Study on the Combined Anticorrosion Method of Thermal Spraying and Coating of Carbon Steel in Deposit Water of Storage Tank

Abstract:

Storage tank was protected from corrosion with the combined method of thermal spraying and coating, and corrosion resistance of the coating was studied through on-the-spot static weight loss method, potentiodynamic polarization curve and electrochemical AC impedance test. The result showed that the hanging slices with thermal sprayed aluminum powder, glass flake and epoxy resin coating had least weight loss and best corrosion resistance after 10 months of corrosion with on-the-spot weight loss experiment. In the polarization curve experiment, the anodic polarization curve of the hanging slices with thermal sprayed aluminum powder and glass flake had passivation characteristics, strong polarization area shifted left, weak corrosion current and greater polarization resistance. In the AC impedance spectra, hanging slices with thermal sprayed aluminum powder and glass flake had greater capacitive reactance arc and better corrosion resistance.

• Periodical: Advanced Materials Research (Volumes 139-141)
• Pages: 443-446
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.139-141.443
• Online since: October 2010
• Authors: Yong Zhang Zhou, Chun Yan Yang, Jian Min Zeng, Xin Ni, Dong Sheng Chen, Wu Ji Wei, Bo Qin Gu
• Keywords: Deposit Water, Electrochemical AC Impedance, Glass Flake, Polarization Curve, Thermal Sprayed Aluminum Powder

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