Abstract Potential step voltammetry (PSV) was introduced in earlier works as an advantageous alternative to traditional methods for measuring corrosion rate reinforced concrete. The present study aims improve PSV maximize its applicability monitoring, that is, beyond the narrowly-defined steel–concrete systems which initially validated. It therefore identified necessary address most suitable pu...

We report density functional theory (M06L) calculations including Poisson-Boltzmann solvation to determine the reaction pathways and barriers for the hydrogen evolution reaction (HER) on MoS2, using both a periodic two-dimensional slab and a Mo10S21 cluster model. We find that the HER mechanism involves protonation of the electron rich molybdenum hydride site (Volmer-Heyrovsky mechanism), leadi...

In this study Ni catalyst have been activated during hydrogen evolution reaction (HER) by adding Mo ions into the alkaline electrolyte. After dissolving different amounts of ammonium molybdate in the 1M NaOH as electrolyte, Ni catalyst was used as cathode for HER. Afterwards a comparison between hydrogen overpotential measured in Ni catalyst with and without in situ activation has been made; th...

The effect of ammonium thiocyanate (NH4SCN) on the behavior hydrogen entry into low alloy steel under cathode charging was investigated using electrochemical permeation technique. In this study, sides were polarized galvanostatically to control rate evolution reaction. potential, current density and measured at pH 3.0 in acetic buffer solution with without 3 g·L?1 NH4SCN. From Tafel slope react...

the aisi 316 l stainless steel (ss) specimens were exposed to passivation surface through two different processes including; holding in 40-vol% hno3 at temperature of 60 ºc for 30 min and 15-vol%h2so4 at ambient temperature for 1 hour. the corrosion behavior of specimens was evaluated in physiological solutions by electrochemical in vitro tests through linear and tafel polarization tests. cycli...

The application of external electrical field on concrete structures is widely used to protect it from chloride attack or evaluate its resistance penetration in a short period. During these electrochemical processes, the polarization electrodes placed inside and/or outside cannot be ignored. This study proposes numerical model dealing with mass transport and electrode polarizing process under an...