Tribological behavior of Ti-6Al-4V and Ti-6Al-7Nb Alloys for Total Hip Prosthesis
TypeArticles dans des revues avec comité de lecture
The aim of the study is to evaluate the friction and wear behavior of high-strength alloys Ti-6Al-7Nb used in femoral stem and compare it with a Ti-6Al-4V alloy cylindrical bar corresponding to ISO 5832-3 part 3/01-07-199 standard. The tribological behavior was investigated by wear tests, using ball-on-disc and pin-on-disc tribometers. These tests consisted of measuring the weight loss and the friction coefficient of samples. The oscillating friction and wear tests have been carried out in ambient with oscillating tribotester in accordance with standards ISO 7148, ASTM G99-95a, and ASTM G133-95 under different conditions of normal loads (3, 6, and 10 N) and sliding speeds (1, 15, and 25 mm·s−1). As counter pairs, a 100Cr6 steel ball with 10 mm in diameter was used. Results show that the two alloys had similar friction and wear performance, although their grain structures and compositions are different. Occurrence of large frictional occurred, is probably caused by formation and periodic, localized fracture of a transfer layer. Higher friction with larger fluctuation and higher wear rate was observed at the higher siding speed. The Ti-6Al-4V wear mechanism transforms from ploughing and peeling off wear at low sliding speed to plastic deformation and adhesive wear.
Showing items related by title, author, creator and subject.
FELLAH, Mamoun; ASSALA, Omar; LABAÏZ, Mohamed; DEKHIL, Leila; IOST, Alain (Scientific Research, 2013)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 ...
FELLAH, Mamoun; LABAÏZ, Mohamed; ASSALA, Omar; IOST, Alain; DEKHIL, Leila (Taylor & Francis, 2013)The aim of this research is to study the tribological behaviour of AISI 316L stainless steel for surgical implants (total hip prosthesis). The tribological behaviour is evaluated by wear tests, using tribometers ball on ...
FELLAH, M.; LABAÏZ, Mohamed; ASSALA, Omar; DEKHIL, Leila; ZERNIZ, N.; IOST, Alain (EDP Sciences, 2014)Friction and wear plays an important role in determining the performance of biomaterials. To this end, the present research is carried out to understand the tribological behavior important biometallic alloy, Ti-6Al-4V under ...
Sliding friction and wear performance of the nano-bioceramic α -Al 2 O 3 prepared by high energy milling FELLAH, Mamoun; SAMAD, Mohammed Abdul; LABAIZ, Mohamed; ASSALA, Omar; IOST, Alain (ELSEVIER, 2015)The structural evolution and morphological changes of the nanostructured α-Al2O3 powder using different milling times (1, 8, 16 and 24 h) were studied. It is observed that the crystallite size of the particles reduced to ...
LABAÏZ, Mohamed; FELLAH, Mamoun; ASSALA, Omar; IOST, Alain (Centre pour Ia Communication Scientifique Directe, 2015)Titanium and its alloys have been used as implant materials due to their very good mechanical and corrosion resistance and biocompatibility [1,2]. The most used biomaterials were commercially pure titanium (CP-Ti} ...