Peculiarities of protective efficiency of nitrogen containing inhibitors of steel corrosion

Цыганкова, Л. Е.; Вигдорович, В. И.; Shel, N. V.; Dubinskaya, E.V.

doi:10.17675/2305-6894-2013-2-4-304-310

Cited by 8 publications

(7 citation statements)

References 5 publications

(6 reference statements)

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“…The results of this calculation are given in Table 3 where one can see that the contribution of the corrosion product film to the total protective effect exceeds the inhibitor contribution for both inhibitor compositions under study. Analogous calculations have been previously conducted for other inhibitors [13]. As shown above, polarization measurements indicate that the anodic process is hindered in the presence of the inhibitors.…”

Section: Resultssupporting

confidence: 60%

Study of steel corrosion inhibition in media containing H2S and CO2 by impedance spectroscopy and polarization resistance methods

Цыганкова¹,

Esina²,

Вигдорович³

et al. 2014

Int. J. Corros. Scale Inhib.

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Inhibition of carbon steel corrosion by "INCORGAS" compositions in a NACE medium containing hydrogen sulfide and carbon dioxide was studied by electrochemical impedance spectroscopy and linear polarization resistance methods. Contribution of the inhibitor to the total protective effect of the "corrosion product film/inhibitor" system was calculated. Polarization measurements testify that the anodic process is hindered in the presence of the inhibitors. The same conclusion was made from the data of electrochemical impedance spectroscopy.

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Section: Resultssupporting

confidence: 60%

Study of steel corrosion inhibition in media containing H2S and CO2 by impedance spectroscopy and polarization resistance methods

Цыганкова¹,

Esina²,

Вигдорович³

et al. 2014

Int. J. Corros. Scale Inhib.

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“…Inhibitor I [79] 10 % solution of higher aliphatic amines C 10 -C 16 in a mixture of aprotic solvents Inhibitor II [79] Mixture of imidazolines and amidoamines obtained in a reaction of PEPA with oleic acid FLEK-IK 201 A [90] Mixture of imidazolines with C 10 -C 14 hydrocarbon chains dissolved in polar organic solvents FLEK-IK 201 B [90] Mixture of imidazolines with C 10 -C 14 hydrocarbon chains, polar organic solvents, light tall oil, and non-ionisable surface-active substance PKU-6 [61,62] Product of hexamine and alkyl chloride condensation was noted to have small effect on the rate of cathodic reaction. We explain it by the fact that the adsorption of surface-active substances affects the mass transfer stage less than the charge transfer stage if diffusion layer thickness is much greater than that of the adsorption layer.…”

Section: Corrosion Inhibitor Composition Amdor Ik-3n [85]mentioning

confidence: 99%

Application of electrochemical impedance spectroscopy to study hydrogen sulphide corrosion of steel and its inhibition: a review

Kashkovskiy

Стрельникова

Федотова

2019

Corrosion Engineering, Science and Technology

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The review summarises the results of EIS analysis of sulphide films formed on steel during hydrogen sulphide and microbiologically induced corrosion, as well as inhibition of these processes. The issues of the effectiveness of anticorrosive protection of pipeline systems, the possibility of chemical modelling of biocorrosion activity of media, identifying the contribution of corrosion inhibitors to the barrier action of surface films on the corroded steel are considered as well. The information presented in the review will be of interest to employees of the anti-corrosion protection services of oil and gas producing and transporting companies.

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“…Electrochemistry is a powerful tool to study corrosion phenomena and widely applied in academic and industrial research [11][12][13][14]. Therefore, this method was chosen for this study.…”

Section: Corrosion Testingmentioning

confidence: 99%

The influence of alkalising amines on the film formation by oleyldiamine

Hater¹,

Kraft²,

Foret³

2015

Int. J. Corros. Scale Inhib.

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The film formation of film forming amines (FFAs), commonly used as corrosion inhibitors in water/steam cycles, has been subject of various studies. However, less is known of the impact of alkalising amines (AA) on the film formation. AAs have a solubilising effect on the FFA and as a consequence might indirectly influence the properties of the film.Therefore, the film formation of oleyldiamine, a commonly used FFA, on carbon steel has been studied with electrochemical impedance spectroscopy (EIS) in defined test water, containing 200 mg L -1 of NaCl, with and without the presence of different AAs. The studies have been carried out at two different pH values over an exposure time up to 5 h.All EIS spectra of the blank show one semi-circle, whereas two distinct semi-circles have been observed in the spectra of the test solutions with FFA. Therefore, the steel solution interface has been described by two different equivalent circuits using resistances and constant phase elements. All EIS spectra could be fitted with good agreement to the experimental data. The spectra showed significant and systematic changes throughout the exposure time.All polarisation resistances measured with FFA at pH 9.0 are much higher compared to the data obtained at pH 8.2. The polarisation resistance of the blank solution is strongly decreasing over time following roughly an exponential law and almost comes to a steady state after 5 hours. In contrast to this the solutions containing FFA show a linear increase of the polarisation resistance over time. Obviously the film formation has not yet completely been finished within the experimental period.The FFA solutions containing the two different AA show a similar behaviour over time and almost the same high polarisation resistance, reflecting the excellent corrosion protection. Overall, the data indicate that the film obtained with oleylamine in the solutions containing DEAE provides a slightly better protection than FFA solution with CHA. Thus, the more toxic CHA can be replaced by DEAE.

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Peculiarities of protective efficiency of nitrogen containing inhibitors of steel corrosion

Cited by 8 publications

References 5 publications

Study of steel corrosion inhibition in media containing H2S and CO2 by impedance spectroscopy and polarization resistance methods

Study of steel corrosion inhibition in media containing H2S and CO2 by impedance spectroscopy and polarization resistance methods

Application of electrochemical impedance spectroscopy to study hydrogen sulphide corrosion of steel and its inhibition: a review

The influence of alkalising amines on the film formation by oleyldiamine

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