title: Tribological behavior of a Ni-free Zr-based bulk metallic glass with potential for biomedical applications.
abstract: In this study, the tribological behavior of a Ni-free Zr53Al16Co23·25Ag7.75 bulk metallic glass (BMG) was investigated in dry-sliding and simulated physiological media using ball-on-disk reciprocating friction. The effects of sliding load, speed, media and counterpart materials on the wear resistance of the Zr-Al-Co-Ag BMG were illustrated. Under dry-sliding in air, wear resistance of the Zr-based BMG decreases with increasing sliding load, and wear deterioration is controlled by oxidation and abrasive wear. With increasing sliding velocity, larger plastic deformation occurs on the surface of BMG due to the frictional heat. The BMG exhibits decreased wear resistance in 0.9% NaCl and phosphate buffer saline (PBS) solutions in comparison with that in air and deionized water, which is probably associated with tribocorrosion controlled by synergistic effects of abrasive and corrosive wear. The wear resistance of the Zr-based BMG against Si3N4 counterpart material is inferior to that against ZrO2, whereas the case is contrary to that against Al2O3. The effect of ceramic counterpart materials on the wear resistance of BMG is discussed based on their Young's modulus and fracture toughness.
authors.affiliation: Department of Materials Science and Engineering, Fujian University of Technology, 350118 Fuzhou, China; Department of Materials Science and Engineering, Fuzhou University, 350116 Fuzhou, China; Fujian Provincial Key Laboratory of Advanced Materials Processing and Application, 350118 Fuzhou, China.
authors.forename: Nengbin
authors.initials: N
authors.lastname: Hua
authors.affiliation: Department of Materials Science and Engineering, Fujian University of Technology, 350118 Fuzhou, China; Department of Materials Science and Engineering, Fuzhou University, 350116 Fuzhou, China; Fujian Provincial Key Laboratory of Advanced Materials Processing and Application, 350118 Fuzhou, China.
authors.forename: Wenzhe
authors.initials: W
authors.lastname: Chen
authors.affiliation: Department of Materials Science and Engineering, Fujian University of Technology, 350118 Fuzhou, China; Fujian Provincial Key Laboratory of Advanced Materials Processing and Application, 350118 Fuzhou, China.
authors.forename: Weiguo
authors.initials: W
authors.lastname: Wang
authors.affiliation: Department of Materials Science and Engineering, Fujian University of Technology, 350118 Fuzhou, China; Fujian Provincial Key Laboratory of Advanced Materials Processing and Application, 350118 Fuzhou, China.
authors.forename: Haotian
authors.initials: H
authors.lastname: Lu
authors.affiliation: Department of Materials Science and Engineering, Fujian University of Technology, 350118 Fuzhou, China; Fujian Provincial Key Laboratory of Advanced Materials Processing and Application, 350118 Fuzhou, China.
authors.forename: Xiaoyun
authors.initials: X
authors.lastname: Ye
authors.affiliation: Department of Materials Science and Engineering, Fujian University of Technology, 350118 Fuzhou, China; Fujian Provincial Key Laboratory of Advanced Materials Processing and Application, 350118 Fuzhou, China.
authors.forename: Guanghui
authors.initials: G
authors.lastname: Li
authors.affiliation: Department of Materials Science and Engineering, Fujian University of Technology, 350118 Fuzhou, China; Fujian Provincial Key Laboratory of Advanced Materials Processing and Application, 350118 Fuzhou, China.
authors.forename: Chen
authors.initials: C
authors.lastname: Lin
authors.affiliation: Department of Materials Science and Engineering, Fujian University of Technology, 350118 Fuzhou, China; Fujian Provincial Key Laboratory of Advanced Materials Processing and Application, 350118 Fuzhou, China.
authors.forename: Xufang
authors.initials: X
authors.lastname: Huang
mesh_terms: D000497:Alloys / Q000737:chemistry; D000537:Aluminum Oxide / Q000737:chemistry; D001672:Biocompatible Materials / Q000737:chemistry*; D003343:Corrosion; D055664:Electrochemical Techniques; D004566:Electrodes; D005898:Glass / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D009532:Nickel / Q000737:chemistry*; D010084:Oxidation-Reduction; D017655:Silicon Compounds / Q000737:chemistry; D014961:X-Ray Diffraction; D015040:Zirconium / Q000737:chemistry*
chemical_list: D000497:Alloys; D001672:Biocompatible Materials; D017655:Silicon Compounds; D009532:Nickel; D015040:Zirconium; D000537:Aluminum Oxide; C032734:silicon nitride
keywords: Bulk metallic glass; Corrosive wear; Dry sliding; Tribological behavior; Zirconium alloy