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首页> 外文期刊>Corrosion science >Modifications of the hydrotalcite film on AZ31 Mg alloy by phytic acid: The effects on morphology, composition and corrosion resistance
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Modifications of the hydrotalcite film on AZ31 Mg alloy by phytic acid: The effects on morphology, composition and corrosion resistance

机译:植酸对AZ31镁合金上水滑石膜的改性:对形貌,组成和耐蚀性的影响

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摘要

An environmentally friendly corrosion inhibitor phytic acid (PA) has been successfully added to modify the hydrotalcite (HT) film by adsorption and ion exchange approaches. In alkali PA solution, PO_4~(3-) cannot substitute CO_3~(2-) in the HT, but adsorb to the external surface; H_2PO_~-/HPO_4~(2-) can insert into the HT after decarbonation under acidic condition. Partial decomposition occurs under both conditions. The PA/pH 11-HT film shows superior stability and lasting protective efficiency, and also can provide self-healing effect associated with the P adsorption in the filament The worse resistance of the PA/pH 6.5-HT film may be related to the micro-cracks.
机译:已经成功添加了一种环保型缓蚀剂植酸(PA),以通过吸附和离子交换方法改性水滑石(HT)膜。在碱性PA溶液中,PO_4〜(3-)不能代替HT中的CO_3〜(2-),而是吸附在外表面上。 H_2PO_〜-/ HPO_4〜(2-)在酸性条件下脱碳后可以插入HT中。在两种情况下都会发生部分分解。 PA / pH 11-HT膜显示出优异的稳定性和持久的保护效率,并且还可以提供与细丝中P吸附相关的自修复效果。PA/ pH 6.5-HT膜的较差电阻可能与微-裂纹。

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  • 来源
    《Corrosion science》 |2013年第9期|130-138|共9页
  • 作者单位

    State Key laboratory for Corrosion and Protection, Institute of Metal Research. Chinese Academy of Sciences, 62 Wencui Road, Shenyang 110016, China;

    State Key laboratory for Corrosion and Protection, Institute of Metal Research. Chinese Academy of Sciences, 62 Wencui Road, Shenyang 110016, China;

    State Key laboratory for Corrosion and Protection, Institute of Metal Research. Chinese Academy of Sciences, 62 Wencui Road, Shenyang 110016, China;

    State Key laboratory for Corrosion and Protection, Institute of Metal Research. Chinese Academy of Sciences, 62 Wencui Road, Shenyang 110016, China;

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

    A. Magnesium; B. IR spectroscopy; B.XRD; B. EIS; C. Repassivation;

    机译:A.镁B.红外光谱;X射线衍射;B.EIS;C.钝化;

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