Effect of immersion time on the electrochemical behaviour of AZ31B alloy

Fattah‐alhosseini, Arash; Joni, M. Sabaghi

doi:10.1016/j.jallcom.2015.06.181

Cited by 20 publications

(13 citation statements)

References 35 publications

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“…The positive slope in this region is attributed to n-type behavior. These observations are agreement with the results obtained in previous works for Mg and its alloys (Ref [74][75][76]. According to Eq 1, donor density has been determined from these positive slopes (Ref 74-76):…”

Section: Mott-schottky Analysissupporting

confidence: 91%

“…Concerning the Nyquist curve for uncoated AZ31 Mg alloy, the equivalent circuit of Fig. 7(a) has been used for findings the best fitness ( Ref 74,75). In this equivalent circuit, R s (=260 X) is the solution resistance, and R ct is the resistance of the barrier layer interface in parallel with Q dl .…”

Section: Eis Measurementsmentioning

confidence: 99%

“…where e is the electron charge, N D represents the donor density for n-type semiconductor (cm À3 ), e stands for the dielectric constant of the passive film (usually taken as 9.6 for Mg alloys (Ref [74][75][76], e 0 denotes the vacuum permittivity, and k, T, and E FB are the Boltzmann constant, absolute temperature, and flat band potential, respectively. The changes in the donor density correspond to the nonstoichiometry defects in the passive films (Ref [74][75][76][77].…”

Section: Mott-schottky Analysismentioning

confidence: 99%

“…The changes in the donor density correspond to the nonstoichiometry defects in the passive films (Ref [74][75][76][77]. Based on the point defect model (Ref 78, 79), the cation vacancies are electron acceptors, thereby doping the barrier layer p-type, whereas the oxygen vacancies and the metal interstitials are electron donors, resulting in the n-type doping.…”

Section: Mott-schottky Analysismentioning

confidence: 99%

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Effect of KOH Concentration on the Microstructure and Electrochemical Properties of MAO-Coated Mg Alloy AZ31B

Fattah‐alhosseini

Joni

2015

J. of Materi Eng and Perform

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In this study, the effect of KOH concentration on the electrochemical properties of micro-arc oxidation (MAO) coated Mg alloy AZ31B has been investigated. Also, the surface morphology and chemical composition of the MAO coatings have been characterized by scanning electron microscopy and x-ray diffraction. In MAO process, an increase in the concentration of KOH as a result of increase in the electrolyte electrical conductivity leads to a reduction in sparking which in turn improves the quality and the behavior of anodic coatings in the concentration of 2.5 M. Moreover, it can be concluded that the MAO coating shows its best protective behavior when KOH concentration is equal 2.5 M, and if the concentration is higher or lower than this value, the protective properties of MAO coating will decrease.

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Section: Mott-schottky Analysissupporting

confidence: 91%

Section: Eis Measurementsmentioning

confidence: 99%

Section: Mott-schottky Analysismentioning

confidence: 99%

Section: Mott-schottky Analysismentioning

confidence: 99%

See 2 more Smart Citations

Effect of KOH Concentration on the Microstructure and Electrochemical Properties of MAO-Coated Mg Alloy AZ31B

Fattah‐alhosseini

Joni

2015

J. of Materi Eng and Perform

Self Cite

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“…The polarization tests provide the corrosion characteristics of a metal. Although it is a quick test there are certain areas of ambiguity in selecting pre-immersion times and potentiodynamic scan rates and extrapolation of Tafel-slopes for finding icorr and Ecorr [5][6][7][8]. An alternative curve fitting method is developed in this paper to obtain the four parameters of Butler-Volmer expression [9].…”

Section: Introductionmentioning

confidence: 99%

Novel optimization technique to determine polarization characteristics of a corroding metal

Ahmed¹,

Thamida²,

Narasaiah³

2017

Electrochemical Energy Technology

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Polarization data characterize the corrosion behavior of a metal giving a quick estimate of corrosion current density icorr and corrosion potential Ecorr. These two characteristics determine the corrosion rate and position of the metal in galvanic series. The chosen system for the study is steel (SS304) in NaCl solution. In these studies, icorr and Ecorr of Butler-Volmer equation are obtained by fitting the full expression to experimental current vs potential data unlike the graphical method using Tafelslopes. MATLAB optimization tool box is utilized for this purpose. The novel optimization technique is explained for determining Ecorr and icorr

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Corrosion Inhibition of Mild Steel in Sulfuric Acid by a Newly Synthesized Schiff Base: An Electrochemical, DFT, and Monte Carlo Simulation Study

et al. 2020

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Effects of using a synthesized aminothiazole (BZ) Schiff base at different concentrations with and without the addition of 1 mM of KI on the corrosion mitigation of mild steel (MS) in 0.5 M sulphuric acid (H 2 SO 4) solutions are studied electrochemically using direct and alternating currents (DC and AC) techniques. Besides, the adsorption and thermodynamic parameters are calculated in a temperature range of 293-323 K. Furthermore, Mott-Schottky analysis is used to study the type of oxide layer on the MS surface. Quantum chemical calculations and Monte Carlo simulation techniques are used, and both confirmed the experimental results.

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Effect of immersion time on the electrochemical behaviour of AZ31B alloy

Cited by 20 publications

References 35 publications

Effect of KOH Concentration on the Microstructure and Electrochemical Properties of MAO-Coated Mg Alloy AZ31B

Effect of KOH Concentration on the Microstructure and Electrochemical Properties of MAO-Coated Mg Alloy AZ31B

Novel optimization technique to determine polarization characteristics of a corroding metal

Corrosion Inhibition of Mild Steel in Sulfuric Acid by a Newly Synthesized Schiff Base: An Electrochemical, DFT, and Monte Carlo Simulation Study

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