Assessment of the inhibition efficiency of 3,4-diaminobenzonitrile against the corrosion of steel

Sığırcık, Gökmen; Tüken, Tunç; Erbil, M.

doi:10.1016/j.corsci.2015.10.036

Cited by 159 publications

(45 citation statements)

References 47 publications

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“…The slope of the central linear region of the log |Z | versus logƒ curve is approximating to −1 or slightly lower than −1 because the ideal capacitor is not obtained within the electrolyte–substrate interface. This phenomenon is caused by the special structure of double electric layer . It is also found in log|Z| versus logƒ spectrum that the addition of inhibitors makes the values of |Z| in low frequency region raise approximately one order of magnitude.…”

Section: Resultsmentioning

confidence: 91%

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New surfactants N‐alkyl‐N,N‐dimethyl‐N‐(3‐thienylmethylene)ammonium bromides: Preparation and anticorrosion evaluation

Chen

Jiang

Cheng

et al. 2019

Materials & Corrosion

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A new series of N‐alkyl‐N,N‐dimethyl‐N‐(3‐thienylmethylene)ammonium bromides (designated as NTA‐n, n = 8, 10, 12, 14, and 16) were synthesized. The electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization showed that NTA‐n could protect availably X70 steel from attack of HCl with an inhibition efficiency of about 95%. And the inhibition ability follows the following sequence: NTA‐8 < NTA‐10 < NTA‐12 < NTA‐14 < NTA‐16, suggesting that prolonging alkyl chain may enhance the inhibition capacity of the molecules. Theoretical investigation backs up well the experiment results. The correlation of theoretical calculation with the experiment results illustrated clearly double logarithmic relations between the corrosion current and the computed quantum chemical parameters such as the highest occupied molecular orbital energy ( E HOMO), energy gap (ΔE), molecular volume ( ν), electronegativity ( χ), the total energy of iron crystal with the adsorbed inhibitor molecule ( E total), the interaction energy of Fe (1 0 0) surface and inhibitor molecules ( E inhibitor), while an equation resembling Hammet relation was existed between the corrosion currents and the fraction of electrons transfer (ΔN). These linear correlations suggest the relation of the inhibitor structure with its inhibition activity: long alkyl chain and electron donating groups in NTA‐n will enhance the corrosion efficiency.

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Section: Resultsmentioning

confidence: 91%

“…This phenomenon is caused by the special structure of double electric layer. [38] It is also found in log|Z| versus logƒ spectrum that the addition of inhibitors makes the values of |Z| in low frequency region raise approximately one order of magnitude. These results elaborate the favorable inhibition performance of NTA-n.…”

Section: Polarization Curve Analysismentioning

confidence: 97%

New surfactants N‐alkyl‐N,N‐dimethyl‐N‐(3‐thienylmethylene)ammonium bromides: Preparation and anticorrosion evaluation

Chen

Jiang

Cheng

et al. 2019

Materials & Corrosion

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“…Burada uygun bir fit yapabilmek için CPE sabit faz elementi kullanılmıştır. [10]. 0.5M HCl çözeltisi içinde SDDT moleküllerinin metal-çözelti ara yüzeyine adsorplanarak korozyon reaksiyonunu önlemeye çalıştıklarını göstermektedir.…”

Section: Deneysel çAlişmalar (Experimental Method-process)unclassified

Sodyum Di̇eti̇l Di̇ti̇yokarbamat Tri̇hi̇dratin İnhi̇bi̇tör Olarak Asi̇di̇k Ortamda Yumuşak Çeli̇k Korozyonuna Elektroki̇myasal Davranişinin İncelenmesi̇

Sarı¹,

Yıldız²,

Dehri³

2017

NWSA

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Inhibitionperformance of sodium diethyidithiocarbaminat trihydrat (SDDT) against corrosion on mild steel (MS) in 0.5M HCl solution investigated by potentiodynamic polarization, electrochemical impedance spectroscopy (EIS) and linear polarization resistance (LPR) methods. The inhibition efficiency increased with increasing of inhibitor concentration. The potentiodynamic polarization results indicated that all the studied inhibitors act as mixed type. SDDT adsorption on the MS surface obeyed the isotherm of Langmuir and the thermodynamic parameters; K ads , ∆G ○ ads were also calculated and discussed.

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“…Then it adsorbs on the metallic materials and mitigates corrosion. Organic compounds in general have been extensively investigated as corrosion inhibitors for steel in different corrosive environments (Abouchane et al 2015;Adardour et al 2015;Ghanbari et al 2010;Migahed et al 2015;Sıgırcık et al 2016;Zhang et al 2015Zhang et al , 2016. These compounds usually contain different heteroatoms, such as N, S, O, and P, which act as active centres for adsorption on the metal surface.…”

Section: Introductionmentioning

confidence: 99%

Corrosion inhibition and surface analysis of amines on mild steel in chloride medium

et al. 2016

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In this study, the corrosion inhibition effectiveness of eight amines, i.e. 2-ethylhexyl amine, aniline, benzylamine, butylamine, ethylamine, isopropylamine, octylamine, and triethanolamine, on C15 grade mild steel in 3 wt% NaCl solution is reported. The corrosion inhibition performance of the amines was studied using immersion tests at 25 and 70°C, with and without the addition of KI as a possible intensifier. Among the inhibitors tested at 0.1 wt% concentration, the lowest corrosion rates were obtained for specimens immersed in solutions containing 2-ethylhexyl amine at 25°C and triethanolamine at 70°C. The highest inhibition effectiveness at 25°C among all amines tested was obtained for 1.0 wt% butylamine with the addition of 0.5 wt% KI, while at 70°C the lowest corrosion rate was obtained for specimens inhibited with 1.0 wt% isopropylamine. Surface analysis was subsequently performed on specimens inhibited by the most effective inhibitors. Adsorption of the selected amines on the C15 grade mild steel surface was confirmed by ATR-FTIR. 3D-profilometry showed a reduction in the surface roughness (less corroded) for the specimens inhibited with these inhibitors compared to the non-inhibited specimens.Contact angle measurements showed that all of the tested specimens were hydrophilic.

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Assessment of the inhibition efficiency of 3,4-diaminobenzonitrile against the corrosion of steel

Cited by 159 publications

References 47 publications

New surfactants N‐alkyl‐N,N‐dimethyl‐N‐(3‐thienylmethylene)ammonium bromides: Preparation and anticorrosion evaluation

New surfactants N‐alkyl‐N,N‐dimethyl‐N‐(3‐thienylmethylene)ammonium bromides: Preparation and anticorrosion evaluation

Sodyum Di̇eti̇l Di̇ti̇yokarbamat Tri̇hi̇dratin İnhi̇bi̇tör Olarak Asi̇di̇k Ortamda Yumuşak Çeli̇k Korozyonuna Elektroki̇myasal Davranişinin İncelenmesi̇

Corrosion inhibition and surface analysis of amines on mild steel in chloride medium

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