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Memorias de investigación
Artículos en revistas:
Wettability modification of laser-fabricated hierarchical surface structures in Ti-6Al-4V titanium alloy
Año:2019
Áreas de investigación
  • Ingeniería mecánica, aeronaútica y naval
Datos
Descripción
In the present work, a study of laser-based surface structuring of aerospace-grade titanium alloy (Ti-6Al-4V) with subsequent ageing by employing two different storage methods is undertaken. The titanium alloy samples were patterned using UV-ns and IR-fs pulsed lasers in a two-step process to fabricate bio-inspired hierarchical structures. The resulting surface structure consisted in regular periodic square-shaped micro-pillars covered by 810?nm-periodic LIPSS. After the laser processing the samples were kept in two different storage conditions: exposed to ambient air and inside polyethylene bags. The polyethylene bags were found to be beneficial for the surface ageing of laser-fabricated titanium surfaces, increasing the ageing time when compared to ageing by exposure to ambient air. Hierarchical surface topographies exhibited higher water-repellency when compared to non-hierarchical structures. Especially, hierarchical structures reached a hydrophobic state with water contact angle over 160° after 3?weeks storage in polyethylene bags. The micro-structured surfaces were characterized by using confocal microscopy, scanning electron microscopy, static contact angle measurements and X-ray photoelectron spectroscopy.
Internacional
Si
JCR del ISI
Si
Título de la revista
Applied Surface Science
ISSN
0169-4332
Factor de impacto JCR
4,439
Información de impacto
Datos JCR del año 2017
Volumen
463
DOI
10.1016/j.apsusc.2018.09.012
Número de revista
Desde la página
838
Hasta la página
846
Mes
ENERO
Ranking
1/19 (Material science, coatings and films)
Esta actividad pertenece a memorias de investigación
Participantes
  • Autor: Daniel Huerta Murillo (UPM)
  • Autor: Antonio Garcia-Girón (UoB)
  • Autor: Jean-Michel Romano (UoB)
  • Autor: Jose Teixeira Cardoso (UPM)
  • Autor: Francisco Cordovilla Baro (UPM)
  • Autor: Marc Walker (UoW)
  • Autor: Stefan Dimov (UoB)
  • Autor: Jose Luis Ocaña Moreno (UPM)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Grupo de Investigación en Ingeniería y Aplicaciones del Láser
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