ISIJ International
Online ISSN : 1347-5460
Print ISSN : 0915-1559
ISSN-L : 0915-1559
Hydrogen Entry into Steel by Atmospheric Corrosion
Takahiro Kushida
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ジャーナル オープンアクセス

2003 年 43 巻 4 号 p. 470-474

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抄録
Structural Steels with higher strength are recently required. Therefore, environmental degradation by hydrogen, delayed fracture, should be afraid. Absorbed hydrogen contents in structural steels have been investigated by thermal hydrogen analysis. Hydrogen entry into steel has been directly measured by electrochemical hydrogen permeation technique. Hydrogen entry into steel occurs immediately after weathering by atmospheric corrosion. The maximum absorbed hydrogen content is observed at half a year. Hydrogen entry into steel is not affected by area location, weathering conditions, air born salts and so on. Hydrogen entry is due to the pH drop of hydrolysis of Fe2+ or Fe3+ with initial rust formation.
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© The Iron and Steel Institute of Japan

This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs license.
https://creativecommons.org/licenses/by-nc-nd/4.0/
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