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首页> 外文期刊>JCT research >Treatment of Mg powder with carbonic acid and the effect of treatment variables and treated Mg ratios on coating performance in salt spray tests
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Treatment of Mg powder with carbonic acid and the effect of treatment variables and treated Mg ratios on coating performance in salt spray tests

机译：盐雾试验中碳酸处理镁粉及其处理变量和处理镁比对涂层性能的影响

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摘要

Magnesium-rich primers (MgRPs) are known to exhibit excellent corrosion resistance during natural weathering due to the formation of a controlled and complex cathodic protective layer which includes but is not limited to changing combinations of magnesium metal, magnesium hydroxide, and magnesium carbonate each during film formation, cure, and environmental exposure. Pretreating Mg powder with carbonic acid before incorporation into coatings has been shown to enhance the corrosion resistance of MgRPs. In an earlier study, the conditions for treating Mg powder and the effects of variables such as time and the order of addition were evaluated to determine optimized treatment conditions. In this study, the treatment process was analyzed further to better understand the nature of the carbonation process and the effect of treatment variables on the overall corrosion protection process. Coatings prepared with different ratios of treated and untreated Mg were evaluated via ASTM B117 salt fog exposure to determine the optimized ratio of treated and untreated pigments for maximum corrosion protection.
机译：众所周知，富镁底漆（MgRPs）在自然风化过程中表现出优异的耐腐蚀性，这是由于形成了受控且复杂的阴极保护层，该保护层包括但不限于镁金属，氢氧化镁和碳酸镁在每次使用过程中的变化组合成膜，固化和环境暴露。已显示在掺入涂料之前用碳酸对镁粉进行预处理可以增强MgRP的耐腐蚀性。在较早的研究中，评估了处理镁粉的条件以及变量（例如时间和添加顺序）的影响，以确定最佳的处理条件。在这项研究中，对处理过程进行了进一步分析，以更好地了解碳化过程的性质以及处理变量对整个腐蚀防护过程的影响。通过ASTM B117盐雾暴露评估以不同比例处理和未处理的镁制得的涂料，以确定处理和未处理颜料的最佳比例，以实现最大程度的腐蚀防护。

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  • 来源
    《JCT research》 |2013年第4期|475-483|共9页
  • 作者

    Tacibaht Turel; Shashi S. Pathak; Sharathkumar K. Mcndon; Michael D. Blanton; James W. Rawlins;

  • 作者单位

    Youngstown State University, Youngstown, OH 44555,USA;

    School of Polymers and High Performance Materials, The University of Southern Mississippi, Hattiesburg, MS 39406,USA;

    School of Polymers and High Performance Materials, The University of Southern Mississippi, Hattiesburg, MS 39406,USA;

    School of Polymers and High Performance Materials, The University of Southern Mississippi, Hattiesburg, MS 39406,USA;

    School of Polymers and High Performance Materials, The University of Southern Mississippi, Hattiesburg, MS 39406,USA;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Mg-rich primers; Corrosion performance; Salt fog tests;

    机译：富镁底漆;腐蚀性能;盐雾试验;

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