On the corrosion inhibition of low carbon steel in concentrated sulphuric acid solutions. Part I: Chemical and electrochemical (AC and DC) studies

Rehim, Sayed S. Abdel; Hazzazi, Omar A.; Amin, Mohammed A.; Khaled, K.F.

doi:10.1016/j.corsci.2008.06.005

Cited by 156 publications

(54 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…4, the depressed semicircles usually obtained for an electrode/solution interface due to the rough electrode surface. The corrosion of mild steel in acid media increases the roughness of the electrode surface and, therefore, reduces the phase angle [15]. In Fig 4, the phase angle increases with increase in inhibitor concentration up to 313 K and it decreased up to 333 K temperature due to desorption of inhibitor molecule.…”

Section: Electrochemical Impedance Spectroscopic (Eis) Measurementmentioning

confidence: 89%

Inhibition study of mild steel corrosion in 1 M hydrochloric acid solution by 2-chloro 3-formyl quinoline

Prasanna¹,

Praveen²,

Hebbar³

et al. 2015

Int J Ind Chem

View full text Add to dashboard Cite

The corrosion inhibition study of 2-chloro 3-formyl quinoline was conducted for mild steel corrosion in 1 M hydrochloric acid solution at a temperature range of 303-333 K by chemical and electrochemical measurements. Inhibition efficiency increases with the increase of inhibitor concentration but decreases with increasing temperature. The polarization measurement reveals that the inhibitor acts as the mixed type and this inhibition effect is attributed to the adsorption of the inhibitor on the surface of mild steel from the bulk of the solution. The adsorption of 2-chloro 3-formyl quinoline on mild steel surface is exothermic and obeys the Freundlich adsorption isotherm. Thermodynamic parameters and activation parameters were calculated and discussed in depth. Scanning electron microscopy (SEM) micrographs were used to investigate the surface morphology of the steel sample in presence and absence of inhibitor.

show abstract

Section: Electrochemical Impedance Spectroscopic (Eis) Measurementmentioning

confidence: 89%

Inhibition study of mild steel corrosion in 1 M hydrochloric acid solution by 2-chloro 3-formyl quinoline

Prasanna¹,

Praveen²,

Hebbar³

et al. 2015

Int J Ind Chem

View full text Add to dashboard Cite

show abstract

“…This limits the accessibility of the surface to the reacting ion H 3 O + , i.e. the gramine blocks part of the metal surface with respect to the corrosive medium and hence decreases the reaction rate without affecting the reaction mechanism [44,45].…”

Section: Polarisation Curvesmentioning

confidence: 99%

Inhibitive action of gramine towards corrosion of mild steel in deaerated 1.0M hydrochloric acid solutions

et al. 2012

View full text Add to dashboard Cite

a b s t r a c tThe effect of addition of gramine on mild steel dissolution in deaerated 1.0 M hydrochloric acid was studied through potentiodynamic polarisation curves, electrochemical impedance spectroscopy and gravimetric measurements in the temperature range from 25°C to 55°C. Gramine was found to shift the corrosion potentials towards less noble values and decrease both dissolution of mild steel and hydrogen evolution reaction. Gramine did not affect the corrosion reaction mechanism (blocking effect). Results obtained from the several measurement techniques were in good agreement and revealed good inhibition efficiencies in the concentration range (0.75 mM Ä 7.5 mM) particularly at higher concentrations.

show abstract

“…The EDAXs survey spectra were used to determine the elements present on the mild steel surface before and after exposure to the inhibitor solution [28][29][30]. The objective of this section was to confirm the results obtained from chemical and electrochemical measurements that a protective surface film of inhibitor is formed on the mild steel surface.…”

Section: Energy Dispersive Analysis Of X-rays (Edaxs)mentioning

confidence: 93%

“…(8c) indicates that in the presence of inhibitor (60 ppm Cl -+ 50 ppm Cu-HTF) the rate of corrosion is suppressed, as can be seen from the decrease of corroded areas. The mild steel surface is almost free from corrosion due to the formation of insoluble complex on the surface of the mild steel [30].…”

Section: Sem Analysis Of Mild Steel Surfacementioning

confidence: 99%

“…To understand the nature of the surface film in the absence and presence of inhibitors and the extent of corrosion of mild steel, the SEM micrographs of the surface are examined [28][29][30]. The SEM images of different magnification (×20) of mild steel specimen immersed in an aqueous containing 60 ppm Cl -for one day in the absence and presence of inhibitor system are shown in Fig.…”

Section: Sem Analysis Of Mild Steel Surfacementioning

confidence: 99%

See 1 more Smart Citation

Inhibition Effect of Copper Complex of 1-(8-Hydroxy Quinolin-2-yl- Methyl) Thiourea on the Corrosion of Mild Steel in Sodium Chloride Solution

Syed¹,

Abdul²,

Rajendran³

2014

TOMSJ

View full text Add to dashboard Cite

Abstract:The Corrosion inhibition of an inhibitor namely Copper complex of 1-(8-hydroxy quinolin-2-yl-methyl) thiourea (Cu-HTF) which controls the corrosion of mild steel immersed in an aqueous solution containing 60 ppm Cl -has been investigated through electrochemical and mass loss method. The formulation consisting of 60 ppm of Cl -and 50 ppm of Cu-HTF offers good inhibition efficiency of 78 %. Polarization study shows that this formulation acts as a cathodic inhibitor.AC impedance spectra indicate that a protective film is formed on the mild steel surface. Fluorescence spectral analysis was used to detect the presence of iron-inhibitor complex. The surface morphology has been analyzed by FTIR, UV-Visible spectroscopy, Scanning Electron Microscope (SEM) and EDAX. Cu-HTF has the ability to prevent the growth of certain microorganisms such as E. coli, Streptococcus, Pseudomonas and Enterobacter.

show abstract

On the corrosion inhibition of low carbon steel in concentrated sulphuric acid solutions. Part I: Chemical and electrochemical (AC and DC) studies

Cited by 156 publications

References 42 publications

Inhibition study of mild steel corrosion in 1 M hydrochloric acid solution by 2-chloro 3-formyl quinoline

Inhibition study of mild steel corrosion in 1 M hydrochloric acid solution by 2-chloro 3-formyl quinoline

Inhibitive action of gramine towards corrosion of mild steel in deaerated 1.0M hydrochloric acid solutions

Inhibition Effect of Copper Complex of 1-(8-Hydroxy Quinolin-2-yl- Methyl) Thiourea on the Corrosion of Mild Steel in Sodium Chloride Solution

Contact Info

Product

Resources

About