title: Contact damage failure analyses of fretting wear behavior of the metal stem titanium alloy-bone cement interface.
abstract: Although cemented titanium alloy is not favored currently in the Western world for its poor clinical and radiography outcomes, its lower modulus of elasticity and good biocompatibility are instrumental for its ability supporting and transforming physical load, and it is more suitable for usage in Chinese and Japanese populations due to their lower body weights and unique femoral characteristics. Through various friction tests of different cycles, loads and conditions and by examining fretting hysteresis loops, fatigue process curves and wear surfaces, the current study investigated fretting wear characteristics and wear mechanism of titanium alloy stem-bone cement interface. It was found that the combination of loads and displacement affected the wear quantity. Friction coefficient, which was in an inverse relationship to load under the same amplitude, was proportional to amplitudes under the same load. Additionally, calf serum was found to both lubricate and erode the wear interface. Moreover, cement fatigue contact areas appeared black/oxidative in dry and gruel in 25% calf serum. Fatigue scratches were detected within contact areas, and wear scars were found on cement and titanium surfaces, which were concave-shaped and ring concave/ convex-shaped, respectively. The coupling of thermoplastic effect and minimal torque damage has been proposed to be the major reason of contact damage. These data will be important for further studies analyzing metal-cement interface failure performance and solving interface friction and wear debris production issues.
authors.affiliation: School of Mechatronic Engineering, China University of Mining and Technology, Xuzhou 221116, China.
authors.forename: Lanfeng
authors.initials: L
authors.lastname: Zhang
authors.affiliation: School of Mechatronic Engineering, China University of Mining and Technology, Xuzhou 221116, China. Electronic address: gesr@cumt.edu.cn.
authors.forename: Shirong
authors.initials: S
authors.lastname: Ge
authors.affiliation: School of Material Science and Engineering, China University of Mining and Technology, Xuzhou 221116, China.
authors.forename: Hongtao
authors.initials: H
authors.lastname: Liu
authors.affiliation: School of Material Science and Engineering, China University of Mining and Technology, Xuzhou 221116, China.
authors.forename: Qingliang
authors.initials: Q
authors.lastname: Wang
authors.affiliation: Sansom Institute for Health Research, and School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, SA 5001, Australia.
authors.forename: Liping
authors.initials: L
authors.lastname: Wang
authors.affiliation: Sansom Institute for Health Research, and School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, SA 5001, Australia. Electronic address: cory.xian@unisa.edu.au.
authors.forename: Cory J
authors.initials: CJ
authors.lastname: Xian
mesh_terms: D000497:Alloys; D001843:Bone Cements; D019544:Equipment Failure Analysis / Q000295:instrumentation / Q000379:methods*; D006622:Hip Prosthesis; D008422:Materials Testing; D055595:Mechanical Phenomena; D013499:Surface Properties; D014025:Titanium
chemical_list: D000497:Alloys; D001843:Bone Cements; C031462:titanium alloy (TiAl6V4); D014025:Titanium
keywords: Fretting fatigue; Fretting wear; Metal; Stem–bone cement interface