Corrosion Inhibition

Lindsay, Robert; Kokalj, Anton

doi:10.3390/met8100821

Cited by 3 publications

(2 citation statements)

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“…The obtained results, such as corrosion rates (W) and inhibition efficiencies (η w ) at each studied concentration, are given in Table 1. Equations (2) and 3are applied to estimate the inhibition efficiency (η w ) and the surface coverage degree (θ) [27].…”

Section: Gravimetric Measurementsmentioning

confidence: 99%

“…The industrial acid cleaner and acid purification treatments are extremely aggressive and can lead to considerable corrosion of metals in these environments. One of the many ways to minimize metal corrosion is using inhibitors, which may be considered as the safest and cheapest option [2][3][4][5][6]. The inhibitors work at a proper concentration by acting at the interface of the exposed metal surface and aggressive media.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Evaluation of 2-Mercaptobenzimidazole Derivatives as Corrosion Inhibitors for Mild Steel in Hydrochloric Acid

Lgaz

Masroor

Chafiq

et al. 2020

Metals

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This research aimed to develop a better understanding of the corrosion inhibition of the mild steel in acidic medium by new organic molecules. For this purpose, two new compounds namely, 2,3-dihydrobenzo[4,5]imidazo[2,1-b]thiazole (2-BIT) and 3,4-dihydro-2H-benzo[4,5]imidazo[2,1-b]thiazole (3-BIT) were synthesized and evaluated for mild steel (MS) corrosion in HCl. Analyses were carried out using weight loss measurements, electrochemical techniques, and scanning electron microscope (SEM). The adsorption of inhibitors onto the steel surface follows the Langmuir adsorption model. Generally, results showed that the corrosion inhibition efficiency of the investigated molecules was found to increase with increased concentration of inhibitors. Electrochemical tests, i.e., electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization (PDP) techniques, showed that the addition of our investigated inhibitors decreases the dissolution of the metal and generally act as mixed-type inhibitors. In addition, the influence of temperature (from 303 to 333 K) on the corrosion inhibition was studied, and the results demonstrated that with an increase in temperature, the inhibition efficiency decrease. SEM results confirmed that the inhibition process is due to a protective film that prevents corrosion. Similarly, the results showed that the inhibitory efficiencies reach 93% at 5 × 10−3 M in the case of inhibitor 3-BIT. These results revealed that this compound could effectively control and reduce the corrosion rate of mild steel in the corrosion test solution.

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Section: Gravimetric Measurementsmentioning

confidence: 99%