Heterocyclic corrosion inhibitors

Quraishi, M. A.; Chauhan, Dheeraj Singh; Saji, Viswanathan S.

doi:10.1016/b978-0-12-818558-2.00001-1

Cited by 35 publications

(20 citation statements)

References 19 publications

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“…Each measurement was repeated three times, and only the average values were reported. New sets of corrosive solutions and mild steels were used for each repetition as the polarization measurement is a destructive technique that alters the electrode surface [ 26 ]. After completing the measurement, the data was plotted into a Tafel curve, and the electrochemical parameters such as the corrosion potential, Tafel slopes, corrosion current, corrosion rate and inhibition efficiency were computed.…”

Section: Methodsmentioning

confidence: 99%

Innovative Method for Longer Effective Corrosion Inhibition Time: Controlled Release Oil Palm Empty Fruit Bunch Hemicellulose Inhibitor Tablet

et al. 2021

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This study aims to develop a controlled release oil palm empty fruit bunch hemicellulose (EFB-H) inhibitor tablet for mild steel in 1 M HCl. As plant extracts tend to deteriorate at longer immersion time, limiting its industrial applicability, we attempted to lengthen the inhibition time by forming a controlled release inhibitor tablet. Electrochemical methods (potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS)) were employed to investigate the efficiency and mechanism of the inhibition. An optimum dosage and immersion time was determined via Response Surface Methodology (RSM). EFB-H tablet was formulated using D-optimal mixture design, and its anticorrosion action at extended immersion time was compared with EFB-H powder. PDP measurement revealed that EFB-H is a mixed type inhibitor. RSM optimization unveiled that the optimum point for a maximum inhibition efficiency (87.11%) was at 0.33 g of EFB-H and 120 h of immersion time. Tablet T3 with EFB-H to gum Arabic to hydroxypropyl methylcellulose ratio of 66:0:34 portrayed the best tensile strength (0.243 MPa), disintegration time (152 min) and dissolution behavior. EFB-H tablet exhibited a longer-lasting inhibition effect than powder, which was 360 h as compared to 120 h for powder. Overall, EFB-H tablet has been successfully developed, and its enhanced effective inhibition time has been experimentally proven.

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Section: Methodsmentioning

confidence: 99%

Innovative Method for Longer Effective Corrosion Inhibition Time: Controlled Release Oil Palm Empty Fruit Bunch Hemicellulose Inhibitor Tablet

et al. 2021

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“…In all cases, the lone pair electrons on the hetero atoms as well as π electrons in the molecules are responsible for the inhibitive activity. Organic inhibitors adsorb on the metal surface, forming a film [ 21 , 22 ].…”

Section: Anticorrosion Possibilitiesmentioning

confidence: 99%

Formation of Self-Assembled Anticorrosion Films on Different Metals

Telegdi

2020

Materials

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The review will first discuss shortly the phenomenon of corrosion and enroll some general possibilities to decrease the rate of this deterioration. The stress will be laid upon the presentation of anticorrosive self-assembled molecular (SAM) layers as well as on the preparation technology that is a simple technique, does not need any special device, and can be applied on different solids (metals or non-metals) alone or in combination. The paper groups the chemicals (mainly amphiphiles) that can develop nanolayers on different pure or oxidized metal surfaces. The history of the self-assembled molecular layer will be discussed from the beginning of the first application up to now. Not only the conditions of the nanofilm preparation as well as their characterization will be discussed, but the methods that can evaluate the corrosion-inhibiting efficiency of the SAM layers under a corrosive environment will be demonstrated as well.

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“…They are the most significant class of compounds, with a wide variety of applications from nuclear-level actions to propelling space flight. They are the main structural partners in natural 1 and pharmaceutical products, 2,3 semiconductors, 4 agrochemicals, 5 antioxidants, 6 as copolymers, 7 corrosion inhibitors, 8 veterinary products, dye stuffs 9 and rocket propellants. 10 Almost all biofunctional chemical moieties in living organisms, such as DNA, RNA, vitamins, hormones, ATP, and even chemical messengers, are constructed with these heteroatom-possessing rings.…”

Section: Introductionmentioning

confidence: 99%