Artículo
Interaction of hydrogen with the microstructure of low-carbon steel
Fecha de publicación:
11/2006
Editorial:
Elsevier Science SA
Revista:
Materials Science and Engineering A: Structural Materials: Properties, Microstructure and Processing
ISSN:
0921-5093
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The interaction of hydrogen (H) with the microstructure of SAE 1008 type low-carbon steel is studied in this work. The objective is to determine the binding energy of H with the cementite (Fe3C) for three different conditions of the carbide. Electrochemical permeation tests are combined with the numerical resolution of Fick´s equations assuming that hydrogen is delayed during de transport by reversible trapping sites. Techniques of H vacuum desorption are also employed to describe irreversible trapping. From permeation tests, we obtain the density of reversible trapping sites and the probabilities of H capture and release from which the binding energy is evaluated. From effusion test, weak and strong trapping sites with energies in the range of 10-50 kJ/mol H were observed.
Palabras clave:
Hydrogen
,
Low carbon Steels
,
Difusión
,
Permeation tests
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Licencia
Identificadores
Colecciones
Articulos(SEDE CENTRAL)
Articulos de SEDE CENTRAL
Articulos de SEDE CENTRAL
Citación
Ramunni, Viviana Patricia; De Paiva Coelho, T.; de Miranda, P. E. V.; Interaction of hydrogen with the microstructure of low-carbon steel; Elsevier Science SA; Materials Science and Engineering A: Structural Materials: Properties, Microstructure and Processing; 435-436; 11-2006; 504-514
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