Improving the fretting biocorrosion of Ti6Al4V alloy bone screw by decorating structure optimised TiO2 nanotubes layer
Jiajun Luo, Maryam Tamaddon, Changyou Yan, Shuanhong Ma, Xiaolong Wang, Feng Zhou, Chaozong Liu
Fig. 7. Optical image of MA, NT and SONT screws before fretting test (a1) and after fretting test (a2). The enlarged optical images revealed the fretting worn markers on pristine (b1), NT (b2) and SONT (b3) screws, respectively.