Electrochemical and surface analysis studies on corrosion inhibition of Q235 steel by imidazoline derivative against CO2 corrosion

Wang, Bei; Du, Min; Zhang, J.; Gao, Congjie

doi:10.1016/j.corsci.2010.09.042

Cited by 193 publications

(68 citation statements)

References 36 publications

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“…AFM is a powerful technique to investigate the surface morphology at nano-to microscale and has become a new choice to study the influence of inhibitor on the generation and the progress of the corrosion at the metal/solution interface [36][37][38]. The three-dimensional (3D) AFM morphologies and the AFM cross-sectional profile for polished carbon steel surface (reference sample), carbon steel surface immersed in sea water (blank sample), and carbon steel surface immersed in sea water containing the formulation of 8 mL of HE and 25 ppm of Zn 2+ are shown in Figure 7 images (a, d, g), (b, e, h), (c, f, i), respectively.…”

Section: Atomic Force Microscopymentioning

confidence: 99%

Inhibitory Mechanism of Carbon Steel Corrosion in Sea Water by an Aqueous Extract of Henna Leaves

Johnsirani¹,

Sathiyabama²,

Rajendran

et al. 2012

ISRN Corrosion

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The inhibition efficiency (IE) of an aqueous extract of henna leaves in controlling corrosion of carbon steel in seawater has been evaluated by weight-loss method. The weight loss study reveals that the formulation consisting of 8 mL of henna extract (HE) and 25 ppm of Zn 2+ has 94% inhibition efficiency in controlling corrosion of carbon steel in sea water. Polarization study reveals that HE and Zn 2+ system functions as mixed type inhibitor. AC impedance spectra reveal that protective film is formed on the metal surface. The nature of the metal surface has been analysed by FTIR spectra, SEM, and AFM analysis.

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Section: Atomic Force Microscopymentioning

confidence: 99%

Inhibitory Mechanism of Carbon Steel Corrosion in Sea Water by an Aqueous Extract of Henna Leaves

Johnsirani¹,

Sathiyabama²,

Rajendran

et al. 2012

ISRN Corrosion

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“…The corrosion rate (m) and inhibition efficiency (g) are calculated by the following equations [13]:…”

Section: Weight-loss Testmentioning

confidence: 99%

The synergistic inhibition effect between imidazoline-based dissymmetric bis-quaternary ammonium salts and thiourea on Q235 steel in CO2 corrosion process

Ren

Zhang

et al. 2015

Res Chem Intermed

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The inhibition effect of imidazoline-based dissymmetric bis-quaternary ammonium salt (DBA) and Thiourea (TU) on Q235 steel in CO 2 -saturated simulated oilfield-produced water was studied by means of the weight-loss method, polarization and electrochemical impedance spectroscopy (EIS). The polarization measurements reveal that the compound inhibitors are anodic-type inhibitors that mainly inhibit the anodic process. EIS results show that the changes in the impedance parameters are due to the formation of a protective layer on the Q235 steel surface by the adsorption of inhibitor molecules. The results of energy dispersive X-ray spectroscopy and scanning electron microscopy confirm the existence of the protective layer. The results also show that adsorption model obeys to the FloryHuggins adsorption isotherm. The synergism parameter suggests that the synergistic effect is obvious at concentrations of 100 and 200 mg L -1 , and there is a cooperative mechanism between the DBA and TU.

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“…Also, it is accepted that the first step during the adsorption of an organic drug on a metal surface usually involves replacement of one or more water molecules absorbed at the metal surface (41,42). The adsorption is influenced by the nature and charge of the metal, chemical structure of inhibitor and type of aggressive electrolyte.…”

Section: Mechanism Of Inhibitionmentioning

confidence: 99%

Studies on the inhibition of carbon steel corrosion in hydrochloric acid solution by expired Carvedilol drug

Fouda

Morsi

Mogy

2017

Green Chemistry Letters and Reviews

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An expired pharmaceutical product, Carvedilol, was studied as save drug to prevent carbon steel (CS) corrosion in acidic environments by using weight loss, potentiodynamic polarization, electrochemical impedance spectroscopy (EIS) and electrochemical frequency modulation (EFM) techniques. The inhibition efficiency increased with increasing drug dose and decreased with increasing temperature, reaching a maximum value of 98.94% at 25°C and 1.6 × 10 −4 M. Polarization data showed that the drug is of a mixed type. The inhibition of CS corrosion by Carvedilol can be attributed to the adsorption ability of drug molecules onto the reactive sites of the metal surface. The adsorption process follows the Langmuir isotherm via physical adsorption. The surface morphologies of CS were examined by atomic force spectroscopy (AFM). The results obtained from different techniques are in good agreement.

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Electrochemical and surface analysis studies on corrosion inhibition of Q235 steel by imidazoline derivative against CO2 corrosion

Cited by 193 publications

References 36 publications

Inhibitory Mechanism of Carbon Steel Corrosion in Sea Water by an Aqueous Extract of Henna Leaves

Inhibitory Mechanism of Carbon Steel Corrosion in Sea Water by an Aqueous Extract of Henna Leaves

The synergistic inhibition effect between imidazoline-based dissymmetric bis-quaternary ammonium salts and thiourea on Q235 steel in CO2 corrosion process

Studies on the inhibition of carbon steel corrosion in hydrochloric acid solution by expired Carvedilol drug

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