Tribological behavior of biomaterial for total hip prosthesis

Abstract

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 contact. The friction and wear experiments were carried out using ball-ondisc and pin-on-disc tribometers in ambient air, under different conditions of normal applied loads (3, 6 and 10 N) and sliding speeds (1, 15 and 25 mm.s −1) for 3000 m. The obtained research results revealed the lowest coefficient of friction was 0.038 at 1 mm.s −1 and 3 N) while the higher value was in the range of 0.90 at 25 mm.s −1 and 3 N). Results show that the specimens have similar friction and wear performance, although the sliding speed and applied loads are different. The tribomechanical wear, as evident from the observation of abrasion, adhesion and cracking, is the predominant wear mechanism.

Effect of Zr content on friction and wear behavior of Cr‐Zr‐N coating system

“…This coating, acted efficiently in this type of wear, showing negligible wear on the surface. This explains the frequent use of this coating in different applications, including cutting tools, guides, dies, biomedical applications, etc …”

“…The Cr‐Zr‐N coating microstructure can also influence the properties of materials and indirectly affect the tribological properties. The grain size and porosity of a coatings system directly influences the material properties such as thermal shock resistance and bending strength . The relationship between hardness and CrZrN coatings grain size followed a Hall‐Petch‐type equation, which involved an increasing hardness with decreasing grain size .…”

“…The grain size and porosity of a coatings system directly influences the material properties such as thermal shock resistance and bending strength. 59 The relationship between hardness and CrZrN coatings grain size followed a Hall-Petch-type equation, 60 which involved an increasing hardness with decreasing grain size. 52,61 The CrZrN coating systems with the smallest grain size showed the lowest wear rate, as expected.…”

A Comparative Study of Friction and Wear Processes of Model Metallic Biomaterials Including Registration of Friction-Induced Temperature Response of a Tribological Pair

“…In many cases, the most commonly used methods for wear testing of the metallic biomaterials are not particularly aimed on reflecting the actual working conditions of an artificial joint. For example, for tribological testing purposes, the ball-on-disc [13][14][15], pin-on-disc [13,15] and block-on-disc [16] configuration might be used. Moreover, the lubricating conditions [14,[17][18][19][20], the applied load [13,15,20], the sliding velocity [13,21] as well as the temperature [16,19], may differ.…”

Sliding friction and wear performance of the nano-bioceramic α-Al2O3 prepared by high energy milling

“…The problems of friction and wear in the prosthesis for substitution of hip joints and knees have been addressed by many authors [1][2][3][4][5][6], due to its crucial importance in the performance of these devices. The choice of the materials for the head and the cup takes into consideration not only properties such as mechanical resistance, friction and wear, but also biocompatibility and corrosion resistance.…”