Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/27399
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dc.contributor.authorAlves, C. F. Almeida-
dc.contributor.authorOliveira, F.-
dc.contributor.authorCarvalho, I.-
dc.contributor.authorPiedade, A. P.-
dc.contributor.authorCarvalho, S.-
dc.date.accessioned2014-10-27T15:16:03Z-
dc.date.available2014-10-27T15:16:03Z-
dc.date.issued2014-01-01-
dc.identifier.citationALVES, C. F. Almeida [et. al] - Influence of albumin on the tribological behavior of Ag–Ti (C, N) thin films for orthopedic implants. "Materials Science and Engineering: C". ISSN 0928-4931. Vol. 34 (2014) p. 22-28por
dc.identifier.issn0928-4931-
dc.identifier.urihttp://hdl.handle.net/10316/27399-
dc.description.abstractWith the increase of elderly population and the health problems arising nowadays, such as cancer, knee and hip joint prostheses are widely used worldwide. It is estimated that 20% of hip replacement surgeries simply fail after 5 years, due to wear loosening, instability and infection. In this paper it is reported the study of advanced materials with the ability to overcome some of these drawbacks. The development of ceramic coatings, based on carbonitrides of transition metals, such as TiCN, doped with silver, Ag, may represent an effective solution. Thin films of Ag–TiCN were produced by dc reactive magnetron sputtering with silver contents ranging from 4 to 8 at.%. The physical, chemical, structural, morphological/topographical, mechanical and tribological properties were evaluated. The tribological tests were performed in a unidirectional wear simulator, pin on disk, being the antagonists of a ceramic Al2O3 ball, and using simulate body fluids as lubricant. Hank's Balanced Salt Solution (HBSS) and bovine serum albumin (BSA) in HBSS were chosen, in order to evaluate the lubrication ability of the solution containing the protein, albumin. The results revealed that the coatings with Ag content ranging from 4 to 8 at.%, were the most promising, as the tribological properties were superior to the results reported by other authors, which also developed Ag–TiCN coatings containing similar Ag contents and using similar test conditions. The presence of albumin leads to a lower wear in all the test conditions, and this enhancement was higher in the hydrophobic surfaces.por
dc.language.isoengpor
dc.publisherElsevierpor
dc.rightsopenAccesspor
dc.subjectNanostructured coatingspor
dc.subjectXPSpor
dc.subjectHydrophobic surfacepor
dc.subjectLubrication limitpor
dc.subjectCritical wetting tensionpor
dc.titleInfluence of albumin on the tribological behavior of Ag–Ti (C, N) thin films for orthopedic implantspor
dc.typearticlepor
degois.publication.firstPage22por
degois.publication.lastPage28por
degois.publication.titleMaterials Science and Engineering: Cpor
dc.relation.publisherversionhttp://www.sciencedirect.com/science/article/pii/S0928493113005377por
dc.peerreviewedYespor
dc.identifier.doi10.1016/j.msec.2013.09.031-
degois.publication.volume34por
item.fulltextCom Texto completo-
item.grantfulltextopen-
item.languageiso639-1en-
crisitem.author.deptFaculdade de Ciências e Tecnologia, Universidade de Coimbra-
crisitem.author.parentdeptUniversidade de Coimbra-
crisitem.author.researchunitCentre for Mechanical Engineering-
crisitem.author.orcid0000-0002-1588-0640-
Appears in Collections:I&D CEMUC - Artigos em Revistas Internacionais
FCTUC Eng.Mecânica - Artigos em Revistas Internacionais
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