title: Tribocorrosion behavior of beta titanium biomedical alloys in phosphate buffer saline solution.
abstract: The tribo-electrochemical behavior of different β titanium alloys for biomedical applications sintered by powder metallurgy has been investigated. Different mechanical, electrochemical and optical techniques were used to study the influence of the chemical composition, Sn content, and the electrochemical conditions on the tribocorrosion behavior of those alloys Ti30NbxSn alloys (where "x" is the weight percentage of Sn content, 2% and 4%). Sn content increases the active and passive dissolution rate of the titanium alloys, thus increasing the mechanically activated corrosion under tribocorrosion conditions. It also increases the mechanical wear of the alloy. Prevailing electrochemical conditions between -1 and 2V influences the wear accelerated corrosion by increasing it with the applied potential and slightly increases the mechanical wear of Ti30Nb4Sn. Wear accelerated corrosion can be predicted by existing models as a function of electrochemical and mechanical parameters of the titanium alloys.
authors.affiliation: Institute for Industrial, Radiophysical and Environmental Safety, Universitat Politècnica de València, P.O. Box 22012, E-46071, Valencia, Spain.
authors.forename: V Guiñón
authors.initials: VG
authors.lastname: Pina
authors.affiliation: Institute for Industrial, Radiophysical and Environmental Safety, Universitat Politècnica de València, P.O. Box 22012, E-46071, Valencia, Spain.
authors.forename: A
authors.initials: A
authors.lastname: Dalmau
authors.affiliation: Institute of Materials Technology, Universitat Politècnica de València, P.O. Box 22012, E-46071, Valencia, Spain.
authors.forename: F
authors.initials: F
authors.lastname: Devesa
authors.affiliation: Institute of Materials Technology, Universitat Politècnica de València, P.O. Box 22012, E-46071, Valencia, Spain.
authors.forename: V
authors.initials: V
authors.lastname: Amigó
authors.affiliation: Institute for Industrial, Radiophysical and Environmental Safety, Universitat Politècnica de València, P.O. Box 22012, E-46071, Valencia, Spain. Electronic address: virgupi@gmail.com.
authors.forename: A Igual
authors.initials: AI
authors.lastname: Muñoz
mesh_terms: D000497:Alloys / Q000737:chemistry*; D001672:Biocompatible Materials / Q000737:chemistry*; D002021:Buffers; D003343:Corrosion; D004563:Electrochemistry; D017276:Friction; D055595:Mechanical Phenomena; D009556:Niobium / Q000737:chemistry; D010710:Phosphates / Q000737:chemistry*; D012965:Sodium Chloride / Q000737:chemistry*; D014001:Tin / Q000737:chemistry; D014025:Titanium / Q000737:chemistry*
chemical_list: D000497:Alloys; D001672:Biocompatible Materials; D002021:Buffers; D010710:Phosphates; C023988:beta titanium; D009556:Niobium; D012965:Sodium Chloride; D014001:Tin; D014025:Titanium
keywords: Biomaterials; Passivation; Titanium alloys; Tribocorrosion