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Friction and Wear Behavior of Ti-6Al-7Nb Biomaterial Alloy

Journal of Biomaterials and Nanobiotechnology 2013年第4期4卷 374-384页

作者： Mamoun Fellah Omar Assala Mohamed Labaiz leila dekhil Alain Iost Surface Engineering and Tribology Team Laboratory of Metallurgy and Engineering MaterialsBADJI Mokhtar-Annaba UniversityAnnabaAlgeria Laboratory of Formability and Metallic Materials BADJI Mokhtar-Annaba UniversityAnnabaAlgeria Laboratory of Metallurgy ARTS ET METIERS ParisTechLilleFrance

Titanium has been increasingly applied to biomedical application because of its improved mechanical characteristics, corrosion resistance and biocompatibility. However their application remains limited, due to the low strength and poor wear resistance of unalloyed titanium. The purpose of this study is to evaluate the friction and wear behavior of high-strength titanium alloys: Ti-6Al-7Nb used in femoral stem (total hip prosthesis). The oscillating friction and wear tests have been carried out in ambient air with oscillating tribotester in accord with standards ISO 7148, ASTM G99-95a, ASTM G 133-95 under different conditions of normal applied load (3, 6 and 10 N) and sliding speed (1, 15 and 25 mm.s-1), and as a counter pair we used the ball of 100C 6, 10 mm of diameter. The surface morphology of the titanium alloys has been characterized by SEM, EDAX, micro hardness, roughness analysis measurements. The behavior observed for both samples suggests that the wear and friction mechanism during the test is the same for Ti alloys, and to increase resistance to wear and friction of biomedical titanium alloys used in total hip prosthesis (femoral stems) the surface coating and treatment are required.

关键词： Tribological Behavior Friction and Wear Tests Biomaterial Total Hip Prosthesis Ti-6Al-7Nb

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Effect of sintering temperature on structure and tribological properties of nanostructured Ti-15Mo alloy for biomedical applications

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Transactions of Nonferrous Metals Society of China 2019年第11期29卷 2310-2320页

作者： Mamoun FELLAH Naouel HEZIL dekhil leila Mohammed ABDUL SAMAD Ridha DJELLABI Stephania KOSMAN Alex MONTAGNE Alain IOST Aleksei OBROSOV Sabine WEISS Mechanical Engineering Department ABBES Laghrour-UniversityKhenchelaP.O.125240004Algeria Tribology and Materials Group Laboratory of FoundryBadji Mokhtar UniversityAnnabaB.O.12 CP 23000Algeria Mater Sciences Department ABBES Laghrour-UniversityKhenchelaP.O.125240004Algeria Laboratoire de Mise en forme des Matériaux Métalliques(LMF2M) UniversitéBadji—MokhtarB.P.1223000 AnnabaAlgeria Mechanical Engineering Department King Fahd University of Petroleum and MineralsBox 1180Dhahran 31261KSA Department of Environmental Engineering College of Chemistry and Environmental EngineeringShenzhen UniversityShenzhen 518055China Arts et Metiers ParisTech MSMP8Boulevard Louis XIV59046 Lille CedexFrance Department of Physical Metallurgy and Materials Technology Brandenburg Technical University03046 CottbusGermany

The effect of sintering temperature(1073?1373 K)on the structural and tribological properties of nanostructured ballmilledβ-type Ti?15Mo samples was *** prepared samples were characterized using various apperatus such as X-ray diffractometer,scanning electron microscope(SEM)and ball-on-plate type oscillating *** tests were conducted under different applied loads(2,8 and 16 N).Structural results showed that the mean pore and crystallite size continuously decreased with increasing sintering temperature to reach the lowest values of 4 nm and 29 nm at 1373 K,*** relative density of the sintered sample at 1373 K was as high as 97.0%.Moreover,a higher sintering temperature resulted in higher relative density,greater hardness and elastic modulus of the *** was observed that both the friction coefficient and wear rate were lower in the sample sintered at 1373 K which was attributed to the closed porosity.

关键词： Ti-15Mo wear tribological behaviour nanotribology sintering biomedical applications

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