Inhibition of Zinc Corrosion by Fucoidan in Natural Sea water
来源期刊：Acta Metallurgica Sinica2017年第6期
论文作者：Cui Wang Jie Zhang Xiao-Lin Chen Bin Xiang Ji-Zhou Duan Bao-Rong Hou
文章页码：594 - 600
摘 要：Research on corrosion behaviour of zinc in natural sea water without and with fucoidan was carried out by potentiodynamic polarisation test and electrochemical impedance spectroscopy(EIS). The results revealed that fucoidan serves as a good inhibitor for zinc in sea water. Polarisation curves suggested that corrosion potential values shifted to the positive ones after adding inhibitor and fucoidan retards anodic reaction more. Thus, fucoidan can be acted as anodic inhibitor. EIS results showed two phenomena including a charge transfer and an adsorption film. The corrosion inhibition of fucoidan was further confirmed by the scanning electron microscope(SEM) and atomic force microscope(AFM)analysis. Langmuir’s adsorption isotherm was found the appropriate adsorption model.
Cui Wang1,2，Jie Zhang2，Xiao-Lin Chen3，Bin Xiang1，Ji-Zhou Duan2，Bao-Rong Hou2
1. College of Chemistry and Chemical Engineering, Chongqing University2. Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences3. Institute of Oceanology, Chinese Academy of Sciences
摘 要：Research on corrosion behaviour of zinc in natural sea water without and with fucoidan was carried out by potentiodynamic polarisation test and electrochemical impedance spectroscopy(EIS). The results revealed that fucoidan serves as a good inhibitor for zinc in sea water. Polarisation curves suggested that corrosion potential values shifted to the positive ones after adding inhibitor and fucoidan retards anodic reaction more. Thus, fucoidan can be acted as anodic inhibitor. EIS results showed two phenomena including a charge transfer and an adsorption film. The corrosion inhibition of fucoidan was further confirmed by the scanning electron microscope(SEM) and atomic force microscope(AFM)analysis. Langmuir’s adsorption isotherm was found the appropriate adsorption model.
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