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首页> 外文期刊>Applied Surface Science >Design and fabrication of enhanced corrosion resistance Zn-Al layered double hydroxides films based anion-exchange mechanism on magnesium alloys
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Design and fabrication of enhanced corrosion resistance Zn-Al layered double hydroxides films based anion-exchange mechanism on magnesium alloys

机译：基于镁合金阴离子交换机理的增强耐蚀性Zn-Al层状双氢氧化物膜的设计与制备

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摘要

Layered double hydroxides (LDHs) with brucite-like layer structure and the facile exchangeability of intercalated anions had attracted tremendous interest in many fields because of their great importance for both fundamental studies and practical applications. Herein zinc-aluminum layered double hydroxides (Zn-Al LDHs) films intercalated with nitrate anions on the magnesium alloy substrate were designed and fabricated via a facile hydrothermal crystallization method. In order to obtain better corrosion resistance, chloride and vanadate anions were intercalated into the LDHs interlayers via the anion-exchange reaction. X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy and scanning electronic microscopy (SEM) were used to examine structure, composition and morphology of the Zn-Al-NO3 LDHs, Zn-Al-Cl LDHs and Zn-Al-VOX LDHs films. The corrosion resistance of the Zn-Al LDHs with different anion films was estimated by the electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization measurement. EIS and polarization curves measurements revealed that the magnesium alloy could be effectively protected by the Zn-Al-Cl LDHs and Zn-Al-VOX LDHs films due to the blocking effect of chloride anions and the control-release ability of vanadate anions. (C) 2017 Elsevier B.V. All rights reserved.
机译：具有水镁石样层状结构的层状双氢氧化物（LDHs）和插层阴离子的便捷交换性，由于其对基础研究和实际应用都非常重要，因此在许多领域引起了极大的兴趣。本文通过一种方便的水热结晶法设计并制备了在镁合金基底上嵌入硝酸根阴离子的锌铝层状双氢氧化物（Zn-Al LDHs）薄膜。为了获得更好的耐腐蚀性，氯离子和钒酸根阴离子通过阴离子交换反应插入LDHs中间层。使用X射线衍射（XRD），傅立叶变换红外（FT-IR）光谱和扫描电子显微镜（SEM）来检查Zn-Al-NO3 LDH，Zn-Al-Cl LDH和Zn的结构，组成和形态-Al-VOX LDHs薄膜。通过电化学阻抗谱（EIS）和电势极化测量来评估具有不同阴离子膜的Zn-Al LDHs的耐腐蚀性。 EIS和极化曲线测量表明，由于氯离子的阻断作用和钒酸根离子的控制释放能力，镁合金可以被Zn-Al-Cl LDHs和Zn-Al-VOX LDHs膜有效地保护。 （C）2017 Elsevier B.V.保留所有权利。

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  • 来源
    《Applied Surface Science》 |2017年第may15期|246-253|共8页
  • 作者

    Zhou Meng; Yan Luchun; Ling Hao; Diao Yupeng; Pang Xiaolu; Wang Yanlin; Gao Kewei;

  • 作者单位

    Univ Sci & Technol Beijing, Dept Mat Phys & Chem, Beijing 100083, Peoples R China;

    Univ Sci & Technol Beijing, Dept Mat Phys & Chem, Beijing 100083, Peoples R China;

    Univ Sci & Technol Beijing, Dept Mat Phys & Chem, Beijing 100083, Peoples R China;

    Univ Sci & Technol Beijing, Dept Mat Phys & Chem, Beijing 100083, Peoples R China;

    Univ Sci & Technol Beijing, Dept Mat Phys & Chem, Beijing 100083, Peoples R China;

    Univ Sci & Technol Beijing, Dept Mat Phys & Chem, Beijing 100083, Peoples R China;

    Univ Sci & Technol Beijing, Dept Mat Phys & Chem, Beijing 100083, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Layered double hydroxides; Anion-exchange; Magnesium alloy; Corrosion resistance;

    机译：层状双氢氧化物阴离子交换镁合金耐蚀性;

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