Scholarlink

<p>On the basis of the application background of microalloyed weathering steels, this paper investigates four weathering steels with various phosphorus contents under simulated industrial atmospheric conditions via cyclic corrosion tests. The rust layer of the weathering steel was mainly composed of <i>α</i>-FeOOH, <i>γ</i>-FeOOH, and Fe<sub>3</sub>O<sub>4</sub>/<i>γ</i>-Fe<sub>2</sub>O<sub>3</sub>, and there was a small amount of sulfate and phosphate. In this study, the optimal phosphorus content for the corrosion-resistant steel was 0.130%, which achieved the best corrosion resistance. Phosphorus appeared in the form of phosphate in the early stage of corrosion and, after forming a stable rust layer, provided transformation sites for <i>α</i>-FeOOH. Phosphate can also accelerate the air oxidation of Fe<sup>2+</sup> to Fe<sup>3+</sup> and prevent the crystal growth of the corrosion products.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Effects of phosphorus on the corrosion characteristics of weathering steel in industrial environments

  • 期刊论文

  • 发表日期：

    2025年9月16日

查看全文
  • Le Gan,
  • Yicong Lei,
  • Yu Jiang,
  • Charles W Siyasiya,
  • Zhenghua Tang

摘要

On the basis of the application background of microalloyed weathering steels, this paper investigates four weathering steels with various phosphorus contents under simulated industrial atmospheric conditions via cyclic corrosion tests. The rust layer of the weathering steel was mainly composed of α-FeOOH, γ-FeOOH, and Fe3O4/γ-Fe2O3, and there was a small amount of sulfate and phosphate. In this study, the optimal phosphorus content for the corrosion-resistant steel was 0.130%, which achieved the best corrosion resistance. Phosphorus appeared in the form of phosphate in the early stage of corrosion and, after forming a stable rust layer, provided transformation sites for α-FeOOH. Phosphate can also accelerate the air oxidation of Fe2+ to Fe3+ and prevent the crystal growth of the corrosion products.