Effect of carbon steel microstructure and molecular structure of two new Schiff base compounds on inhibition performance in 1M HCl solution by DC, SEM and XRD studies

Naderi, Esmaeel; Ehteshamzadeh, Maryam; Jafari, Amir; Hosseini, Mir Ghasem

doi:10.1016/j.matchemphys.2009.10.036

Cited by 24 publications

(6 citation statements)

References 20 publications

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“…35 35 Figure 4 shows Nyquist plots (a) and Bode and phase angle plots (b) of 8-Bpy, which are perfectly fitted by the equivalent circuit used (those of 10-Bpy and 12-Bpy, see Figures S6 and S7). The impedance of CPE in the equivalent circuits is given by 36 where Y 0 is the CPE constant, j is the imaginary unit, ω is the angular frequency, and n is the CPE exponent. Y 0 is converted into C dl by the following expression 37 where ω max = 2π f max represents the angular frequency at the maximum value of the imaginary part.…”

Section: Results and Discussionmentioning

confidence: 99%

Cationic Gemini Surfactants with a Bipyridyl Spacer as Corrosion Inhibitors for Carbon Steel

Feng

Yin²,

Zhang³

et al. 2018

ACS Omega

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In this work, cationic Gemini surfactants with different alkyl chain lengths ( n = 8, 10, and 12) and a bipyridyl spacer were synthesized and tested as corrosion inhibitors for carbon steel in 1 M HCl solution. The corrosion inhibition efficiency was determined by weight loss measurement, potentiodynamic polarization, and electrochemical impedance spectroscopy. Results showed that such three inhibitors could effectively inhibit the corrosion of carbon steel in 1 M HCl solution, especially at their low concentrations, while the carbon chain length of Geminis used played a negligible role in the inhibition efficiency. Scanning electron microscopy/energy dispersive X-ray analysis observations demonstrated the formation of a protective inhibitor layer on the carbon steel surface. Additionally, the adsorption of the inhibitor molecules on the carbon steel surface was found to obey the Langmuir isotherm.

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Section: Results and Discussionmentioning

confidence: 99%

Cationic Gemini Surfactants with a Bipyridyl Spacer as Corrosion Inhibitors for Carbon Steel

Feng

Yin²,

Zhang³

et al. 2018

ACS Omega

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show abstract

“…The obtained Nyquist plots are in a semicircle shape, which is due to the frequency dispersion of interfacial impedance, the surface roughness, the chemical heterogeneity of surface, and the adsorption-desorption process of inhibitive molecules on steel surface. [51][52][53] The Bode ( Fig. 3c and d) phase angle plots show a single peak at intermediate frequencies indicating the presence of one time constant.…”

Section: Resultsmentioning

confidence: 95%

Experimental and theoretical investigations of benzoic acid derivatives as corrosion inhibitors for AISI 316 stainless steel in hydrochloric acid medium: DFT and Monte Carlo simulations on the Fe (110) surface

et al. 2020

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“…Nyquist plots for the BM and simulated welding HAZ immersed in 50 wt % H2SO4 solutions for different time are shown in Figure 7. It was shown that the plot was one single semi-circular without obvious Warburg-type diffusion, which suggested that the corrosion of all specimens in 50 wt % H2SO4 solutions was mostly dependent upon charge transfer processes [36]. The radius of the Nyquist plot curves increased along the immersion time, which indicated the corrosion resistance increased.…”

Section: Electrochemical Characteristics In H 2 So 4 Solutionmentioning

confidence: 90%

Microstructure and Corrosion Behavior of Simulated Welding HAZ of Q315NS Steel in Sulfuric Acid Solution

Zhang

Zhao

Shu

et al. 2017

Metals

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Abstract:The microstructure evolution and the corrosion behavior of welding heat affected zone (HAZ) of Q315NS steel in 50 wt % H 2 SO 4 at 20 • C was investigated with thermal simulation technique, surface analysis and electrochemical tests. The microstructure of ferrite and pearlite was observed in base metal (BM), fine grained region (FGHAZ) and inter critical region (ICHAZ) while coarse grained region (CGHAZ) consisted of granular bainite. The CGHAZ exhibited the highest microhardness and the largest average grain size. The passivation process occurred on the surface of all specimens. Different microstructure give birth to different corrosion behaviors between CGHAZ and BM, FGHAZ, ICHAZ. The dense oxide film were formed on the surface of ferrite while oxide film with micro voids were formed on the surface of pearlite in BM, FGHAZ and ICHAZ after immersion in 50 wt % H 2 SO 4 solution for 12 h. The rod-shaped corrosion product was formed on the surface of CGHAZ while the porous-structured corrosion product was formed on the surface of BM, FGHAZ and ICHAZ after immersion in 50 wt % H 2 SO 4 solution for 72 h. The corrosion resistance of BM, CGHAZ, FGHAZ and ICHAZ increased during the first 12 h and then declined slowly with increasing immersion time. The BM had the best corrosion resistance while the CGHAZ had the lowest corrosion resistance throughout the corrosion process.

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Effect of carbon steel microstructure and molecular structure of two new Schiff base compounds on inhibition performance in 1M HCl solution by DC, SEM and XRD studies

Cited by 24 publications

References 20 publications

Cationic Gemini Surfactants with a Bipyridyl Spacer as Corrosion Inhibitors for Carbon Steel

Cationic Gemini Surfactants with a Bipyridyl Spacer as Corrosion Inhibitors for Carbon Steel

Experimental and theoretical investigations of benzoic acid derivatives as corrosion inhibitors for AISI 316 stainless steel in hydrochloric acid medium: DFT and Monte Carlo simulations on the Fe (110) surface

Microstructure and Corrosion Behavior of Simulated Welding HAZ of Q315NS Steel in Sulfuric Acid Solution

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