The Effect of Normal Force on Tribocorrosion Behaviour of Ti-10Zr Alloy and Porous TiO2-ZrO2 Thin Film Electrochemical Formed

International Conference on Innovative Research - ICIR Euroinvent 2017

Dnil, E.^1 ; Benea, L.^1

Competences Center: Interfaces-Tribocorrosion-Electrochemical Systems (CC-ITES), Faculty of Engineering, Dunarea de Jos University of Galati, 47 Domneasc Street, Galai

RO-800008, Romania^1

关键词: Artificial saliva;    Biomedical applications;    Experimental set up;    Friction coefficients;    Normal forces;    Open circuit potential measurements;    Tribo-corrosion;    ZrO2 thin films;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/209/1/012015/pdf
DOI  :  10.1088/1757-899X/209/1/012015

来源: IOP

【 摘 要 】

The tribocorrosion behaviour of Ti-10Zr alloy and porous TiO2-ZrO2thin film electrochemical formed on Ti-10Zr alloy was evaluated in Fusayama-Mayer artificial saliva solution. Tribocorrosion experiments were performed using a unidirectional pin-on-disc experimental set-up which was mechanically and electrochemically instrumented, under various solicitation conditions. The effect of applied normal force on tribocorrosion performance of the tested materials was determined. Open circuit potential (OCP) measurements performed before, during and after sliding tests were applied in order to determine the tribocorrosion degradation. The applied normal force was found to greatly affect the potential during tribocorrosion experiments, an increase in the normal force inducing a decrease in potential accelerating the depassivation of the materials studied. The results show a decrease in friction coefficient with gradually increasing the normal load. It was proved that the porous TiO2-ZrO2thin film electrochemical formed on Ti-10Zr alloy lead to an improvement of tribocorrosion resistance compared to non-anodized Ti-10Zr alloy intended for biomedical applications.