Aminotriazole as corrosion inhibitor of Cu30Ni alloy in 3% NACl in presence of ammoniac

Es-Salah, Karima; Keddam, M.; Rahmouni, K.; Srhiri, A.; Takenouti, H.

doi:10.1016/j.electacta.2004.01.038

Cited by 53 publications

(21 citation statements)

References 19 publications

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“…This confirms the appearance of a broad tafelien field in the cathodic domain, when the tested inhibitors were added, on the one hand, and makes it possible to allot the first loop has a charge transfer process. As expected from the effect of rotation speed [13,14,29], the diffusion does not modify the electrode kinetics at low cathodic or at the corrosion potentials. Figure 7 shows the impedance diagrams obtained without and with 10 -3 M of BiTA, ATA and MBI at the cor- rosion potential after the Cu-30Ni was exposed to the solution for different times.…”

Section: Effect Of the Tested Inhibitorssupporting

confidence: 56%

“…A small current peak, at −0.36 V versus Ag/AgCl, can be noticed when immersed in the reference solution. This peak may correspond to the reduction of corrosion products formed at the open-circuit conditions before potential sweep [13,29]. In presence of the tested inhibitors we note a decrease of the current density values in the vicinity of the corrosion potential and more particularly in presence of MBI.…”

Section: Cathodic Curvesmentioning

confidence: 72%

“…In the context of a study published elsewhere [13], we limit ourselves here to have the comparative results at 1mM of each inhibitor.…”

Section: Resultsmentioning

confidence: 99%

“…In presence of the tested inhibitors we note a decrease of the current density values in the vicinity of the corrosion potential and more particularly in presence of MBI. In the context of a detailed study published elsewhere [13,14], an increase of the inhibitors concentration leads to a decrease of corrosion rate, this decrease is accompanied by the disappearance of the peak raised in the absence of inhibitors. We also note a large domain of linearity indicating a modification of the cathodic process kinetic control.…”

Section: Cathodic Curvesmentioning

confidence: 95%

“…These experiments were performed in the absence of pollutants on copper electrode. Es-Salah et al examined the inhibiting effect of ATA and Bitriazole (BiTA) on the corrosion of Cu-30Ni alloy in 3% NaCl in presence of ammoniac, and they found that when the ATA and BiTA were added in the solution, a remarkable inhibiting effect was observed when its concentration is higher than 1 mM [13,14]. 2-Mercaptobenzimidazole (MBI), as an inhibitor, has been studied on the inhibition of mild steel in sulphuric acid solution [15], steel in hydrochloric acid [16,17], copper and its alloys in hydrochloric acid [18], mild steel in phosphoric acid [19].…”

Section: Introductionmentioning

confidence: 99%

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Contribution to a Comparative Study of the Corrosion Inhibiting Effect of Some Azoles, to Protect the Cu70-30Ni Alloy in Aerated NaCl 3% in Presence of Ammonia

Benmessaoud¹,

Es-Salah²,

Kabouri³

et al. 2011

MSA

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Some azoles were tested such as 3-amino-1,2,4-triazole (ATA), 3-4'-bitriazole -1,2,4 (BiTA)and 2-Mercaptobenzimidazole (MBI) against Cu-30Ni alloy corrosion in 3%NaCl polluted by ammonia using potentiodynamic measurements and electrochemical impedance spectroscopy and non-electrochemical techniques (scanning Electron Microscopy (SEM)) studied surface morphology has been used to characterize electrode surface. This study permitted to follow the evolution of the inhibitory effect of some azoles, on Cu-30Ni alloy corrosion in 3% NaCl polluted by ammonia and indicate that the tested inhibitors act as a good mixed-type inhibitor retarding the anodic and cathodic reactions. An increase of the inhibitors concentration leads to a decrease of corrosion rate and inhibition efficiency increase.

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Section: Effect Of the Tested Inhibitorssupporting

confidence: 56%

Section: Cathodic Curvesmentioning

confidence: 72%

“…In the context of a study published elsewhere [13], we limit ourselves here to have the comparative results at 1mM of each inhibitor.…”

Section: Resultsmentioning

confidence: 99%

Section: Cathodic Curvesmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Contribution to a Comparative Study of the Corrosion Inhibiting Effect of Some Azoles, to Protect the Cu70-30Ni Alloy in Aerated NaCl 3% in Presence of Ammonia

Benmessaoud¹,

Es-Salah²,

Kabouri³

et al. 2011

MSA

Self Cite

View full text Add to dashboard Cite

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Effectiveness of 2‐mercaptobenzothiazole, 8‐hydroxyquinoline and benzotriazole as corrosion inhibitors on AA 2024‐T3 assessed by electrochemical methods

Balaskas

Curioni

Thompson

2015

Surface & Interface Analysis

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In this study, the effectiveness of 2-mercaptobenzothiazole (2-MBT), 8-hydroxyquinoline and benzotriazole as corrosion inhibitors for AA 2024-T3 aluminium alloy was evaluated. The corrosion behaviour in the presence of each compound was investigated by image-assisted electrochemical noise analysis, electrochemical impedance spectroscopy, potentiodynamic polarization and the split cell technique. It was found that 2-MBT has superior inhibition properties compared with the other inhibitors. In particular, the specimens immersed in 3.5% NaCl in the presence of 2-MBT displayed high values of noise resistance that were maintained for over 400 h of testing, and high values of low-frequency impedance, measured after immersion for 24 h. The split cell technique and potentiodynamic polarization tests indicated that only 2-MBT decreases significantly both the anodic and the cathodic reaction rates. Scanning electron microscopy observations and energy dispersive X-ray measurements complement the findings from electrochemical measurements indicating that only 2-MBT protects the second phase particles, preventing dealloying, trenching and initiation of corrosion.

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Electrochemical corrosion behavior of Al7075 rotating disc electrode in neutral solution containing l-glutamine as a green inhibitor

Ashassi-Sorkhabi

Asghari

2009

J Appl Electrochem

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This is a study of the electrochemical corrosion behavior of aluminum alloy Al7075 and its corrosion inhibition using L-glutamine in 3.5% NaCl solution under different hydrodynamic conditions. The hydrodynamic conditions were simulated by using a rotating disc electrode. The results showed that an increase in rotation speed leads to a higher corrosion current density, while the charge transfer resistance decreases and corrosion potential shifts toward more positive values. The inhibition efficiency depends on rotation speed. That is, the efficiency was low in stagnant solution, but enhanced significantly under hydrodynamic conditions. The phenomenon was attributed to the increased mass transport of inhibitor's molecules to the electrode surface that is advantageous for improvement of inhibition efficiency. However, higher rotation speeds (X C 1,500 rpm) cause a slight reduction of efficiency due to higher shear stresses.

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Aminotriazole as corrosion inhibitor of Cu30Ni alloy in 3% NACl in presence of ammoniac

Cited by 53 publications

References 19 publications

Contribution to a Comparative Study of the Corrosion Inhibiting Effect of Some Azoles, to Protect the Cu70-30Ni Alloy in Aerated NaCl 3% in Presence of Ammonia

Contribution to a Comparative Study of the Corrosion Inhibiting Effect of Some Azoles, to Protect the Cu70-30Ni Alloy in Aerated NaCl 3% in Presence of Ammonia

Effectiveness of 2‐mercaptobenzothiazole, 8‐hydroxyquinoline and benzotriazole as corrosion inhibitors on AA 2024‐T3 assessed by electrochemical methods

Electrochemical corrosion behavior of Al7075 rotating disc electrode in neutral solution containing l-glutamine as a green inhibitor

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