Morphological and microstructural characterization of nanostructured pure a-phase W coatings on a wide thickness range

Gordillo Garcia, Nuria and Panizo Laíz, Miguel and Tejado Garrido, Elena María and Fernández-Martínez, I. and Rivera, A. and Pastor Caño, José Ygnacio and Gómez de Castro, C. and Río, J. del and Perlado Martín, José Manuel and González Arrabal, Raquel (2014). Morphological and microstructural characterization of nanostructured pure a-phase W coatings on a wide thickness range. "Applied Surface Science", v. 316 ; pp. 1-8. ISSN 0169-4332. https://doi.org/10.1016/j.apsusc.2014.07.061.

Description

Title: Morphological and microstructural characterization of nanostructured pure a-phase W coatings on a wide thickness range
Author/s:
  • Gordillo Garcia, Nuria
  • Panizo Laíz, Miguel
  • Tejado Garrido, Elena María
  • Fernández-Martínez, I.
  • Rivera, A.
  • Pastor Caño, José Ygnacio
  • Gómez de Castro, C.
  • Río, J. del
  • Perlado Martín, José Manuel
  • González Arrabal, Raquel
Item Type: Article
Título de Revista/Publicación: Applied Surface Science
Date: October 2014
ISSN: 0169-4332
Volume: 316
Subjects:
Freetext Keywords: Sputter deposition; Nanostructured tungsten; Micro-/macro-stresses; Nanoindentation
Faculty: E.T.S.I. Industriales (UPM)
Department: Ingeniería Energética
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Nanostructured tungsten (nanoW) coatings have been deposited by DC magnetron sputtering. First, the influence of the sputtering power on the adhesion of the coatings to the substrate was investigated by depositing coatings at powers varying from 30 up to 220 W. Non-delaminated coatings were achieved at powers ≤50 W. Second, the influence of coating thickness on the morphological, microstructural and mechanical properties was investigated for films deposited at 50 W with thicknesses varying from 30 nm up to ∼4.0 um. SEM images reveal that all the films are highly compact, consisting of nanometer sized columns that grow perpendicular to the substrate. XRD data evidence that films are monophasic, being made of pure a-phase. All coatings show compressive stress and low micro-strain. Nanoindentation tests show that coatings have a hardness higher than that reported for coarse grained W. No significant dependence of the previous properties on coating thickness was observed. Finally, the influence of the substrate on coatings properties was studied, by depositing a W coating at a power of 50 W on a commercial steel substrate: no significant dependence was found.

Funding Projects

TypeCodeAcronymLeaderTitle
Madrid Regional GovernmentS-S2009/MAT-1585UnspecifiedUnspecifiedUnspecified
Government of SpainENE2012-39787-C06-0XXUnspecifiedUnspecifiedIONES LIGEROS Y RADIACION EN MATERIALES PARA FUSION
Government of SpainMAT2012-38541-C02-01UnspecifiedUnspecifiedDESARROLLO Y CARACTERIZACION MECANICA DE MATERIALES NANOESTRUCTURADOS PARA OPERACION BAJO CONDICIONES EXTREMAS PARA SISTEMAS DE GENERACION DE ENERGIA: COMPORTAMIENTO MECANICA
Government of SpainMAT2012-38541-C02-02UnspecifiedUnspecifiedUnspecified

More information

Item ID: 52337
DC Identifier: http://oa.upm.es/52337/
OAI Identifier: oai:oa.upm.es:52337
DOI: 10.1016/j.apsusc.2014.07.061
Official URL: https://www.sciencedirect.com/science/article/pii/S016943321401589X?via%3Dihub
Deposited by: Memoria Investigacion
Deposited on: 25 Sep 2018 15:38
Last Modified: 25 Sep 2018 15:38
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