title: Influence of polyetheretherketone coatings on the Ti-13Nb-13Zr titanium alloy's bio-tribological properties and corrosion resistance.
abstract: Polyetheretherketone (PEEK) coatings of 70-90μm thick were electrophoretically deposited from a suspension of PEEK powder in ethanol on near-β Ti-13Nb-13Zr titanium alloy. In order to produce good quality coatings, the composition of the suspension (pH) and optimized deposition parameters (applied voltage and time) were experimentally selected. The as-deposited coatings exhibited the uniform distribution of PEEK powders on the substrate. The subsequent annealing at a temperature above the PEEK melting point enabled homogeneous, semi-crystalline coatings with spherulitic morphology to be produced. A micro-scratch test showed that the coatings exhibited very good adhesion to the titanium alloy substrate. Coating delamination was not observed even up to a maximal load of 30N. The PEEK coatings significantly improved the tribological properties of the Ti-13Nb-13Zr alloy. The coefficient of friction was reduced from 0.55 for an uncoated alloy to 0.40 and 0.12 for a coated alloy in a dry sliding and sliding in Ringer's solution, respectively. The PEEK coatings exhibited excellent wear resistance in both contact conditions. Their wear rate was more than 200 times smaller compared with the wear rate of the uncoated Ti-13Nb-13Zr alloy. The obtained results indicate that electrophoretically deposited PEEK coatings on the near-β titanium alloy exhibit very useful properties for their prospective tribological applications in medicine.
authors.affiliation: AGH University of Science and Technology, Faculty of Metals Engineering and Industrial Computer Science, Czarnowiejska 66, 30-054 Kraków, Poland.
authors.forename: Anita
authors.initials: A
authors.lastname: Sak
authors.affiliation: AGH University of Science and Technology, Faculty of Metals Engineering and Industrial Computer Science, Czarnowiejska 66, 30-054 Kraków, Poland. Electronic address: tmoskale@agh.edu.pl.
authors.forename: Tomasz
authors.initials: T
authors.lastname: Moskalewicz
authors.affiliation: AGH University of Science and Technology, Faculty of Mechanical Engineering and Robotics, Mickiewicza Av. 30, 30-059 Kraków, Poland.
authors.forename: Sławomir
authors.initials: S
authors.lastname: Zimowski
authors.affiliation: AGH University of Science and Technology, Faculty of Metals Engineering and Industrial Computer Science, Czarnowiejska 66, 30-054 Kraków, Poland.
authors.forename: Łukasz
authors.initials: Ł
authors.lastname: Cieniek
authors.affiliation: AGH University of Science and Technology, Faculty of Metals Engineering and Industrial Computer Science, Czarnowiejska 66, 30-054 Kraków, Poland.
authors.forename: Beata
authors.initials: B
authors.lastname: Dubiel
authors.affiliation: AGH University of Science and Technology, Faculty of Metals Engineering and Industrial Computer Science, Czarnowiejska 66, 30-054 Kraków, Poland.
authors.forename: Agnieszka
authors.initials: A
authors.lastname: Radziszewska
authors.affiliation: AGH University of Science and Technology, Faculty of Mechanical Engineering and Robotics, Mickiewicza Av. 30, 30-059 Kraków, Poland.
authors.forename: Marcin
authors.initials: M
authors.lastname: Kot
authors.affiliation: AGH University of Science and Technology, Faculty of Foundry Engineering, Reymonta 23, 30-059 Kraków, Poland.
authors.forename: Alicja
authors.initials: A
authors.lastname: Łukaszczyk
mesh_terms: D001577:Benzophenones; D001672:Biocompatible Materials / Q000737:chemistry*; D003343:Corrosion; D058266:Dielectric Spectroscopy; D007659:Ketones / Q000737:chemistry*; D018625:Microscopy, Atomic Force; D008855:Microscopy, Electron, Scanning; D011092:Polyethylene Glycols / Q000737:chemistry*; D011108:Polymers; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D001577:Benzophenones; D001672:Biocompatible Materials; D007659:Ketones; D011108:Polymers; C090153:titanium alloy (TiNb13Zr13); C063834:polyetheretherketone; D011092:Polyethylene Glycols; D014025:Titanium
keywords: Biomaterials; Corrosion resistance; Lubricated contact; Ringer's solution; Surface modification; Wear resistance