SciELO - Scientific Electronic Library Online

 
vol.32 número4Evaluation of the protective performance of several duplex systems exposed to industrial atmospherePhase trasnformations induced by irradiation with ions IN b Cu-Zn-Al single crystals índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Revista

Articulo

Indicadores

  • No hay articulos citadosCitado por SciELO

Links relacionados

  • No hay articulos similaresSimilares en SciELO

Compartir


Latin American applied research

versión impresa ISSN 0327-0793versión On-line ISSN 1851-8796

Resumen

P., Bruzzoni; R. M., Carranza; J. R., Collet Lacoste  y  E. A., Crespo. Study of Hydrogen permation through passive films on iron using electrochemical impedance spectroscopy. Lat. Am. appl. res. [online]. 2002, vol.32, n.4, pp.313-316. ISSN 0327-0793.

Abstract- The influence exerted by a passive film, grown at the detection side of an iron membrane, on the transport of hydrogen was studied using the classic electrochemical permeation tests combined with the electrochemical impedance spectroscopy technique. A theoretical model, considering the presence of traps to proton flux inside the passive film, fitted well the experimental results. It was found that protons move through the oxide at a mean velocity of 10-6 cm s-1 and that their concentration inside the film is three orders of magnitude higher than the concentration of hydrogen atoms inside the metal phase.

Palabras clave : Hydrogen; Iron; Passivity; Traps; EIS.

        · texto en Inglés     · Inglés ( pdf )

 

Creative Commons License Todo el contenido de esta revista, excepto dónde está identificado, está bajo una Licencia Creative Commons