Study of the electrochemical behaviour of the 7075 aluminum alloy in the presence of sodium oxalate

Kobotiatis, L.; Pébère, Nadine; Koutsoukos, Petros G.

doi:10.1016/s0010-938x(98)00164-4

Cited by 28 publications

(18 citation statements)

References 21 publications

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“…Generally the organic compounds containing hetero atoms like O, N, S and in some cases Se and P are found to have function as very effective corrosion inhibitors [2][3][4][5][6][7][8][9][10][11] . The efficiency of these compounds depends upon electron density present around the hetero atoms 12 .…”

Section: Introductionmentioning

confidence: 99%

Corrosion Inhibitory Effects of Some Schiff's Bases on Mild Steel in Acid Media

Sethi¹,

Chaturvedi²,

Upadhyay³

et al. 2007

J. Chil. Chem. Soc.

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Weight loss and thermometric methods have been used to study the corrosion inhibition of mild steel in acidic solution (HCl and H 2 SO 4 ) by Schiff's bases viz. N-(4-N,N-dimethylaminobenzal)-p-anisidine (SB 1 ), N-(4-N,N-dimethylaminobenzal)-p-toluidine (SB 2 ) and N-(4-N,N-dimethylaminobenzal)-2,4-dinitroaniline (SB 3 ). The efficiencies have been compared with those of parent amines from which Schiff's bases have been derived. Results of inhibition efficiencies observed from these two methods are in good agreement and have been found to be dependent on the concentrations of inhibitors as well as those of acids. Inhibition efficiency of all inhibitors increases with increasing concentration of inhibitors. Efficiency also increases with increasing concentration of acids. Inhibition efficiency is more in case of HCl rather than in H 2 SO 4 . Inhibition efficiency was found maximum up to 95.55% for mild steel in HCl solution. Inhibition efficiencies of synthesised Schiff's bases have been found much more than their parent amines. It was observed that inhibition efficiency of all amines increases with increasing concentration of amines but decreases with increasing concentration of HCl and H 2 SO 4 .

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Section: Introductionmentioning

confidence: 99%

Corrosion Inhibitory Effects of Some Schiff's Bases on Mild Steel in Acid Media

Sethi¹,

Chaturvedi²,

Upadhyay³

et al. 2007

J. Chil. Chem. Soc.

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“…Electrochemical impedance spectroscopy is an extremely powerful and sensitive characterisation technique to probe the charge transfer and charge separation processes occurring at electrode-solution or modified electrodesolution interfaces; the effect of temperature can also be studied using the same technology [59,65].…”

Section: Temperature Effect In the Presence Of No 2 -In Solutionmentioning

confidence: 99%

A new electrochemical sensor based on carbon paste electrode/Ru(III) complex for determination of nitrite: Electrochemical impedance and cyclic voltammetry measurements

Terbouche

Lameche

Ait‐Ramdane‐Terbouche

et al. 2016

Measurement

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International audienceThe modified carbon paste electrode with Ru(III) complex was studied as a novel sensor for the determination of nitrite. The behavior of NO2− at the electrode surface was investigated using electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV). EIS provided useful information on the charge transfer resistance (R) at the electrode/solution. The EIS measurements showed that R is low at oxidation potentials, and decreases with increasing temperature. The increase of the constant phase element with temperature is due to the accumulation of nitrite on the electrode, thus, facilitating the electron transfer between electrode and NO2−. CV was used to study the effect of pH on the electro-catalytic oxidation of NO2− and to determine the limit of detection (LOD). CV measurements showed a good linear relationship between the oxidation current and the concentration of NO2− over a wide concentration range 0–1.38 × 10−2 mol L−1. Low detection limit of 1.39 × 10−6 mol L−1 toward NO2− was obtained. LOD decreased by 23.2% compared to that determined using cavity microelectrode. © 2016 Elsevier Lt

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“…1a, impedance value decreases with increasing oxalate concentration from 0.005 to 0.1 M. At high frequency range the solution resistance (R S ) dominates and appears as a horizontal plateau as log R S , however, at low frequency range log(R S + R p ) appears as a horizontal plateau [8], where R p is the polarization resistance. The changing of the solution conductivity with the concentration of oxalate results in different impedance responses at high and low frequency ranges [9].…”

Section: Eis Measurementsmentioning

confidence: 99%