcante
dc.contributor.authorAlves Júnior, Clodomiro
dc.date.accessioned2020-07-13T16:59:32Z
dc.date.available2020-07-13T16:59:32Z
dc.date.issued2013
dc.description.resumoWith 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 H2pt_BR
dc.identifier.citationSILVA, 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.2013.08.001pt_BR
dc.identifier.doi10.1016/j.surfcoat.2013.08.001
dc.identifier.issn0257-8972
dc.identifier.urihttps://repositorio.ufrn.br/jspui/handle/123456789/29577
dc.languageenpt_BR
dc.publisherElsevierpt_BR
dc.rightsAttribution 3.0 Brazil*
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/br/*
dc.subjectTitaniumpt_BR
dc.subjectPlasma treatmentpt_BR
dc.subjectTitanium oxide reductionpt_BR
dc.subjectWettabilitypt_BR
dc.subjectRoughnesspt_BR
dc.subjectParameterpt_BR
dc.titleInfluence of topography on plasma treated titanium surface wettabilitypt_BR
dc.typearticlept_BR

Arquivos

Pacote Original

Agora exibindo 1 - 1 de 1
Carregando...
Imagem de Miniatura
Nome:
InfluenceOfTopographyOnPlasma_GuerraNeto_2013.pdf
Tamanho:
991.92 KB
Formato:
Adobe Portable Document Format
Carregando...
Imagem de Miniatura
Baixar

Licença do Pacote

Agora exibindo 1 - 1 de 1
Nenhuma Miniatura disponível
Nome:
license.txt
Tamanho:
1.45 KB
Formato:
Item-specific license agreed upon to submission
Nenhuma Miniatura disponível
Baixar