Corrosion inhibition of two Schiff base complexes on the mild steel in 1M HCl solution

Taha, Rania H.; Mohamed, Lamiaa Z.; Ghanem, Wafaa A.

doi:10.21608/ejchem.2019.11232.1722

Cited by 9 publications

(12 citation statements)

References 23 publications

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“…Figure S3 shows SEM images acquired from unexposed and exposed specimen coupons in 1 M HCl solution for one day with a blank sample and 500 ppm for Cd (II) and UO 2 (II) complexes. The morphology of the mild steel surface indicated the development of a protective surface film that prevents metal dissolving on HCl solution, retards hydrogen evolution and contributes to the mixed-type inhibitory action [ 83 ].…”

Section: Investigationmentioning

confidence: 99%

Innovation of Imine Metal Chelates as Corrosion Inhibitors at Different Media: A Collective Study

El‐Lateef

El‐Dabea

Khalaf

et al. 2022

IJMS

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The corrosion inhibition of transition metal chelates derived from Schiff base ligands was tested for (mild, copper, stainless, aluminum and carbon) steel in various concentrations of (HCl, HNO3 and H2SO4) acidic medium at 25 °C through (weight loss, potentiodynamic polarization, polarization curves, electrochemical impedance spectroscopy (EIS) and open circuit potential measurements (OCP)) techniques. The studied compounds were identified with various spectral, analytical and physico-chemical techniques. It was observed that the investigated compounds had a significant inhibitory impact on the corrosion of diverse steels in the medium investigated. The analysis shows that increasing the dose of the studied complexes improves the corresponding inhibitory efficiency values. Negative results of Gibb’s free adsorption energy (ΔGads0) prove the suppression process’s spontaneous and physical adsorption, which contradicts the Langmuir adsorption isotherm. As a result of this insight, a novel bridge between nuclearity driven coordinated inorganic chemistry and materials, as well as corrosion control, has been built. This review provides an overview of the use of Schiff bases and associated transition metals as potential corrosion inhibitors, including the factors that influence their application.

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Section: Investigationmentioning

confidence: 99%

Innovation of Imine Metal Chelates as Corrosion Inhibitors at Different Media: A Collective Study

El‐Lateef

El‐Dabea

Khalaf

et al. 2022

IJMS

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“…The Thermodynamic parameters enthalpy and entropy of activation were calculated using the transition state Eq. 5 [1,20]. 4.…”

Section: (4) Rtmentioning

confidence: 99%

Corrosion Behavior of Fe-35Ni-22Cr and Fe-17Ni-17Cr Alloys in Acid Pickling Solutions

Gaber

2020

Egypt. J. Chem.

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This work aims to study the corrosion behavior of two alloys Fe-35Ni-22Cr and Fe-17Ni-17Cr in acid pickling solutions. The corrosion behavior of two alloys in HCl and H2SO4 was studied using the weight-loss method and potentiodynamic polarization, at a different time at 30 °C, 40 °C and 60 °C. The morphology of two alloys was analyzed by scanning electron microscope (SEM) and energy dispersive X-ray (EDS) analysis. The effect of temperature at constant acid concentration solutions has a strong influence on the corrosion rate of two alloys Fe-35Ni-22Cr and Fe-17Ni-17Cr. The activation energy ( ), enthalpy (∆ ), entropy (∆ ) and free energy (∆ ) were calculated and discussed. Results obtained from weight loss and potentiodynamic measurements were in good agreement and confirmed that Fe-35Ni-22Cr alloy is a higher corrosion resistance than Fe-17Ni-17Cr alloy in HCl and H2SO4 acid solutions.

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“…The enthalpy of activation and entropy of activation were determined using transition state Eq. 7 [22,23]. (…”

Section: ) Rtmentioning

confidence: 99%

Corrosion behavior of Ni and Ni-base alloy in acidic solutions

Mohamed¹

2020

Egypt. J. Chem.

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The corrosion behavior of pure Ni and 65Ni-24Cr-10Mo alloy in HCl and H2SO4 solutions were investigated using weight-loss and electrochemical methods. The effects of temperature and acidic media were studied to define the main differences in the corrosion behavior of these materials. The results of both techniques revealed lower values of corrosion rates for the 65Ni-24Cr-10Mo alloy compared to pure Ni. Generally, the corrosion rates for both materials increase with increasing temperature in both acids with higher rates in HCl compared to H2SO4 at all conditions. Results of weight-loss and potentiodynamic tests were in a good agreement and indicated that the alloy 65Ni-24Cr-10Mo is a high resistance to corrosion in HCl and H2SO4 acidic solutions than pure Ni. The activation energies ( ) of the dissolution process of Ni and alloy have calculated. The activation energy of Ni in HCl is 18 kJ/mole and in H2SO4 is 20 kJ/mole where for the alloy in HCl is 18 kJ/mole and in H2SO4 is 32 kJ/mole.

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Corrosion inhibition of two Schiff base complexes on the mild steel in 1M HCl solution

Cited by 9 publications

References 23 publications

Innovation of Imine Metal Chelates as Corrosion Inhibitors at Different Media: A Collective Study

Innovation of Imine Metal Chelates as Corrosion Inhibitors at Different Media: A Collective Study

Corrosion Behavior of Fe-35Ni-22Cr and Fe-17Ni-17Cr Alloys in Acid Pickling Solutions

Corrosion behavior of Ni and Ni-base alloy in acidic solutions

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