Fatigue and wear evaluation of Ti-Al-Nb alloys for biomedical applications

Effect of microstructural evolution on wettability and tribological behavior of TiO2 nanotubular arrays coated on Ti–6Al–4V

“…On the other hand, wear in mechanical parts is important which is needed to assess the reliability of a material in medical implant applications because an implant has to withstand not only onetime peak stresses but also the several million load cycles that it typically experiences throughout its lifetime [9]. Ti-6Al-4V alloy is reported to have notoriously poor wear resistance due to its low resistance to plastic shearing and the low level of protection imparted by surface oxides [10].…”

Titanium Alloys for Biomedical Applications

“…The ambient-temperature tensile and fatigue strengths of the Ti-Al-Nb alloys compared favorably to those for Ti-6Al-4V, while their Young's modulus values were slightly lower than that for Ti-6Al-4V [ 121 ]. These Ti-Al-Nb alloys have been shown to have up to three times greater wear resistance [ 122 ], and they have also been shown to be nontoxic and biocompatible, where it is notable that Ti-Al-Nb alloy particles have been shown to be less toxic than TiAl-V particles [ 123 ]. The RT (room temperature) fatigue and tensile behavior of Ti-10Al-47Nb and Ti-7Al-51Nb alloys were compared to that for Ti-6Al-4V and other titanium alloys [ 121 , 122 ].…”

Introductory Chapter: Multi-Aspect Bibliographic Analysis of the Synergy of Technical, Biological and Medical Sciences Concerning Materials and Technologies Used for Medical and Dental Implantable Devices

“…The biocompatibility, especially thrombocompatibility, of Ti can be enhanced by introducing alloy elements [325]. Some publications [326][327][328][329][330][331][332][333][334] provide limited information on the toxic activity of V as an alloy element in the Ti6Al4V alloy, because it was found that V could be regarded as a potentially toxic factor [335,336], which is, however, true only for a considerable concentration of V in a body, due to development of its undesired immunological response, when the freed V ions migrate from the material surface to a soft tissue, binding with proteins [337,338]. Some research on cells implies that Ti6Al4V exhibits high cytotoxicity [307][308][309][310][311]339]; there are reports that V may cause sterile abscesses, and Al may cause scarring, while Ti, Zr, Nb and Ta show good biocompatibility [340].…”