Hydrogen embrittlement risk of high strength galvanized steel in contact with alkaline media

► Hydrogen embrittlement risk of high strength galvanized steel in alkaline media. ► Relationship between hydrogen embrittlement risk and length of hydrogen evolution process. ► Influence of calcium concentration in high strength galvanized steel passivation. ► Electrochemical and mechanical behavio...

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Bibliographic Details
Published in:Corrosion science 2011-09, Vol.53 (9), p.2853-2860
Main Authors: Recio, F.J., Alonso, M.C., Gaillet, L., Sánchez, M.
Format: Article
Language:English
Subjects:
A. Steel reinforced concrete
A. Zinc
Applied sciences
C. Hydrogen embrittlement
Corrosion
Corrosion environments
Engineering Sciences
Exact sciences and technology
Exposure
Fractures
Galvanized steels
High strength
Hydrogen embrittlement
Hydrogen evolution
Materials
Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology
Media
Metals. Metallurgy
Risk
Wire
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Summary:► Hydrogen embrittlement risk of high strength galvanized steel in alkaline media. ► Relationship between hydrogen embrittlement risk and length of hydrogen evolution process. ► Influence of calcium concentration in high strength galvanized steel passivation. ► Electrochemical and mechanical behavior of high strength galvanized steel. The critical conditions for hydrogen embrittlement (HE) risk of high strength galvanized steel (HSGS) wires and tendons exposed to alkaline concrete pore solutions have been evaluated by means of electrochemical and mechanical testing. There is a relationship between the hydrogen embrittlement risk in HSGS and the length of hydrogen evolution process in alkaline media. The galvanized steel suffers anodic dissolution simultaneously to the hydrogen evolution which does not stop until the passivation process is completed. HSGS wires exposed to a very high alkaline media have showed HE risk with loss in mechanical properties only if long periods with hydrogen evolution process take place with a simultaneous intensive galvanized coating reduction.
ISSN:0010-938X
1879-0496
DOI:10.1016/j.corsci.2011.05.023