ISIJ International
Online ISSN : 1347-5460
Print ISSN : 0915-1559
ISSN-L : 0915-1559
Regular Article
Hydrogen Entry in Crevice Region: Evaluation by Hydrogen Permeation Technique
Thiyagarajan SundararajanEiji AkiyamaYasuyuki KatadaKaneaki Tsuzaki
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2006 Volume 46 Issue 7 Pages 1081-1085


Pure iron exposed to acetate buffer showed both metal dissolution and hydrogen evolution inside the crevice region. Potential drop occurred inside the crevice led to both active dissolution and cathodic reactions. Hydrogen ingress into the specimen was monitored on the rear side using electrochemical hydrogen permeation technique. The results showed that magnitude of hydrogen entered inside the crevice could be detected by the permeation technique. Change in the applied potential significantly influenced the amount of permeated hydrogen. The results are correlated potential drop occurred inside the crevice, which influenced the magnitude of diffusible hydrogen.

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© 2006 by The Iron and Steel Institute of Japan
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