Electrochemical investigations on the performance of newly synthesized azomethine polyester on rebar corrosion

Bhuvaneshwari, B.; Arokiyaraj, Selvaraj; Iyer, Nagesh R.; Ravikumar, L.

doi:10.1002/maco.201307472

Cited by 24 publications

(21 citation statements)

References 35 publications

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“…These results can be interpreted by the surface adsorption of the inhibitor molecules which provides a protective layer of the inhibitor molecules between the mild steel and the corrosive solution. The role of corrosion inhibitors in reducing the surface roughness of the metallic coupons has also been reported in other documents …”

Section: Resultssupporting

confidence: 55%

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Chitosan as a green inhibitor for mild steel corrosion: Thermodynamic and electrochemical evaluations

Rabizadeh

Asl

2018

Materials & Corrosion

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In this research, the effects of chitosan on the corrosion behavior of mild steel in 0.1 M hydrochloric acid was investigated by different approaches. According to weight loss measurements, increasing the concentration of chitosan from 0.3 to 1.8 mM, significantly reduced the corrosion rate of mild steel, for example, from 95.5 ± 5 to 7.5 ± 5 mpy at 298 K. The thermodynamic calculations indicate an increase in the corrosion activation energy and the enthalpy of activation when 1.8 mM chitosan was added to the aggressive solution. The electrochemical polarization technique revealed a decrease in corrosion current density which is compatible with the observed increase in the charge transfer resistance measured by electrochemical impedance spectroscopy. The EDS spectra confirmed the adsorption of chitosan on mild steel. Analyzing the surface topography of the coupons by atomic force microscopy showed a remarkable decrease in the corrosion rate of the specimens in the presence of chitosan.

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Section: Resultssupporting

confidence: 55%

“…The role of corrosion inhibitors in reducing the surface roughness of the metallic coupons has also been reported in other documents. [52]…”

Section: Afmmentioning

confidence: 99%

Chitosan as a green inhibitor for mild steel corrosion: Thermodynamic and electrochemical evaluations

Rabizadeh

Asl

2018

Materials & Corrosion

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“…Commonly used detection methods include physical and electrochemical methods, but they all have some flaws. Physical methods, such as the resistance method, are applicable only in the detection of severe corrosion of steel bars and cause damage to the structure, while the measurement accuracy is low; the electrochemical method 7 is a commonly used detection method, which provides quantitative information on the corrosion rate. Therefore, piezoelectric sensors are applied to detect corrosion of steel bars in this study, which can achieve real-time and long-term on-line monitoring of corrosion, determine the location of the damage and the specific stage of corrosion, and provide an effective basis for building safety.…”

Section: Corrosion Detectionmentioning

confidence: 99%

Corrosion Detection of Reinforcement of Building Materials with Piezoelectric Sensors

Jia¹

2017

Kem. Ind.

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The extensive use of reinforced materials in the construction industry has raised increased concerns about their safety and durability, while corrosion detection of steel materials is becoming increasingly important. For the scientific management, timely repair and health monitoring of construction materials, as well as to ensure construction safety and prevent accidents, this paper investigates corrosion detection on construction materials based on piezoelectric sensors. At present, the commonly used corrosion detection methods include physical and electrochemical methods, but there are shortcomings such as large equipment area, low detection frequency, and complex operation. In this study an improved piezoelectric ultrasonic sensor was designed, which could not only detect the internal defects of buildings while not causing structural damage, but also realize continuous detection and enable qualitative and quantitative assessment. Corrosion detection of reinforced building materials with piezoelectric sensors is quick and accurate, which can find hidden dangers and provide a reliable basis for the safety of the buildings.

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“…[3,4] Numerous strategies are available for increasing the service life of reinforced structures exposed to chloride salts. [5][6][7][8][9][10] However, all these methods have their own defects. Therefore, improving the corrosion resistance of steel bar is the best way to increase durability of concrete.…”

Section: Introductionmentioning

confidence: 99%

Corrosion resistances of passive films on low‐Cr steel and carbon steel in simulated concrete pore solution

Liu

Cheng

Zhao

et al. 2016

Surface & Interface Analysis

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aThe passive ranges of carbon steel rebar and 3Cr steel rebar in saturated Ca(OH) 2 -simulated concrete pore solution with pH 12.6 were determined by means of cyclic voltammetry and potentiodynamic polarization curves. Chronopotentiometry was used to obtain steady-state conditions for the formation of passive films on rebar samples at different anodic potentials. Electrochemical impedance spectroscopy, Mott-Schottky and X-ray photoelectron spectrometer curves were employed to compare the formed passive films at different potentials. Additionally, cyclic polarization curves were used to compare the corrosion resistances of formed passive films on the two rebars in saturated Ca(OH) 2 -simulated concrete pore solution with different concentration of Cl À . The results show that the passive ranges of the two rebars are all between À0.15 and +0.6 V, and more stable passive films can be formed on both rebars at the anodic potential of +0.3 V. In the absence of Cl À , the stability and corrosion resistance of the passive film formed on the 3Cr rebar are better than those of CS rebar. The passive film of 3Cr steel has the relatively better pitting corrosion resistance than carbon steel in saturated Ca(OH) 2 -simulated concrete pore solution that contains different concentration of Cl À .

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Electrochemical investigations on the performance of newly synthesized azomethine polyester on rebar corrosion

Cited by 24 publications

References 35 publications

Chitosan as a green inhibitor for mild steel corrosion: Thermodynamic and electrochemical evaluations

Chitosan as a green inhibitor for mild steel corrosion: Thermodynamic and electrochemical evaluations

Corrosion Detection of Reinforcement of Building Materials with Piezoelectric Sensors

Corrosion resistances of passive films on low‐Cr steel and carbon steel in simulated concrete pore solution

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