Effect of hydrogen charging on the stability of SAE 10B22 steel surface in alkaline solutions
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Data
2005-11-01
Autores
Modiano, S.
Carreno, J. A.
Fugivara, Cecilio Sadao [UNESP]
Benedetti, Assis Vicente [UNESP]
Mattos, O. R.
Título da Revista
ISSN da Revista
Título de Volume
Editor
Elsevier B.V.
Resumo
The influence of hydrogen charging into a quenched and tempered boron steel membrane electrode (SAE 10B22) was studied using borate buffer (pH 8.4) and NaOH solutions (pH 12.7), with or without the addition of 0.01 M EDTA. At the hydrogen input side, hydrogen charging influenced cyclic voltammograms increasing the anodic charge of iron(II) hydroxide formation, and decreasing the donor density of passive films. These results suggest that the hydrogen ingress caused instability of metallic surface, increasing the surface area activity. (C) 2005 Elsevier Ltd. All rights reserved.
Descrição
Palavras-chave
boron-alloyed steel, hydrogen charging, Mott-Shottky plots, cyclic voltammetry, EIS
Como citar
Electrochimica Acta. Oxford: Pergamon-Elsevier B.V., v. 51, n. 4, p. 641-648, 2005.