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Erfan Zalnezhad

Erfan Zalnezhad

Hanyang University, South Korea

Title: Fretting fatigue life evaluation of Zr/ZrO2 nanotubes coating on Ti-6Al-4V for biomedical application

Biography

Biography: Erfan Zalnezhad

Abstract

Herein, the fretting fatigue behavior of zirconium nanotube arrays on the surface of Ti-6Al-4V is studied. Initially, a thin film of pure zirconium (Zr) was deposited onto a Ti-6Al-4V substrate using physical vapor deposition (PVD) magnetron sputtering for the primary layer at varying DC power, temperature and substrate bias voltage values. Consequently, nanotubes were produced via Zr anodization in an NH4F electrolyte solution (95 glycerol: 5 water) at different times and at a constant potential of 60 V (second layer). The fretting fatigue behavior of anodized samples annealed at 400℃ and 800℃ was investigated. The results indicate that the fretting fatigue life of the ZrO2 nanotube-coated samples was significantly improved at low and high cyclic fatigue at an annealing temperature of 400℃ compared to the uncoated samples.