dc.creator | Brizuela, Marta | es |
dc.creator | García Luis, Alberto | es |
dc.creator | Endrino, José Luis | es |
dc.creator | Gago, Raúl | es |
dc.creator | Justo Erbez, Ángel J. | es |
dc.creator | Abad Roldán, Manuel David | es |
dc.creator | Sánchez López, Juan Carlos | es |
dc.date.accessioned | 2018-04-13T09:12:26Z | |
dc.date.available | 2018-04-13T09:12:26Z | |
dc.date.issued | 2012 | |
dc.identifier.citation | Brizuela, 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.issn | 0022-3727 | es |
dc.identifier.uri | https://hdl.handle.net/11441/72739 | |
dc.description.abstract | Protective 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.sponsorship | España Mec MAT2007-66881-C02-01/-02 MAT2011-29074-C02- 01/-02 FIS2009-12964-C05-04 | es |
dc.description.sponsorship | CONSOLIDER FUNCOAT CSD2008-00023 | es |
dc.format | application/pdf | es |
dc.language.iso | eng | es |
dc.publisher | IOP Publishing | es |
dc.relation.ispartof | Journal of Physics D. Applied physics, 45 (37), 1-26. | |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.title | Phase composition and tribomechanical properties of Ti–B–C nanocomposite coatings prepared by magnetron sputtering | es |
dc.type | info:eu-repo/semantics/article | es |
dcterms.identifier | https://ror.org/03yxnpp24 | |
dc.type.version | info:eu-repo/semantics/submittedVersion | es |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es |
dc.relation.projectID | CSD2008-00023 | es |
dc.relation.projectID | AT2007-66881-C02-01/-02 | es |
dc.relation.projectID | MAT2011-29074-C02- 01/-02 | es |
dc.relation.projectID | FIS2009-12964-C05-04 | es |
dc.relation.publisherversion | http://dx.doi.org/10.1088/0022-3727/45/37/375401 | es |
dc.identifier.doi | 10.1088/0022-3727/45/37/375401 | es |
idus.format.extent | 26 p. | es |
dc.journaltitle | Journal of Physics D. Applied physics | es |
dc.publication.volumen | 45 | es |
dc.publication.issue | 37 | es |
dc.publication.initialPage | 1 | es |
dc.publication.endPage | 26 | es |
dc.contributor.funder | Ministerio de Educación y Ciencia (MEC). España | |