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International Journal of Corrosion
Volume 2014 (2014), Article ID 309416, 5 pages
http://dx.doi.org/10.1155/2014/309416
Research Article

Effect of Cold-Rolled Thickness Reduction Degree on Characteristics of Hydrogen Diffusion in Silicon Steel

1School of Mechanical and Electrical Engineering, Henan Institute of Science and Technology, East of Hualan Road, Xinxiang 453003, China
2College of Information, Mechanical and Electrical Engineering, Shanghai Normal University, 100 Guilin Road, Shanghai 200235, China

Received 6 January 2014; Revised 25 May 2014; Accepted 1 June 2014; Published 17 June 2014

Academic Editor: Michael J. Schütze

Copyright © 2014 Yongfeng Li et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The characteristic of hydrogen uptake and diffusion in the cold-rolled silicon steel was investigated by electrochemical hydrogen permeation technique performed under different cathodic charging current density and cold-rolled thickness reduction degree. The results indicated that anodic permeation current density increased with increasing cathodic charging current for the specimens. Moreover, the anodic steady state permeation current density and the solubility increased with an increase in the cold-rolled thickness reduction degrees. The breakthrough time of hydrogen in the specimens was shortened with increasing thickness reduction degrees, and the value of the hydrogen diffusivity decreased gradually with increasing thickness reduction degrees.