Synergism between rare earth cerium(IV) ion and vanillin on the corrosion of cold rolled steel in 1.0 M HCl solution |
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| Authors: | Xianghong Li Shuduan Deng Hui Fu Guannan Mu |
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| Affiliation: | aDepartment of Fundamental Courses, Southwest Forestry University, Kunming 650224, PR China;bDepartment of Wood Science and Technology, Southwest Forestry University, Kunming 650224, PR China;cDepartment of Chemistry, Yunnan University, Kunming 650091, PR China |
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| Abstract: | The synergism between rare earth cerium(IV) ion and vanillin on the corrosion of cold rolled steel (CRS) in 1.0 M HCl solution was first investigated by weight loss, potentiodynamic polarization, ultraviolet and visible spectrophotometer (UV–vis), X-ray photoelectron spectroscopy (XPS) and atomic force microscope (AFM). The results revealed that vanillin had a moderate inhibitive effect, and the adsorption of vanillin obeyed the Temkin adsorption isotherm. For rare earth Ce4+, it had a negligible effect. However, incorporation of Ce4+ with vanillin significantly improved the inhibition performance, and produced strong synergistic inhibition effect. Depending on the results, the synergism mechanism was proposed. |
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| Keywords: | A. Steel B. AFM B. Polarization B. Weight loss C. Acid inhibition |
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