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Web of Proceedings - Francis Academic Press
Web of Proceedings - Francis Academic Press

Study on Corrosion Inhibition and Adsorption of Polyaspartic Acid Corrosion Inhibitor to Seawater Copper

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DOI: 10.25236/bemes.2018.031


Lihua Liang, Changjiang Zuo, Xin Shi

Corresponding Author

Lihua Liang


The inhibitory performance and adsorption behavior of green inhibitor polyaspartic acid (PASP) on copper in 3% NaCl solution was studied by electrochemical impedance and polarization curve method. The results showed that when PASP was used at an optimal concentration of 15 mg/L, the corrosion inhibition rate could reach 77.2%. The adsorption of PASP significantly reduced the erosion of Cl-, which belongs to the anode type corrosion inhibitor. The adsorption behavior of PASP obeys the Langmuir adsorption isotherm. The formula is a spontaneous and exothermic process that belongs to chemical adsorption.


Copper, Sea Water, Pasp, Adsorption and Corrosion