Abstract
Herein, the influences of solution-aging treatments on the corrosion behaviors of a wrought Ti-6Al-3Nb-2Zr-1Mo alloy are investigated. The solution-aging treated alloys exhibit a better corrosion performance than the wrought alloy, stemming from the alleviated galvanic corrosion. In artificial seawater, all alloys display a spontaneous passivation behavior, and the oxygen reduction reaction (ORR), affected by diffusion and charge-transfer processes, performs as the prominent cathodic reaction. However, in 5 M HCl, the activation-passivation transition occurs, and the cathodic reaction is mainly related to the hydrogen evolution reaction (HER) controlled by the Volmer reaction. Furthermore, we illustrate the relevant ORR and HER mechanisms.
Original language | English |
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Article number | 110694 |
Journal | Corrosion Science |
Volume | 208 |
DOIs | |
Publication status | Published - Nov 2022 |
Externally published | Yes |
Keywords
- Corrosion behavior
- Electrochemical analysis
- Microstructure
- Solution and aging treatments
- Titanium