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2018•Unpublished venueOpen access

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

Lihua Liang

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Abstract

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.

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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.

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Available abstract

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.

Key concepts: Polyaspartic acid, Copper, Corrosion, Seawater, Adsorption, Corrosion inhibitor, Chemistry, Metallurgy

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