Comparison of the corrosion and passivity behavior between CrMnFeCoNi and CrFeCoNi coatings prepared by argon arc cladding

Caimei Wang; Jianxing Yu; Yang Yu; Yan Zhao; Yu Zhang; Xiangxi Han

Journal of Materials Research and Technology (Jul 2020)

Comparison of the corrosion and passivity behavior between CrMnFeCoNi and CrFeCoNi coatings prepared by argon arc cladding

Caimei Wang,
Jianxing Yu,
Yang Yu,
Yan Zhao,
Yu Zhang,
Xiangxi Han

Affiliations

Caimei Wang: State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300350, China; Tianjin Key Laboratory of Port and Ocean Engineering, Tianjin University, Tianjin 300350, China
Jianxing Yu: State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300350, China; Tianjin Key Laboratory of Port and Ocean Engineering, Tianjin University, Tianjin 300350, China; College of Mechanical and Marine Engineering, Beibu Gulf University, Qinzhou Guangxi 535011, China
Yang Yu: State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300350, China; Tianjin Key Laboratory of Port and Ocean Engineering, Tianjin University, Tianjin 300350, China; Corresponding author.
Yan Zhao: State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300350, China; Tianjin Key Laboratory of Port and Ocean Engineering, Tianjin University, Tianjin 300350, China
Yu Zhang: Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China
Xiangxi Han: College of Mechanical and Marine Engineering, Beibu Gulf University, Qinzhou Guangxi 535011, China

Journal volume & issue: Vol. 9, no. 4
pp. 8482 – 8496

Abstract

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The corrosion behavior and passive film properties of CrMnFeCoNi and CrFeCoNi coatings in 0.5 mol/L H2SO4 solution were investigated by potentiodynamic and potentiostatic measurements, electrochemical impedance spectroscopy and Mott-Schottky tests. The chemical compositions of passive film were characterized by X-ray photoelectron spectroscopy (XPS). Results indicated that CrFeCoNi coating possessed lower passive current density, higher polarization resistance, lower donor and acceptor density compared with CrMnFeCoNi coating, which determined CrFeCoNi coating has higher corrosion resistance than CrMnFeCoNi coating. The excellent resistance to corrosion could be attributed to the structure and chemical compositions of passive film

Published in Journal of Materials Research and Technology

ISSN: 2238-7854 (Print); 2214-0697 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://www.journals.elsevier.com/journal-of-materials-research-and-technology/

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