The cathodic discharge of hydrogen on active and passive chromium surfaces in dilute sulphuric acid solutions

Wilde, B. E.; Hodge, F. G.

doi:10.1016/0013-4686(69)87044-1

Cited by 50 publications

(9 citation statements)

References 13 publications

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“…This explanation, however, is highly speculative. The HER on chromium has also been studied previously (10)(11)(12)(13). Our results shown in Table II may be compared at room temperature to the ones obtained by the following authors: Slope of 107 ON V, Cr, Mn, Co 227 mV was observed in 1N H2SO4 with io = 3.5 • 10 -s A.cm -2 by Ha Nhok Ba et al (11).…”

Section: Table IV Her On Cobalt: Kinetic Parameters and Some Other Ch...supporting

confidence: 76%

Hydrogen Evolution Reaction on Vanadium, Chromium, Manganese, Cobalt

Bélanger¹,

Vijh²

1974

J. Electrochem. Soc.

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The electrolytic hydrogen evolution reaction (HER) has been studied on V, Cr, Mn, and Co in sulfuric acid‐sulfate solutions. The data consist of Tafel slopes, exchange current densities, apparent heats of activation, corrosion rates, corrosion potentials, and, in some cases, reaction order derivatives. Attempts were also made to obtain information on the electrode coverage by transient techniques. The presence of corrosion, however, makes the possible electrode coverage by adsorbed hydrogen inaccessible. By combining these electrode kinetic data with the gas‐phase hydrogen adsorption behavior of these metals, it is suggested that the HER proceeds by means of the initial discharge mechanism on V and Mn whereas on Cr and Co, the radical‐ion mechanism has been concluded.

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Section: Table IV Her On Cobalt: Kinetic Parameters and Some Other Ch...supporting

confidence: 76%

Hydrogen Evolution Reaction on Vanadium, Chromium, Manganese, Cobalt

Bélanger¹,

Vijh²

1974

J. Electrochem. Soc.

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“…Such behavior, which has been previously reported for Cr and Cr alloys in dilute sulfuric acid solution, is attributed to the cathodic hydrogen evolution reaction on the passive surface, which results in a second stable corrosion potential in the passive region [20,21]. The polarization curves also display a current deflection in the transpassive region where oxygen evolution begins and interrupts the almost steady increase in current density.…”

Section: Potentiodynamic Polarization Behaviormentioning

confidence: 66%

The effect of Cu addition on the electrochemical corrosion and passivation behavior of stainless steels

Oguzie¹,

Li²,

Liu³

et al. 2010

Electrochimica Acta

163

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“…An additional argument in favor of the assumption about a not complete reduction of adsorbed oxygen in the course of cathodic scan is the broadening of regions of potentials where there is fixed the passing of a cathodic current after a change in the direction of the scan at a reverse of the potential with the potential of the electrode exposure shifting in the positive direction and an increase in the time of contact of the electrode with solution after the renewal. We will also note that the effect, which is connected with the decrease in the overvoltage of the hydrogen evolution reaction under the action of adsorbed oxygen, had already been reported in the relevant literature for a number of metals (see for example [47]). …”

Section: Resultsmentioning

confidence: 90%

Specific Features of the Initial Stages of Oxidation of a Silver Electrode in Weakly Acidified Solutions of Sodium Fluoride

2005

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The behavior of a silver electrode, which is renewed in situ by mechanical cutting, in weakly acidified sodium fluoride solutions is studied with the aid of an impedance method and a method of cyclic voltammetry. The application of said procedures makes it possible to record time effects, which reflect the processes of electrochemical adsorption of oxygen at the interface between the silver electrode and the solution, in the potential region extending from -0.7 to 0.2 V (SCE). Approximate calculations of the effect of potential and the time of the electrode's exposure (after its renewal) in contact with the electrolyte at given values of potential on the amount of adsorbed oxygen are performed on the basis of an analysis of the obtained experimental data. A comparison of the obtained results with the literature data makes it possible to put forth a substantiated opinion as to the reasons for the substantial difference in the intervals of potentials of ideal polarizability of the silver electrode/solution of a surface-inactive electrolyte system, which are presented in works of various authors.

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The cathodic discharge of hydrogen on active and passive chromium surfaces in dilute sulphuric acid solutions

Cited by 50 publications

References 13 publications

Hydrogen Evolution Reaction on Vanadium, Chromium, Manganese, Cobalt

Hydrogen Evolution Reaction on Vanadium, Chromium, Manganese, Cobalt

The effect of Cu addition on the electrochemical corrosion and passivation behavior of stainless steels

Specific Features of the Initial Stages of Oxidation of a Silver Electrode in Weakly Acidified Solutions of Sodium Fluoride

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