Influence of Zn2+on Corrosion Behavior of Ti in H2SO4 Solution with F-

The influence of Zn2'on the corrosion behavior of Ti in 1.68 mol L-1 H2SO4 with 0.058 mol L-1 F- solutions was investigated by mass loss measurements, electrochemical tests, and surface observation and analysis. Different concentrations of Zn2' (0.0002 mol L-1, 0.002 mol L-1, 0.02 mol L-1, 0.2 mol L-1) were added to the solutions to investigate the effect of Zn2' concentration. The mass loss results showed that the presence of Zn2' in the corrosive solution could accelerate the corrosion of Ti. From the electrochemical tests results, the corrosion resistance is decreased while increasing the Zn2' concentration. An adsorption-desorption model of TiFx3-x on Ti was proposed: Zn2' could inhibit the adsorption process of TiFx3-x and reduce the surface coverage of TiFx3-x, which could provide more active site for Ti to dissolve, resulted in the severe corrosion of Ti.<br /> (c) The Author(s) 2024. Published by ECSJ. This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercialShareAlike 4.0 License (CC BY-NC-SA, https://creativecommons.org/licenses/by-nc-sa/4.0/), which permits non-commercial reuse, distribution, and reproduction in any medium by share-alike, provided the original work is properly cited. For permission for commercial reuse, please email to the corresponding author. [DOI: 10.5796/electrochemistry.24-00121].