Electrochemical Behavior of Fe-Cr-Mo-C-B Amorphous Alloy Coating in HCl Solution

Qing Jun Chen; Lin Li Hu; Xian Liang Zhou; Xiao Zhen Hua

doi:10.4028/www.scientific.net/AMR.291-294.18

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Electroless Ni-P-PTFE Composite Coatings on Titanium Alloy and Their Tribological Properties
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Electrochemical Behavior of Fe-Cr-Mo-C-B Amorphous Alloy Coating in HCl Solution
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Comparison in Tribological Properties of YBa₂Cu₃O_X/Ag and Bi₂Sr₂CaCu₂O_X/Ag Self-Lubricating Composites
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A Study on Carbon Electro-Conductive Filler for the Epoxy Conductive Coating
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A Comparative Study of Zirconium-Based Coating on Cold Rolled Steel
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 291-294Electrochemical Behavior of Fe-Cr-Mo-C-B Amorphous...

Electrochemical Behavior of Fe-Cr-Mo-C-B Amorphous Alloy Coating in HCl Solution

Abstract:

The corrosion behavior of Fe₄₄Cr₁₆Mo₁₆C₁₈B₆ amorphous alloy coating was studied by electrochemical polarization curves and electrochemical impedance spectroscopy (EIS) in different HCl concentration solution at room temperature. Experimental results show that the polarization curves of the coating present a wide passivation range under open circuit potential and i_corr increase from 1.049×10^-5A/cm² to 1.487×10^-5A/cm² with HCl solution from 0.5M to 2.0M. The EIS of coating are composed of high-frequency inductive loop and low-frequency capacitance arc, which is different from the EIS of other amorphous alloys, the Rt is up to 5789Ω·cm² in 2M HCl solution. The especial equivalent circuit model R(RL)(Q(R(QRW))) can better interpret the corrosion behavior of the amorphous alloy coating.

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Advanced Materials Research (Volumes 291-294)

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18-23

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https://doi.org/10.4028/www.scientific.net/AMR.291-294.18

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July 2011

Authors:

Qing Jun Chen, Lin Li Hu, Xian Liang Zhou, Xiao Zhen Hua

Keywords:

Amorphous Alloy Coating, EIS, Electrochemical Polarization Curves

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