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Descripción
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| 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. | |
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Internacional
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Si |
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Nombre congreso
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NanoSpain 2014 |
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Tipo de participación
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960 |
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Lugar del congreso
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Madrid (Spain) |
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Revisores
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Si |
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ISBN o ISSN
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0000-0000 |
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DOI
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Fecha inicio congreso
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11/03/2014 |
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Fecha fin congreso
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14/03/2014 |
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Desde la página
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1 |
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Hasta la página
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8 |
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Título de las actas
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Proceedings |