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Inhibition effect and mechanism of polyacrylamide for steel corrosion in simulated concrete pore solution
Highlights The effect of polyacrylamide on the corrosion inhibition performance of steel was studied. Polyacrylamide improves the corrosion inhibition performance of steel. PAM participates in the formation of adsorption film on the steel surface.
Abstract The research examined the effect of polyacrylamide (PAM) on corrosion inhibition performance for steel in the simulated concrete pore solution. Linear polarization resistance, electrochemical impedance spectroscopy, potentiodynamic polarization, X-ray Photoelectron Spectroscopy and molecular dynamics simulations are performed to investigate the inhibitive effect and mechanism of PAM for steel corrosion. Results reveal that PAM improves the inhibition performance of steel corrosion and the inhibition efficiency increases with PAM content increasing. The maximum inhibition efficiency (about 99%) is achieved when the concentration of PAM is 0.15%. The improvement of corrosion inhibitive performance by PAM is due to the generation of adsorption film on steel, and the adsorption of PAM is following the Langmuir adsorption isotherm. In addition, the inhibition mechanism by PAM on steel corrosion is determined using molecular dynamics simulations.
Inhibition effect and mechanism of polyacrylamide for steel corrosion in simulated concrete pore solution
Highlights The effect of polyacrylamide on the corrosion inhibition performance of steel was studied. Polyacrylamide improves the corrosion inhibition performance of steel. PAM participates in the formation of adsorption film on the steel surface.
Abstract The research examined the effect of polyacrylamide (PAM) on corrosion inhibition performance for steel in the simulated concrete pore solution. Linear polarization resistance, electrochemical impedance spectroscopy, potentiodynamic polarization, X-ray Photoelectron Spectroscopy and molecular dynamics simulations are performed to investigate the inhibitive effect and mechanism of PAM for steel corrosion. Results reveal that PAM improves the inhibition performance of steel corrosion and the inhibition efficiency increases with PAM content increasing. The maximum inhibition efficiency (about 99%) is achieved when the concentration of PAM is 0.15%. The improvement of corrosion inhibitive performance by PAM is due to the generation of adsorption film on steel, and the adsorption of PAM is following the Langmuir adsorption isotherm. In addition, the inhibition mechanism by PAM on steel corrosion is determined using molecular dynamics simulations.
Inhibition effect and mechanism of polyacrylamide for steel corrosion in simulated concrete pore solution
Zhi, Fangfang (author) / Jiang, Linhua (author) / Jin, Ming (author) / Xu, Peng (author) / Xiao, Beibei (author) / Jiang, Quanguo (author) / Chen, Lei (author) / Gu, Yue (author)
2020-07-29
Article (Journal)
Electronic Resource
English
| British Library Online Contents | 2018
| British Library Online Contents | 2015
| British Library Online Contents | 2018
| British Library Online Contents | 2015