Abstract
The effect of temperature on the corrosion resistance performance of the passivation film (PF) formed at 20 °C to 60 °C was investigated systematically in Cl− ion or/and SO42− ion solution. It is found that the temperature accelerates the growth rate of PF and increases the thickness of PF. In addition, the critical chloride ion concentration of PF at 20 °C to 40 °C, and that of PF at 50 °C and 60 °C, which is increased by 15.8%. In the single SO42−, all the PF were not depassivated with the increased concentration of SO42−. However, at the presence of Cl−, the PF were depassivated once the concentration of SO42− reaches 0.18 mol/L. These results show that in a single ion environment, the corrosion resistance of PF increased with the passivation temperature, while the impact of temperature on the corrosion resistance of PF is negligible in the combine solution of 3.5 wt% Cl− and SO42− ions.
Acknowledgements
All the support is gratefully appreciated.
Authors contribution statement
Haosen Jiang: Formal analysis, Data Curation, Writing. Xiaoying Zhang: Conceptualization, Methodology, Review & Editing, Supervision. Zuquan Jin: Funding acquisition, Project administration, Writing – Review and Editing. Yuehua Chen:Writing – Review and Editing, Visualization. Yue Liu: Validation.
Disclosure statement
No potential conflict of interest was reported by the authors.
Data availability statement
The data will not be available due to incomplete completion of the experiment.