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dc.creatorBrizuela, Martaes
dc.creatorGarcía Luis, Albertoes
dc.creatorEndrino, José Luises
dc.creatorGago, Raúles
dc.creatorJusto Erbez, Ángel J.es
dc.creatorAbad Roldán, Manuel Davides
dc.creatorSánchez López, Juan Carloses
dc.date.accessioned2018-04-13T09:12:26Z
dc.date.available2018-04-13T09:12:26Z
dc.date.issued2012
dc.identifier.citationBrizuela, M., García Luis, A., Endrino, J.L., Gago, R., Justo Erbez, Á.J., Abad Roldán, M.D. y Sánchez López, J.C. (2012). Phase composition and tribomechanical properties of Ti–B–C nanocomposite coatings prepared by magnetron sputtering. Journal of Physics D. Applied physics, 45 (37), 1-26.
dc.identifier.issn0022-3727es
dc.identifier.urihttps://hdl.handle.net/11441/72739
dc.description.abstractProtective nanocomposite coatings based on hard ceramic phases (TiC, TiB2) combined with amorphous carbon (a-C) are of interest because of their adequate balance between mechanical and tribological performances. In this work, Ti–B–C nanocomposite coatings were prepared by co-sputtering of graphite and TiB2 targets. Varying the discharge power ratio applied to the graphite and TiB2 targets from 0 to 2, the a-C content in the coatings could be tuned from 0 to 60%, as observed by means of Raman and x-ray photoelectron spectroscopy (XPS). The microstructural characterization demonstrated a progressive decrease in crystallinity from an initial nanocrystalline (nc) TiB2-like structure to a distorted TiBxCy ternary compound with increasing C concentration. X-ray absorption near-edge structure measurements on the B K-edge helped to determine a hexagonal arrangement around the B atoms in the ternary TiBxCy phase. A fitting analysis of the C 1s XPS peak allowed us to evaluate the relative amount of a-C and TiBxCy components. A drastic change in hardness (from 52 to 13 GPa) and friction coefficient values (from 0.8 to 0.2) is noticed when moving from nc-TiB2 to TiBC/a-C nanocomposites. The fraction of a-C necessary to decrease the friction below 0.2 was found to be 45%. Raman observation of the wear tracks determined the presence of disordered sp2-bonded carbon phase associated with the diminution of the friction level.es
dc.description.sponsorshipEspaña Mec MAT2007-66881-C02-01/-02 MAT2011-29074-C02- 01/-02 FIS2009-12964-C05-04es
dc.description.sponsorshipCONSOLIDER FUNCOAT CSD2008-00023es
dc.formatapplication/pdfes
dc.language.isoenges
dc.publisherIOP Publishinges
dc.relation.ispartofJournal of Physics D. Applied physics, 45 (37), 1-26.
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internacional*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.titlePhase composition and tribomechanical properties of Ti–B–C nanocomposite coatings prepared by magnetron sputteringes
dc.typeinfo:eu-repo/semantics/articlees
dc.type.versioninfo:eu-repo/semantics/submittedVersiones
dc.rights.accessrightsinfo:eu-repo/semantics/openAccesses
dc.relation.projectIDCSD2008-00023es
dc.relation.projectIDAT2007-66881-C02-01/-02es
dc.relation.projectIDMAT2011-29074-C02- 01/-02es
dc.relation.projectIDFIS2009-12964-C05-04es
dc.relation.publisherversionhttp://dx.doi.org/10.1088/0022-3727/45/37/375401es
dc.identifier.doi10.1088/0022-3727/45/37/375401es
idus.format.extent26 p.es
dc.journaltitleJournal of Physics D. Applied physicses
dc.publication.volumen45es
dc.publication.issue37es
dc.publication.initialPage1es
dc.publication.endPage26es
dc.contributor.funderMinisterio de Educación y Ciencia (MEC). España

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