Effect of electrolysis parameters on corrosion resistance of extra-low carbon high silicon iron-based alloy
Anti-Corrosion Methods and Materials
ISSN: 0003-5599
Article publication date: 23 December 2021
Issue publication date: 18 February 2022
Abstract
Purpose
High silicon iron-based alloys possess excellent corrosion resistance in certain specific media, but the effects of electrolysis parameters on corrosion resistance remain unknown. This study aims to guide the development and application of an extra-low carbon high silicon iron-based alloy (ECHSIA) in electrode plates.
Design/methodology/approach
The corrosion resistance of ECHSIA and a conventional high-silicon cast iron (CHSCI) was analyzed through experimental characterizations. The morphology was observed by scanning electron microscopy. The influence of electrolysis parameters on the corrosion resistance of ECHSIA was investigated through corrosion experiments. The relationship between the electrolysis parameters and the corrosion resistance of ECHSIA was statistically investigated using the grey correlation analysis method.
Findings
The corrosion resistance of the ECHSIA is better than that of the CHSCI. The corrosion rate showed an increasing tendency with the increase in the nitric acid concentration (CHNO3), electrolyte temperature and current density. The grey correlation analysis results showed that the CHNO3 was the main factor affecting the corrosion rate of the ECHSIA.
Originality/value
An ECHSIA with a single ferrite microstructure was prepared. This study provides a guideline for the future development and application of ECHSIAs as electrode plates.
Keywords
Acknowledgements
Funding: The authors would like to express their appreciation to the National Natural Science Foundation of China (NSFC: U1810207).
Citation
Zhang, Y., Xiao, J., Yang, S. and Zhao, A. (2022), "Effect of electrolysis parameters on corrosion resistance of extra-low carbon high silicon iron-based alloy", Anti-Corrosion Methods and Materials, Vol. 69 No. 2, pp. 121-130. https://doi.org/10.1108/ACMM-08-2021-2527
Publisher
:Emerald Publishing Limited
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