Impedance study on calcium nitrite as a penetrating corrosion inhibitor for steel in concrete

Królikowski, A.; Kuziak, J.

doi:10.1016/j.electacta.2011.01.069

Cited by 117 publications

(49 citation statements)

References 53 publications

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“…7 (c)) that simulates an electrode with a protective film having defects. 39 In Fig. 7 (c), R sol is resistance of bulk solution, R d is resistance of the defects in the protective film, R ct is charge transfer resistance of the metal/solution interface inside the defects, Q dl is the constant phase element of the double layer at the interface, and Q f is the constant phase element of the protective film.…”

Section: Eis Testsmentioning

confidence: 99%

Inhibition Ability of Gluconates for Fresh Water Corrosion of Mild Steel Enhanced by Metal Cations

Otani

Islam

Sakairi

2017

J. Electrochem. Soc.

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Inhibition ability of gluconates for fresh water corrosion of mild steel changed with metal cations were investigated by immersion tests and electrochemical impedance spectroscopy (EIS) tests. The results of the tests showed that the inhibition ability of gluconates was enhanced by metal cations that have large "corrosion inhibitory effect of cation, Y", in model fresh water. Surface analysis showed that gluconate ligands and metal cations that have large Y can bond on mild steel and that they form a protective film on the steel. EIS analysis with an equivalent circuit suggested that metal cations that have large Y would reduce the area of defects in the protective film of gluconates.

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Section: Eis Testsmentioning

confidence: 99%

Inhibition Ability of Gluconates for Fresh Water Corrosion of Mild Steel Enhanced by Metal Cations

Otani

Islam

Sakairi

2017

J. Electrochem. Soc.

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“…For the samples depassivated by the presence of chloride, a second time constant was observed at low frequency. Therefore, fitting these data requires an equivalent electrical circuit with two time constants (Figure b), which includes charge transfer resistance ( R ct ) and double layer capacitance ( Q dl ) in addition to R f and Q f . Tables and give the fitting parameters of the pre‐passive HRB 400 steel rebars in different electrolytes and the results will be analyzed in detail in the discussion section.…”

Section: Resultsmentioning

confidence: 99%

The roles carbonate and bicarbonate ions play on pre‐passive HRB400 rebars in simulated pore solutions of deteriorating concrete

Shang

Meng

et al. 2018

Materials & Corrosion

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To evaluate the corrosion behavior of HRB400 rebars during the aging process of concrete, corresponding simulated concrete pore solutions were proposed. Using electrochemical measurements and XPS analysis, the depassivation conditions, properties of the pre‐passive films, and rebars corrosion rate were discussed. The effects of carbonate and bicarbonate ions, pH and chloride on the corrosion behavior of pre‐passive HRB400 rebars were investigated. Results show that the influence of carbonate and bicarbonate ions on the pre‐passive HRB400 rebars is reversed before and after its depassivation: before depassivation, carbonate and bicarbonate ions are detrimental to the stability of passive film, but beneficial after depassivation.

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“…In cracked concrete, Montes et al [13] and Kondratova et al [14] found that nitrite alone, in general, had no effect in decreasing corrosion, and the crack condition of the specimens strongly affected the corrosion process. In simulated concrete pore solution, nitrite was found to be effective in inhibiting pit initiation [15] and pit propagation [16]. Chloride threshold level was not only increased with the increasing of nitrite concentration but also affected by pH [17].…”

Section: Introductionmentioning

confidence: 98%

Effect of Nitrite Inhibitor on the Macrocell Corrosion Behavior of Reinforcing Steel

Cao

Hibino

Goda

2015

Journal of Chemistry

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The effect of nitrite ions on the macrocell corrosion behavior of reinforcing steel embedded in cement mortar was investigated by comparing and analyzing the macrocell corrosion current, macrocell polarization ratios, and slopes of anodic and cathodic steels. Based on the experimental results, the relationship between macrocell potential difference and macrocell current density was analyzed, and the mechanism of macrocell corrosion affected by nitrite ions was proposed. The results indicated that nitrite ions had significant impact on the macrocell polarization ratios of cathode and anode. The presence of nitrite could reduce the macrocell current by decreasing the macrocell potential difference and increasing the macrocell polarization resistance of the anode.

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Impedance study on calcium nitrite as a penetrating corrosion inhibitor for steel in concrete

Cited by 117 publications

References 53 publications

Inhibition Ability of Gluconates for Fresh Water Corrosion of Mild Steel Enhanced by Metal Cations

Inhibition Ability of Gluconates for Fresh Water Corrosion of Mild Steel Enhanced by Metal Cations

The roles carbonate and bicarbonate ions play on pre‐passive HRB400 rebars in simulated pore solutions of deteriorating concrete

Effect of Nitrite Inhibitor on the Macrocell Corrosion Behavior of Reinforcing Steel

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