2-hydrazino-6-methyl-benzothiazole as an effective inhibitor for the corrosion of mild steel in acidic solutions

Ajmal, Mohammad; Mideen, A. Sheik; Quraishi, M. A.

doi:10.1016/0010-938x(94)90110-4

Cited by 236 publications

(88 citation statements)

References 9 publications

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“…It is seen from the results that thiadiazoles do not shift E corr values significantly, thereby suggesting that they are mixed type inhibitors. This type of behaviour has been observed for mild steel in acid solution containing 2-hydrazino-6-methylbenzothiazole [36].…”

Section: Polarization Measurementsmentioning

confidence: 83%

Influence of Some thiadiazole derivatives on corrosion inhibition of mild steel in formic and acetic acid media

Rafiquee¹,

Khan²,

Saxena³

et al. 2007

Port. Electrochim. Acta

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2-amino-1, 3, 4-thiadiazoles (AT), 2-amino-5-methyl-1, 3, 4-thiadiazoles (AMT), 2-amino-5-ethyl -1, 3, 4-thiadiazoles (AET) and 2-amino-5-propyl -1, 3, 4-thiadiazoles (APT) were synthesized. FT-IR and NMR studies were done in order to confirm the composition of the synthesized inhibitors. These compounds were evaluated as inhibitors for mild steel in 20% formic acid and 20% acetic acid by weight loss, potentiodynamic polarization and electrochemical impedance techniques. Scanning electron microscopic study (SEM) was also used to investigate the surface morphology of inhibited and uninhibited metal samples. The inhibition efficiency of these compounds was found to vary with the inhibitor concentration, immersion time, temperature and acid concentration. The adsorption of these compounds on the steel surface from both acids were found to obey Langmuir's adsorption isotherm. These compounds are mixed type inhibitors in both acid solutions. Various thermodynamic parameters (E a , ∆G ads , ∆Q, ∆H, ∆S, t 1/2 ) have also been calculated to investigate the mechanism of corrosion inhibition. Electrochemical impedance study was used to investigate the mechanism of corrosion inhibition.

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Section: Polarization Measurementsmentioning

confidence: 83%

Influence of Some thiadiazole derivatives on corrosion inhibition of mild steel in formic and acetic acid media

Rafiquee¹,

Khan²,

Saxena³

et al. 2007

Port. Electrochim. Acta

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“…Then they were dried in desiccator for 24 hour and reweighted. Mass loss measurements were performed according to ASTM method described previously [15,16].…”

Section: Weight Loss Measurementsmentioning

confidence: 99%

Preparation and Study of Some Pyridinium Chloride Derivatives as Corrosion Inhibitors for Mild-Steel in 1M H2SO4 Aqueous Solution

Mahmood¹,

Shihab²

2015

JNUS

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Pyridinium chloride derivatives, namely: 1-benzyl-4-(2-cyclohexylidenehydrazinecarbonyl) pyridinium chloride, C1; 1-benzyl-4-(2-(1-phenylethylidene) hydrazinecarbonyl) pyridinium chloride, C2; 1-benzyl-4-(2-(diphenylmethylene)hydrazinecarbonyl) pyridinium chloride, C3, were prepared and studied as corrosion inhibitors for mild steel in 1M H2SO4 aqueous solution using weighting loss measurements for 24 hours at 30 o C. The results showed that inhibition efficiency for all pyridinium chloride derivatives have rapprochement in value with the highest concentration. Increasing in inhibitor concentration accompanies with corrosion rate decreases, inhibition efficiencies increase and surface coverage degree increases. The free energy values of adsorption revealed physisorption effect for (C1, C2, and C3) and gave useful information to predict the interaction between the surface of metal and the organic molecules as corrosion inhibitors.

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“…It has been commonly recognized that an organic inhibitor usually promotes the formation of a chelate on a metal surface by transferring electrons from the organic compound to the metal and forming a coordinate covalent bond during the chemical adsorption (Ajmal et al, 1994). 2-By increasing inhibitor concentration beyond the optimum level, the corrosion inhibition decreased because of the random distribution of the prepared inhibitor, which may have bloomed to the surface and attracted water molecules to the cured film through its hydrophilic groups.…”

Section: Anticorrosion Performance Evaluation Of Eso/ Aa Adductmentioning

confidence: 99%

Enhancement of Corrosion Protection of UV Curable Coatings in the Presence of Aliphatic and Aromatic Amine Compounds

2015

Egypt. J. Rad.Sci.

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ORROSION inhibitors based on aromatic amine; 4-carboxy aniline (CA) and aliphatic amine; acrylamide (AA) were prepared. CA and AA amine compounds allowed reacting with epoxidized sunflower oil (ESO) at 130 o C for 3h to prepare amine adducts ESO/ CA and ESO/ AA, respectively. The adducts were characterized by IR-spectroscopy and oxirane content determination. Different ratio of prepared adduct were added in coating formulations based on epoxy acrylate oligomers to evaluate them as corrosion inhibitors on metal substrates under UV radiation. Corrosion resistance tests and wt loss values were measured for all cured films, in addition to the physical and mechanical measurements. It was found that the coating films containing CA have high resistance for corrosion of metal than AA and the optimum concentration is 0.5%.

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2-hydrazino-6-methyl-benzothiazole as an effective inhibitor for the corrosion of mild steel in acidic solutions

Cited by 236 publications

References 9 publications

Influence of Some thiadiazole derivatives on corrosion inhibition of mild steel in formic and acetic acid media

Influence of Some thiadiazole derivatives on corrosion inhibition of mild steel in formic and acetic acid media

Preparation and Study of Some Pyridinium Chloride Derivatives as Corrosion Inhibitors for Mild-Steel in 1M H2SO4 Aqueous Solution

Enhancement of Corrosion Protection of UV Curable Coatings in the Presence of Aliphatic and Aromatic Amine Compounds

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