Kinetics and thermodynamics of aluminium dissolution in 1.0M sulphuric acid containing chloride ions

Abdel‐Gaber, A. M.; Abd-El-Nabey, B.A.; Sidahmed, Ibrahim M.; El-Zayady, A.M.; Saadawy, M.

doi:10.1016/j.matchemphys.2005.09.023

Cited by 73 publications

(27 citation statements)

References 25 publications

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“…Aluminium and its alloys [1,2] are used in many applications in industries (aerospace, household industries, electronic devices, food industry, etc.) due to their low price, high electrical capacity, and their high energy density.…”

Section: Introductionmentioning

confidence: 99%

Inhibition of Aluminium Corrosion in 1.0 M HCl by Caffeine: Experimental and DFT Studies

Beda

Niamien

Bile

et al. 2017

Advances in Chemistry

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Aluminium corrosion inhibition in 1.0 M hydrochloric acid solution by caffeine has been studied using mass loss technique and quantum chemical calculations based on DFT. The inhibition efficiency was found to increase with increasing concentration of caffeine but decreases with a rise in temperature. The molecule shows the highest inhibition efficiency of 74% at 10 −2 M for = 303 K. The experimental data were used to fit isotherms including Langmuir, Temkin, Freundlich, and El-Awady. The best fits were obtained with the Langmuir model and the kinetic-thermodynamic adsorption model of El-Awady. However, it was found that the adsorption parameters suit well with the isotherm of El-Awady which was chosen as the appropriate isotherm. To distinguish between physisorption and chemisorption, the Dubinin-Radushkevich adsorption model was used. The thermodynamic parameters governing the adsorption of caffeine onto aluminium and that of the metal dissolution were calculated and discussed. DFT study gave further insight into the mechanism of the inhibiting action of caffeine.

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Section: Introductionmentioning

confidence: 99%

Inhibition of Aluminium Corrosion in 1.0 M HCl by Caffeine: Experimental and DFT Studies

Beda

Niamien

Bile

et al. 2017

Advances in Chemistry

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“…It is reported [15,16] that the breakdown (pitting) potential (E b ) shows logarithmic dependence on chloride ion concentration (C cl − ) of the form:…”

Section: Effect Of Concentration Of Nacl On the Polarization Behavioumentioning

confidence: 99%

“…The corrosion rate, V, in mils per year for the dissolution of metal is related to the corrosion current density, i corr , using the formula [16]:…”

Section: Kinetics Of the Corrosion Of 304 Ss In Nacl Solutionmentioning

confidence: 99%

Kinetics of Pitting Dissolution of Austenitic Stainless Steel 304 in Sodium Chloride Solution

Saadawy

2012

ISRN Corrosion

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The effect of addition of chloride ion on the corrosion of stainless steel 304 in Na 2 SO 4 solution under constant ionic strength conditions at 30• C was studied using potential-time and potentiodynamic polarization techniques and it was found that the addition of chloride ion reduces the growth of protective passive film on the surface and increase corrosion current. The kinetics of dissolution in sodium chloride solution (0.05-0.5M) at 30• C was also studied and the kinetic rate equation was derived and was found to verify the following relationship: V = k obs C Cl − where k obs = k(K 1 K 2 C H2O /(C H + +K 1 C H + C 2 H2O )) Fe.

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“…In addition, aluminum is justified by low price, high electrical capacity and high energy density [1]. The most important feature of aluminum is its corrosion resistance due to the present of a thin, adherent and protective surface oxide film.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Performances and Corrosion Inhibition of Aa6061 in Tropical Seawater

Rosliza

Senin

Nik

2017

AJSTD

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The corrosion performances of AA6061 aluminum alloy in tropical seawater was investigated using potentiodynamic polarization, electrochemical impedance spectroscopy (EIS) and their morphology was characterized by the scanning electron microscopy (SEM). The results showed that the presence of sodium benzoate as an inhibitor significantly decrease the corrosion current densities (i corr ), corrosion rates and double layer capacitance (C dl ), whilst increasing the polarization resistance (R p ). The scanning electron microscopy (SEM) images indicated that the mechanism of charge transfer and the formation of thin film have been taken place on the specimens.

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Kinetics and thermodynamics of aluminium dissolution in 1.0M sulphuric acid containing chloride ions

Cited by 73 publications

References 25 publications

Inhibition of Aluminium Corrosion in 1.0 M HCl by Caffeine: Experimental and DFT Studies

Inhibition of Aluminium Corrosion in 1.0 M HCl by Caffeine: Experimental and DFT Studies

Kinetics of Pitting Dissolution of Austenitic Stainless Steel 304 in Sodium Chloride Solution

Electrochemical Performances and Corrosion Inhibition of Aa6061 in Tropical Seawater

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