Memorias de investigación
Communications at congresses:
Morphology, microstructure and stress-state characterization of nanostructured tungsten
Year:2014

Research Areas
  • Engineering

Information
Abstract
tNanostructured tungsten (nanoW) coatings have been deposited by DC magnetron sputtering. First, theinfluence of the sputtering power on the adhesion of the coatings to the substrate was investigated bydepositing coatings at powers varying from 30 up to 220 W. Non-delaminated coatings were achievedat powers ?50 W. Second, the influence of coating thickness on the morphological, microstructural andmechanical properties was investigated for films deposited at 50 W with thicknesses varying from 30 nmup to ?4.0 ?m. SEM images reveal that all the films are highly compact, consisting of nanometer sizedcolumns that grow perpendicular to the substrate. XRD data evidence that films are monophasic, beingmade of pure ?-phase. All coatings show compressive stress and low micro-strain. Nanoindentation testsshow that coatings have a hardness higher than that reported for coarse grained W. No significant depend-ence of the previous properties on coating thickness was observed. Finally, the influence of the substrateon coatings properties was studied, by depositing a W coating at a power of 50 W on a commercial steelsubstrate: no significant dependence was found.
International
Si
Congress
NanoSpain 2014
960
Place
Madrid (Spain)
Reviewers
Si
ISBN/ISSN
0000-0000
Start Date
11/03/2014
End Date
14/03/2014
From page
1
To page
8
Proceedings
Participants
  • Autor: Nuria Gordillo Garcia UPM
  • Autor: Miguel Panizo Laiz UPM
  • Autor: E. Tejado SpaincDepartment of Materials Science, Research Centre on Safety and Durability of Structures and Materials (CISDEM), UPM-CSIC,
  • Autor: I. Fernández-Martínez SpaineInstituto de Energía Solar (IES), Universidad Politécnica de Madrid,, Instituto de Microelectrónica de Madrid, IMM-CNM-CSIC
  • Autor: Antonio Juan Rivera de Mena UPM
  • Autor: J.Y Pastor Department of Materials Science, Research Centre on Safety and Durability of Structures and Materials (CISDEM), UPM-CSIC
  • Autor: C. Gómez de Castro SpaingDepartamento de Física de Materiales, Facultad de CC. Químicas, Universidad Complutense de Madrid
  • Autor: C. del Río Departamento de Física de Materiales, Facultad de CC. Físicas, Universidad Complutense de Madrid
  • Autor: Jose Manuel Perlado Martin UPM
  • Autor: Raquel Gonzalez Arrabal UPM

Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Fusión Nuclear Inercial y Tecnología de fusión
  • Centro o Instituto I+D+i: Instituto de Fusión Nuclear
  • Departamento: Ingeniería Energética