Dynamics of stainless steel corrosion based on the theory of phase space reconstruction and chaos
Abstract
Purpose
The purpose of this study is to analyze the corrosion behavior of 304SS in three kinds of solution, 3.5 per cent NaCl, 5 per cent H2SO4 and 1 M (1 mol/L) NaOH, using electrochemical noise.
Design/methodology/approach
Corrosion types and rates were characterized by spectrum and time-domain analysis. EN signals were evaluated using a novel method of phase space reconstruction and chaos theory. To evaluate the chaotic characteristics of corrosion systems, the delay time was obtained by the mutual information method and the embedding dimension was obtained by the average false neighbors method.
Findings
The varying degrees of chaos in the corrosion systems were indicated by positive largest Lyapunov exponents of the electrochemical potential noise.
Originality/value
The change of correlation dimension in three kinds of solution demonstrated significant differences, clearly differentiating various types of corrosion.
Keywords
Acknowledgements
This material is based upon work supported by the National Science Foundation of China (grant no. 51476025), Jilin Province Science & Technique Program of China (grant no. 20140204020GX) and Jilin City Science & Technique Program of China (grant no. 201452009).
Citation
Men, H., Sun, B., Zhao, X., Li, X., Liu, J. and Xu, Z. (2016), "Dynamics of stainless steel corrosion based on the theory of phase space reconstruction and chaos", Anti-Corrosion Methods and Materials, Vol. 63 No. 3, pp. 214-225. https://doi.org/10.1108/ACMM-11-2015-1613
Publisher
:Emerald Group Publishing Limited
Copyright © 2016, Emerald Group Publishing Limited