Corrosion inhibition of mild steel in acidic media using newly synthesized heterocyclic organic molecules

Fekry, Amany M.; Ameer, M.A.

doi:10.1016/j.ijhydene.2010.04.111

Cited by 83 publications

(32 citation statements)

References 24 publications

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“…It can also be seen from the plots that there is no appreciable shift in the corrosion potential value (Ecorr) on the addition of 1,2,3benzotriazole to the corrosion medium and also on increasing the concentration of 1,2,3 benzotriazole. If the displacement in corrosion potential is more than ±85 mV with respect to corrosion potential of the blank, then the inhibitor can be considered as a cathodic or anodic type [15]. However, the maximum displacement in the present study is ±35 mV, which indicates that 1,2,3benzotriazole is a mixed type inhibitor.…”

Section: Potentiodynamic Polarization Measurementscontrasting

confidence: 56%

Effect of 1,2,3benzotriazole on the corrosion of aged 18Ni250 grade Maraging steel in Phosphoric acid solution

Naik¹,

Nayak

Girish³

et al. 2018

IOP Conf. Ser.: Mater. Sci. Eng.

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Titanium nitride (TiN) precipitation in a maraging steel during the vacuum arc remelting (VAR) process -Inclusions characterization and modeling V Descotes, J-P Bellot, V Perrin-Guérin et al. Abstract:The 18 Ni 250 grade maraging steel is a potential high strength steel for advanced technologies such as aerospace, nuclear, and sporting goods. Phosphoric acid and Nitric acid solutions are used in pickling of delicate and precision items where re-rusting after pickling has to be avoided. The present work addresses the study of corrosion behaviour and inhibition using 1,2,3 benzotriazole of aged 18 Ni 250 grade maraging steel in phosphoric acid medium at higher concentration by Potentiodynamic Polarization Technique. The corrosion rates were determined in 1M, 1.5M and 2M by Tafel extrapolation technique in the temperature range 30 0 C-50 0 C with different concentrations of inhibitor. The results indicate that the corrosion rate increases with increase in acid concentration and temperature.Inhibition efficiency of 1,2,3benzotriazolewas found to increase with the increase in 1,2,3 benzotriazole concentration and decrease with the increase in temperature.The activation energy Ea and other thermodynamic parameters (∆G˚, ∆H # and ∆S # ) have been evaluated and discussed. The standard free energy of adsorption ∆G˚ads values indicates that the adsorption is of mixed type. Scanning electron microscopy (SEM) study confirmed the formation of an adsorbed protective film on the metal surface.

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Section: Potentiodynamic Polarization Measurementscontrasting

confidence: 56%

Effect of 1,2,3benzotriazole on the corrosion of aged 18Ni250 grade Maraging steel in Phosphoric acid solution

Naik¹,

Nayak

Girish³

et al. 2018

IOP Conf. Ser.: Mater. Sci. Eng.

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“…The material characterization results confirm the hydroxyapatite coating is formed on the AZ31 magnesium alloy. Some scholars [38,45] suggest that the formation is due to the hydroxyl groups of AHEC adsorbing Ca 2+ in solution. This forms positively charged groups of the surface.…”

Section: Characterization Of the Samples Surfacesmentioning

confidence: 99%

Preparation and Characterization of Aminated Hydroxyethyl Cellulose-Induced Biomimetic Hydroxyapatite Coatings on the AZ31 Magnesium Alloy

Zhu

Sun

et al. 2017

Metals

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Abstract:The purpose of this work is to improve the cytocompatibility and corrosion resistance of magnesium alloy in the hope of preparing a biodegradable medical material. The aminated hydroxyethyl cellulose-induced biomimetic hydroxyapatite coating was successfully prepared on AZ31 magnesium alloy surface with a sol-gel spin coating method and biomimetic mineralization. Potentiodynamic polarization tests and electrochemical impedance spectroscopy showed that the hydroxyapatite/aminated hydroxyethyl cellulose (HA/AHEC) coating can greatly improve the corrosion resistance of AZ31 magnesium alloy and reduce the degradation speed in simulated body fluid (SBF). The MTT [3-(4,5-dimethylthiazol-2-yl)-2,5-Diphenyltetrazolium bromide] method and cell morphology observation results showed that the HA/AHEC coating on AZ31 magnesium alloy has excellent cytocompatibility and biological activity.

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“…The values of attractive parameter (a) are negative, indicating that repulsion exists in the adsorption layer. The equilibrium constant K ads is related to the standard free energy of adsorption (∆G ads ) with the following equation (Fekry & Ameer 2010):…”

Section: Adsorption Isothermmentioning

confidence: 99%

Inhibition effect of potassium iodide on the corrosion of carbon steel (XC 38) in acidic medium

Attar¹,

Larabi²,

Harek³

2014

International Journal of Advanced Chemistry

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Corrosion inhibition of mild steel in acidic media using newly synthesized heterocyclic organic molecules

Cited by 83 publications

References 24 publications

Effect of 1,2,3benzotriazole on the corrosion of aged 18Ni250 grade Maraging steel in Phosphoric acid solution

Effect of 1,2,3benzotriazole on the corrosion of aged 18Ni250 grade Maraging steel in Phosphoric acid solution

Preparation and Characterization of Aminated Hydroxyethyl Cellulose-Induced Biomimetic Hydroxyapatite Coatings on the AZ31 Magnesium Alloy

Inhibition effect of potassium iodide on the corrosion of carbon steel (XC 38) in acidic medium

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