Kinetics and mechanism of palladium electrodeposition on graphite electrode by impedance and noise measurements

Danaee, I.

doi:10.1016/j.jelechem.2011.09.012

Cited by 75 publications

(25 citation statements)

References 59 publications

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“…The PZC has lowest capacitance value in variation of double layer capacitance versus applied anodic and cathodic potentials. Fitting of experimental impedance spectroscopy data to the proposed equivalent circuit was done by means of home written least square software based on Marquardt method for the optimization of functions and Macdonald weighting for the real and imaginary parts of the impedance [14,15].…”

Section: Apparatus and Methodsmentioning

confidence: 99%

Impedance Spectroscopy Studies on Corrosion Inhibition Behavior of Synthesized N,N’-bis(2,4-dihydroxyhydroxybenzaldehyde)-1,3-Propandiimine for API-5L-X65 Steel in HCl Solution

Danaee

Bahramipanah

Moradi

et al. 2016

Journal of Electrochemical Science and Technology

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The inhibition ability of N,N-bis(2,4-dihydroxyhydroxybenzaldehyde)-1,3-Propandiimine (DHBP) as a schiff base against the corrosion of API-5L-X65 steel in 1 M HCl solution was evaluated by electrochemical impedance spectroscopy, potentiodynamic polarization and scanning electron microscopy. Electrochemical impedance studies indicated that DHBP inhibited corrosion by blocking the active corrosion sites. The inhibition efficiency increased with increasing inhibitor concentrations. EIS data was analysed to equivalent circuit model and showed that the charge transfer resistance of steel increased with increasing inhibitor concentration whilst the double layer capacitance decreased. The adsorption of this compound obeyed the Langmuir adsorption isotherm. Gibbs free energy of adsorption was calculated and indicated that adsorption occurred through physical and spontaneous process. The corrosion inhibition mechanism was studied by potential of zero charge. Polarization studies indicated that DHBP retards both the cathodic and anodic reactions through adsorption on steel surface. Scanning electron microscopy was used to study the steel surface with and without inhibitor.

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Section: Apparatus and Methodsmentioning

confidence: 99%

Impedance Spectroscopy Studies on Corrosion Inhibition Behavior of Synthesized N,N’-bis(2,4-dihydroxyhydroxybenzaldehyde)-1,3-Propandiimine for API-5L-X65 Steel in HCl Solution

Danaee

Bahramipanah

Moradi

et al. 2016

Journal of Electrochemical Science and Technology

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“…Electrochemical impedance spectroscopy (EIS) measurements were performed in the frequency interval of 100 kHz to 1 mHz with AC amplitude of ±10 mV. Fitting of experimental impedance spectroscopy data to the proposed equivalent circuit was done by means of a home written least square software based on the Marquardt method for the optimization of functions and Macdonald weighting for the real and imaginary parts of the impedance [11,12].…”

Section: Methodsmentioning

confidence: 99%

Electrochemical Corrosion Behavior of Duplex Stainless SteelAISI 2205 in Ethylene Glycol-Water Mixture in the Presence of50 W/V % LiBr

Goodarzi¹,

Danaee²,

Ebrahimi³

et al. 2016

Journal of Electrochemical Science and Technology

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The corrosion behavior of duplex stainless steel AISI 2205 was investigated in ethylene glycol-water mixture in the presence of 50 W/V % LiBr at different concentrations and different temperatures. Cyclic polarization, impedance measurements and Mott-Schottky analysis were used to study the corrosion behavior the semi conductive properties of the passive films. The results showed that with increasing in the ethylene glycol concentration to 10 V/V%, the corrosion rate of the steel alloy substrate increased. In higher concentrations of ethylene glycol, corrosion current of steel decreased. The results of scanning electron microscopy of electrode surface confirmed the electrochemical tests. Electrochemical experiment showed that duplex steel was stable for pitting corrosion in this environment. The increase in the ethylene glycol concentration led to increasing the susceptibility to pitting corrosion. The corrosion current increased as the temperature rise and also pitting potentials and repassivation potentials shifted towards the less positive values as the temperature increased. According to Mott-Schottky analysis, passive films of stainless steel at the different temperatures showed both n-type and p-type semiconductor behavior in different potential.

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“…A frequency sweep from 100 kHz to 10 MHz was used for EIS measurements. EIS data were curve-fitted to the proposed equivalent circuit by in-house least square software based on the Marquardt method for the optimization of functions and Macdonald weighting for the real and imaginary parts of the impedance [26,27]. SEM (VEGA, TESCAN-LMU) equipped with EDS was employed to characterize the surface morphology and average chemical composition.…”

Section: Methodsmentioning

confidence: 99%

Corrosion behavior of Ce-oxide/hydroxide coated AA7075-T6 prepared by dip immersion method

Danaee

Kanaani²,

Maddahy³

et al. 2014

Turkish J Eng Env Sci

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Abstract:In this study, cerium-based conversion coating was deposited on aluminum 7075-T6 by dip immersion method.Cerium oxide/hydroxide is an environmentally friendly conversion coating. Its corrosion resistance in 3.5 wt.% NaCl solution was investigated by means of electrochemical impedance spectroscopy, potentiodynamic polarization, and surface techniques. The coated samples showed a significant decrease in corrosion rate and the coating resistance increased with increasing immersion time up to 1200 s. In addition, electrochemical impedance data showed that in the presence of cerium oxide/hydroxide conversion coatings, the charge transfer resistance of aluminum increased. Surface morphology and its chemical composition were analyzed by means of scanning electron microscopy and energy dispersive spectroscopy.

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Kinetics and mechanism of palladium electrodeposition on graphite electrode by impedance and noise measurements

Cited by 75 publications

References 59 publications

Impedance Spectroscopy Studies on Corrosion Inhibition Behavior of Synthesized N,N’-bis(2,4-dihydroxyhydroxybenzaldehyde)-1,3-Propandiimine for API-5L-X65 Steel in HCl Solution

Impedance Spectroscopy Studies on Corrosion Inhibition Behavior of Synthesized N,N’-bis(2,4-dihydroxyhydroxybenzaldehyde)-1,3-Propandiimine for API-5L-X65 Steel in HCl Solution

Electrochemical Corrosion Behavior of Duplex Stainless SteelAISI 2205 in Ethylene Glycol-Water Mixture in the Presence of50 W/V % LiBr

Corrosion behavior of Ce-oxide/hydroxide coated AA7075-T6 prepared by dip immersion method

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