The inhibition performance of quinoa seed on corrosion behavior of carbon steel in the HCl solution; theoretical and experimental evaluations

Mobtaker, Haneih; Azadi, Mahboobeh; Hassani, Nasim; Neek-Amal, M.; Rassouli, Maryam; Bidi, Mohammad Amin

doi:10.1016/j.molliq.2021.116183

Cited by 31 publications

(11 citation statements)

References 39 publications

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“…Thus, based on the Tafel polarization data, a physical barrier would be formed by the mixture of molecules at the interface to reduce the hydrogen evolution at cathodic sites. A similar mechanism was also proposed by other research [ 13 , 17 , 36 ].…”

Section: Resultssupporting

confidence: 84%

The corrosion inhibition of carbon steel in 1 M HCl solution by Oestrus ovis larvae extract as a new bio–inhibitor

Mobtaker

Azadi²,

Rassouli³

2022

Heliyon

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Section: Resultssupporting

confidence: 84%

The corrosion inhibition of carbon steel in 1 M HCl solution by Oestrus ovis larvae extract as a new bio–inhibitor

Mobtaker

Azadi²,

Rassouli³

2022

Heliyon

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“…This caused more resistance for the diffusion of corrosive ions toward the specimen surface. Thus, the value of %R for the specimen PN-H was more than the specimen PN-L. More details about the calculation of %R were found in other research [21][22][23]. Other investigators [19,20] also reported that the corrosion resistance of nitrided surfaces increased in a NaCl solution.…”

Section: Microstructure Evaluationsmentioning

confidence: 65%

Effects of plasma nitriding process on the corrosion behavior of GJS700 nodular cast iron

Azadi¹,

Parast²,

Azadi³

2022

Surf. Topogr.: Metrol. Prop.

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In this paper, the effect of the plasma nitriding (PN) process on corrosion aspects of GJS700 nodular cast iron has been investigated. The gas ratio of N2:H2 is a variable parameter that changed the electrochemical properties of cast iron. Therefore, to study corrosion properties, Tafel polarization, electrochemical impedance spectroscopy (EIS), and gravimetric experiments were utilized in two corrosive mediums. Moreover, for more details, the evaluation of field emission scanning electron microscopy (FESEM) images plus the energy dispersive spectroscopy analysis was performed. Results showed that plasma nitrided surfaces with the gas ratio of N2:H2=9:1 had the highest resistance in 0.6 M NaCl solution. EIS results also demonstrated that the increase in the corrosion resistance of nitrided surfaces was about 56–86% compared to the cast iron without surface treatment. However, when nitrided surfaces were exposed to 1 M HCl solution, the PN process with both gas ratios was not an effective treatment to reduce the corrosion rate of cast iron. FESEM images showed that corrosion attacks such as pits, cracks, and corrosion products decreased significantly on surfaces with higher corrosion resistance. The weight loss measurements also depicted that specimens exhibited different corrosion behaviors in two utilized corrosive solutions. Consequently, the possible corrosion mechanism was suggested based on the obtained results.

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“…The EDX graphs also show that the amount of O 2-, which is a prerequisite for corrosion increases to 34.1 wt% on the MS surfaces when immersed with no inhibitor (Figure 19B) but decreases to 2 wt% in the presence of 800 ppm of inhibitor, resulting in obstruction from surface corrosion (Figure 19C). In Figure 19B, it is also seen that chloride ions (represented by Cl) and water molecules (represented by O) as corrosion products on the metal which was immersed without polyacrylamide-okra graft, which is evidence of corrosion products like iron hydroxide and iron chloride, which are absent in the inhibited solution (Mobtaker et al, 2021). It is also clear that in the uninhibited sample, the binding of chloride from the acid was higher than in the other samples.…”

Section: Surface Morphologymentioning

confidence: 90%

“…R ct values increase gradually with a concurrent general decrease in C dl values which is evidence of the formation of a protective film and a decrease in the available active sites for the corrosion reaction. This shows that the inhibitor molecules replaced the water molecules in the vicinity of the metal surface (Azzam et al, 2018;Mobtaker et al, 2021). Furthermore, a decrease in capacitance suggests that there is a drop in the local dielectric constant, and an increase in the thickness of the electrical double layer (Zarrok et al, 2012).…”

Section: Electrochemical Impedance Spectroscopymentioning

confidence: 99%

“…This is characteristic of mixed-type inhibitors Roy et al, 2014a). The small shifts in small shifts in the β a , and β c tafel slopes values are evidence that the inhibition mechanism occurs by the blocking of the reactive sites, and not alteration of the corrosion mechanism (Azzam et al, 2018;Zhang et al, 2020;Mobtaker et al, 2021). The inhibition efficiency was calculated from the measurements of I corr using the relationship in Eq.…”

Section: Potentiodynamic Polarisationmentioning

confidence: 99%

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Quantitative and qualitative analyses of grafted okra for corrosion inhibition of mild steel in acidic medium

Sulaimon

Murungi²,

Tackie-Otoo³

et al. 2023

Front. Chem.

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Introduction: Natural plant polymers demonstrate effective corrosion inhibition abilities, because of their numerous binding sites and excellent adsorption abilities.Methodology: In this study, the Box-Behnken method, gravimetric and electrochemical analyses were used to design and investigate the corrosion inhibition potential of a modified graft polymer of okra for mild steel in a 1M HCl medium. The influence of inhibitor concentration, temperature, and time were also investigated. Qualitatively, the Fourier Transform Infrared (FTIR) spectroscopy, Thermogravimetric Analysis (TGA), and Field emission scanning electron microscopy (FESEM) were used to characterize the extracts and evaluate the metal’s surface morphology.Results and discussion: The quantitative analyses showed that the modified natural polymer’s inhibition efficiency (IE) increased with concentration and reached 73.5% at 800 ppm, with a mixed-type mode of inhibition. From the response surface methodology, it was revealed that temperature influences the IE more than concentration and immersion time. The optimized IE using the desirability function showed the possibility of attaining 88.2% inhibition with inhibitor concentration at 142.3 ppm, temperature at 60.4°C, and an immersion time of 22.4 h. The new functional groups in the hybrid polymer revealed by FTIR analysis shows that grafting improved the inhibitor’s adsorption abilities. TGA analysis confirmed the extract’s high thermal stability, which highlights the inhibitor’s strong adsorption and efficiency for high temperatures. FESEM analysis indicated evidence of inhibitor adsorption onto the metal surface.Conclusion: These findings suggest that the grafting of okra with acrylamide enhances its inhibition properties and contributes to its functionality as a cost-effective plant-based alternative inhibitor against corrosion for mild steel facilities.

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The inhibition performance of quinoa seed on corrosion behavior of carbon steel in the HCl solution; theoretical and experimental evaluations

Cited by 31 publications

References 39 publications

The corrosion inhibition of carbon steel in 1 M HCl solution by Oestrus ovis larvae extract as a new bio–inhibitor

The corrosion inhibition of carbon steel in 1 M HCl solution by Oestrus ovis larvae extract as a new bio–inhibitor

Effects of plasma nitriding process on the corrosion behavior of GJS700 nodular cast iron

Quantitative and qualitative analyses of grafted okra for corrosion inhibition of mild steel in acidic medium

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