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High Temperature Corrosion Behavior of Cold Deformed 2.25 Cr-1 Mo Steel in SO_2+O_2 Atmosphere

机译:SO_2 + O_2气氛下冷变形2.25 Cr-1 Mo钢的高温腐蚀行为

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摘要

This investigation is primarily aimed to study the high temperature corrosion behavior of different cold deformed low alloy ferritic 2.25 Cr-1 Mo steel in SO_2+O_2 environment. The isothermal corrosion study is carried out in different cold deformed specimen in SO_2+O_2 (ratio 2:1) at 923 K for 24 hours. The scale growth and reaction kinetics are studied and the morphology of the post corroded scales are characterized in SEM, EDS and XRD. The results indicate that all the specimens (undeformed and deformed) show parabolic growth rate. Further corrosion rate increases with the increase of percentage of deformation up to 50.45%. The specimen above 50.45% deformations reveals decrease in corrosion rate with increase percentage of deformation. Finally, corrosion mechanism for the different percentage cold deformed specimens are discussed in details in this paper.
机译:本研究的主要目的是研究不同冷变形低合金铁素体2.25 Cr-1 Mo钢在SO_2 + O_2环境中的高温腐蚀行为。等温腐蚀研究是在923 K下在SO_2 + O_2(比率2:1)的不同冷变形试样中进行的24小时。研究了氧化皮的生长和反应动力学,并在SEM,EDS和XRD中表征了腐蚀后氧化皮的形貌。结果表明,所有样品(未变形和变形)均显示抛物线增长率。进一步的腐蚀速率随着变形百分率的增加而增加,最高可达50.45%。高于50.45%变形的试样表明腐蚀速率随变形百分比的增加而降低。最后,详细讨论了不同百分比的冷变形试样的腐蚀机理。

著录项

  • 来源
    《High temperature materials and processes》 |2015年第2期|107-114|共8页
  • 作者

    D. Ghosh; S. K. Mitra;

  • 作者单位

    NDT & Metallurgy Division, Central Mechanical Engineering Research Institute, Durgapur 713209, India;

    Metallurgical and Materials Engineering Department, National Institute of Technology, Durgapur 713209, India;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    alloy steel; high temperature corrosion; deformation; oxidation; SEM;

    机译:合金钢;高温腐蚀;形变;氧化扫描电镜;

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