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首页> 外文期刊>Corrosion science >Steam oxidation resistance of Ni-aluminide/Fe-aluminide duplex coatings formed on creep resistant ferritic steels by low temperature pack cementation process
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Steam oxidation resistance of Ni-aluminide/Fe-aluminide duplex coatings formed on creep resistant ferritic steels by low temperature pack cementation process

机译:耐蠕变铁素体钢在低温包装渗碳工艺中形成的镍铝/铁铝双相涂层的抗蒸汽氧化性能

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摘要

Steam oxidation resistance and thermal stability were studied at 650 ℃ for a coating with an outer Ni_2Al_3 layer and an inner Fe_2Al_5 layer formed on P92 steel surface. The parabolic rate law of oxidation was obeyed only in less than 2000 h with positive deviations occurring at longer oxidation times. The outer layer of the coating was transformed to NiAl during oxidation, but it remained stable once it was formed. The mechanisms for the enhanced thermal stability were discussed and a simple approach to enhancing the lifetime of the coating was proposed.
机译:研究了在P92钢表面上形成Ni_2Al_3外层和Fe_2Al_5内层的涂层在650℃下的耐蒸汽氧化性和热稳定性。氧化的抛物线速率定律仅在不到2000 h内服从,在较长的氧化时间出现正偏差。涂层的外层在氧化过程中转变为NiAl,但是一旦形成,它便保持稳定。讨论了提高热稳定性的机理,并提出了一种提高涂层寿命的简单方法。

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  • 来源
    《Corrosion science》 |2011年第1期|p.496-502|共7页
  • 作者单位

    School of Materials and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, PR China;

    rnSchool of Materials and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, PR China;

    rnSchool of Materials and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, PR China;

    rnSchool of Computing, Engineering and Information Sciences, Northumbria University, Ellison Building, Ellison Place, Newcastle upon Tyne NE1 8ST, UK;

    rnSchool of Computing, Engineering and Information Sciences, Northumbria University, Ellison Building, Ellison Place, Newcastle upon Tyne NE1 8ST, UK;

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

    A.metal coatings; A. intermetallics; A. steel; C. oxidation; C. high temperature corrosion;

    机译:A.金属涂层;A.金属间化合物;A.钢;C.氧化;C.高温腐蚀;

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