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Influence of chlorides and surface condition on pitting potential of high performance reinforcing steel.

机译:氯化物和表面条件对高性能增强钢点蚀潜力的影响。

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摘要

In order to identify the influence of chlorides and surface finish on pitting potential of high performance reinforcing steel, cyclic polarization scans were performed on types 304, 2201 and 3Cr12 stainless steels and MMFX-II in simulated pore solution to which chloride was incrementally added. Furthermore, the surface condition was investigated with regard to the pitting potential. Pitting potential distributions versus the chloride content and surface finish were obtained. Pitting resistance was lowered as chloride was added and as the surface became rougher. Furthermore, a critical chloride to hydroxide ratio as a function of potential was determined for each material. Finally, according to the results of this study, the MMFX reinforcing steel was considered to have a corrosion performance close to that of Type 2201 stainless steel for bridge use. MMFX-II specimens with a polished surface exhibited more positive pitting potentials than did ones with an as-received finish.
机译:为了确定氯化物和表面光洁度对高性能增强钢点蚀电位的影响,在模拟孔溶液中向304、2201、3Cr12型不锈钢和MMFX-II型钢进行了循环极化扫描,并逐步向其中添加了氯化物。此外,针对点蚀电位研究了表面条件。获得点蚀电位分布与氯化物含量和表面光洁度的关系。当添加氯化物和表面变得更粗糙时,抗点蚀性降低。此外,确定了每种材料的临界氯化物与氢氧化物比率与电位的关系。最后,根据这项研究的结果,MMFX钢筋被认为具有与桥梁用2201型不锈钢相近的腐蚀性能。带有抛光表面的MMFX-II标本比接受原样的标本具有更高的正点蚀电位。

著录项

  • 作者

    Leroux, Virginie Edwige.;

  • 作者单位

    Florida Atlantic University.;

  • 授予单位 Florida Atlantic University.;
  • 学科 Engineering Marine and Ocean.; Engineering Materials Science.
  • 学位 M.S.
  • 年度 2004
  • 页码 93 p.
  • 总页数 93
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 海洋工程;工程材料学;
  • 关键词

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