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Cyclic Oxidation and Hot Corrosion Behavior of Nickel-Iron-Based Superalloy

机译：镍铁基高温合金的循环氧化和热腐蚀行为

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摘要

The high temperature oxidation and hot corrosion behavior of nickel-iron-based superalloy are studied at 900° and 1000°C. The significant role of alloying elements with respect to the exposed medium is studied in detail. The mass change per unit area was catastrophic for the samples exposed at 1000°C and gradual increase in mass change was observed at 900°C for both the environments. The exposed samples were further investigated with SEM, EDS and XRD analysis to study the metallurgical characteristics. The surface morphology has expressed the in situ nature of the alloy and its affinity toward the environment. The EDS and XRD analysis has evidently proved the presence of protective oxides formation on prolonged exposure at elevated temperature. The predominant oxide formed during the exposure at high temperature has a major contribution toward the protection of the samples. The nickel-iron-based superalloy is less prone to oxidation and hot corrosion when compared to the existing alloy in gas turbine engine simulating marine environment.
机译：研究了镍铁基高温合金在900°C和1000°C的高温氧化和热腐蚀行为。详细研究了合金元素对暴露介质的重要作用。对于暴露于1000°C的样品，每单位面积的质量变化是灾难性的，在两种环境下，在900°C时均观察到质量变化的逐渐增加。通过SEM，EDS和XRD分析进一步对暴露的样品进行了研究，以研究其冶金特性。表面形态已经表明了合金的原位性质及其对环境的亲和力。 EDS和XRD分析显然证明了在高温下长时间暴露会形成保护性氧化物。在高温下暴露过程中形成的主要氧化物对样品的保护起主要作用。与模拟海上环境的燃气轮机发动机中的现有合金相比，镍铁基高温合金不易发生氧化和热腐蚀。

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  • 来源
    《High temperature materials and processes》 |2018年第2期|173-180|共8页
  • 作者

    D. Chellaganesh; M. Adam Khan; J. T. Winowlin Jappes; S. Sathiyanarayanan;

  • 作者单位

    Department of Mechanical Engineering, Kalasalingam University, Krishnankoil, Tamil Nadu, India;

    Department of Mechanical Engineering, International Research Centre (IRC), Kalasalingam University, Krishnankoil, Tamil Nadu, India;

    Research Faculty, Mechanical Engineering, International Research Centre (IRC), Kalasalingam University, Krishnankoil, Tamil Nadu, India;

    Corrosion and Materials Protection Division, CSIR-Central Electrochemical Research Institute, Karaikudi 630 003, Tamilnadu, 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

    superalloy; oxidation; corrosion; salt; oxides;

    机译：高温合金;氧化;腐蚀;盐;氧化物;

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