Paper Title:
Acetate and Chloride Effects on Hydrogen Production across Crevices
  Abstract

Crevice corrosion experiments on pure iron were carried out in a 0.5 M acetate buffer with varied chloride concentrations. Changes in resultant currents and morphology due to crevice attack were explained by IR potential drop mechanisms. The specimens experienced potential drop inside the crevice, which resulted in the formation of passive, active, and hydrogen evolution regions. The passive region did not exist in the electrolyte containing 0.05 M and 0.5 M chloride. Hydrogen evolution, which occurred inside the crevice was measured on rear side of the specimen using hydrogen permeation test. The results suggest that the hydrogen produced inside the crevice is measurable using a permeation test. The entry of diffusible hydrogen showed a significant increase with the addition of chloride into the acetate buffer.

  Info
Periodical
Edited by
Yukichi Umakoshi and Shinji Fujimoto
Pages
97-102
DOI
10.4028/www.scientific.net/MSF.512.97
Citation
T. Sundararajan, E. Akiyama, K. Tsuzaki, "Acetate and Chloride Effects on Hydrogen Production across Crevices", Materials Science Forum, Vol. 512, pp. 97-102, 2006
Online since
April 2006
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