Corrosion Behavior of AISI 316 Stainless Steel in Formic and Acetic Acid Solutions

Sekine, Isao; Masuko, A.; Senoo, Kengo

doi:10.5006/1.3583900

Cited by 38 publications

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“…Corrosion studies on metals in organic acid solutions are scarce in comparison with similar studies in mineral acids [1][2][3][4]. Mild steel is used in fabrication of reaction vessels, storage tanks etc.…”

Section: Introductionmentioning

confidence: 99%

Thiazoles as corrosion inhibitors for mild steel in formic and acetic acid solutions

Quraishi

Sharma

2005

J Appl Electrochem

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2-(N,N-dimethylamino) benzylidene imino-4-(4-methyl phenyl)-1,3-thiazole (DIMPT), 2-benzylidene imino-4-(4-methyl phenyl)-1,3-thiazole (BIMPT), 2-salicylidene imino-4-(4-methyl phenyl)-1,3-thiazole (SIMPT) and 2-cinnamylidene imino-4-(4-methyl phenyl)-1,3-thiazole (CIMPT) were synthesized in the laboratory and their influence on the inhibition of corrosion of mild steel in 20% formic acid and 20% acetic acid was investigated by weight loss and potentiodynamic polarization techniques. The inhibition efficiency of these compounds was found to vary with their nature and concentration, temperature, immersion time and acid concentration. The values of activation energy and free energy of adsorption of the thiazoles were calculated to investigate the mechanism of corrosion inhibition. The adsorption of all the thiazoles on mild steel surface was found to obey Langmuir adsorption isotherm. The potentiodynamic polarization result revealed that the compounds studied are mixed type inhibitors. Electrochemical impedance spectroscopy was used to investigate the mechanism of corrosion inhibition.

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Section: Introductionmentioning

confidence: 99%

Thiazoles as corrosion inhibitors for mild steel in formic and acetic acid solutions

Quraishi

Sharma

2005

J Appl Electrochem

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“…Stainless steels also proved to be very resistant to acetic acid corrosion in a wide range of temperature and concentrations, but they risk failures if impurities, such as inorganic acids, and salts are present in the process fluid [7][8][9][10][11][12][13][14]. The presence of such impurities makes the environment more complex due to the modification of the chemical properties of acids, i.e., the medium aggressiveness.…”

Section: Introductionmentioning

confidence: 99%

Corrosion of an UNS S31803 distillation column for acetic acid recovery

Colombo

Trasatti

2015

Engineering Failure Analysis

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“…Corrosion studies on metals in organic acid solutions are scarce in comparison with similar studies in mineral acids [1][2][3][4]. The presence of reactive carboxyl group -COOH in organic acids makes them a basic building block for many compounds such as drugs, pharmaceuticals, plastics and fibers.…”

Section: Introductionmentioning

confidence: 99%

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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Corrosion Behavior of AISI 316 Stainless Steel in Formic and Acetic Acid Solutions

Cited by 38 publications

References 0 publications

Thiazoles as corrosion inhibitors for mild steel in formic and acetic acid solutions

Thiazoles as corrosion inhibitors for mild steel in formic and acetic acid solutions

Corrosion of an UNS S31803 distillation column for acetic acid recovery

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

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