title: Development of Ti-C-N coatings with improved tribological behavior and antibacterial properties.
abstract: In artificial metallic joint implants, the failure is provoked by two effects in most of the cases: mass loss and wear debris removed due to tribological-corrosive effects on the implant alloy, and infections due to the presence of bacteria. In this work, several Ti-C-N corrosion and wear protective coatings were developed by Physical Vapour Deposition technology, and deposited on Ti6Al4V alloy. In order to provide the implant antibacterial properties, an additional silver top coating has been deposited. Tribological behavior was characterized through tribocorrosion and fretting tests. On the other hand, wettability tests were performed to study the grade of hydrophilicity/hydrophobia. Additionally, antibacterial properties were evaluated by means of bacterial adhesion tests. As a result of these characterization studies, the coating with the best performance was selected. The as-coated material includes excellent protection against tribocorrosion and fretting effects (in relation to the uncoated one) and the silver layer has been confirmed to exhibit antibacterial properties.
authors.affiliation: IK4-Tekniker, Parke Teknologikoa, C/ Iñaki Goenaga, 5, 20600 Eibar, Gipuzkoa, Spain. Electronic address: virginia.saenzdeviteri@tekniker.es.
authors.forename: Virginia
authors.initials: V
authors.lastname: Sáenz de Viteri
authors.affiliation: Departamento de Química Inorgánica, Facultad de Ciencia y Tecnología, Universidad del País Vasco, UPV/EHU, Apdo 644, 48080 Bilbao, Spain.
authors.forename: Gotzone
authors.initials: G
authors.lastname: Barandika
authors.affiliation: IK4-Tekniker, Parke Teknologikoa, C/ Iñaki Goenaga, 5, 20600 Eibar, Gipuzkoa, Spain.
authors.forename: Raquel
authors.initials: R
authors.lastname: Bayón
authors.affiliation: IK4-Tekniker, Parke Teknologikoa, C/ Iñaki Goenaga, 5, 20600 Eibar, Gipuzkoa, Spain.
authors.forename: Xana
authors.initials: X
authors.lastname: Fernández
authors.affiliation: IK4-Tekniker, Parke Teknologikoa, C/ Iñaki Goenaga, 5, 20600 Eibar, Gipuzkoa, Spain.
authors.forename: Iñigo
authors.initials: I
authors.lastname: Ciarsolo
authors.affiliation: IK4-Tekniker, Parke Teknologikoa, C/ Iñaki Goenaga, 5, 20600 Eibar, Gipuzkoa, Spain.
authors.forename: Amaya
authors.initials: A
authors.lastname: Igartua
authors.affiliation: Department of Clinical Microbiology, IIS-Fundación Jiménez Díaz, Av. Reyes Católicos 2, Madrid 28040, Spain.
authors.forename: Ramón
authors.initials: R
authors.lastname: Pérez Tanoira
authors.affiliation: Department of Clinical Microbiology, IIS-Fundación Jiménez Díaz, Av. Reyes Católicos 2, Madrid 28040, Spain.
authors.forename: Jaime Esteban
authors.initials: JE
authors.lastname: Moreno
authors.affiliation: Department of Clinical Microbiology, IIS-Fundación Jiménez Díaz, Av. Reyes Católicos 2, Madrid 28040, Spain.
authors.forename: Conchita Pérez-Jorge
authors.initials: CP
authors.lastname: Peremarch
mesh_terms: D000497:Alloys; D000900:Anti-Bacterial Agents / Q000737:chemistry* / Q000494:pharmacology*; D001422:Bacterial Adhesion / Q000187:drug effects; D002244:Carbon / Q000737:chemistry*; D003343:Corrosion; D006801:Humans; D057927:Hydrophobic and Hydrophilic Interactions; D008422:Materials Testing; D055595:Mechanical Phenomena; D009584:Nitrogen / Q000737:chemistry*; D013212:Staphylococcus epidermidis / Q000187:drug effects / Q000502:physiology; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry* / Q000494:pharmacology*
chemical_list: D000497:Alloys; D000900:Anti-Bacterial Agents; C031462:titanium alloy (TiAl6V4); D002244:Carbon; D014025:Titanium; D009584:Nitrogen
keywords: Bacterial adhesion; Fretting; Silver; Ti–C–N; Tribocorrosion