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首页> 外文会议>第九届真空冶金与表面工程学术会议 >Effect of Ta Interlayer on Interdiffusion Behavior of NiCrAlY Coated γ-TiAl
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Effect of Ta Interlayer on Interdiffusion Behavior of NiCrAlY Coated γ-TiAl

机译：Ta中间层对NiCrAlY涂层γ-TiAl互扩散行为的影响

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摘要

γ-TiAl based alloys are promising candidates for structural materials. However their poor oxidation resistance at temperatures higher than 800℃ restrains their practical use. NiCrAlY can remarkably improve the oxidation resistance of TiAl though serious inward diffusion of Ni from the NiCrAlY coating to the substrate affects the useful life of NiCrAlY. In this paper a Ta interlayer was deposited employing magnetron sputtering between NiCrAlY coating and Y-TiAl substrate as a diffusion barrier. The effect of the diffusion barrier on the interdiffusion of the alloying elements of the γ-TiAl/Ta/NiCrAlY system was investigated at 1000℃ for various time. The phase constitution of the diffusion layers in the interdiffusion zone was identified by XRD and EDS. It seems that the Ta interlayer cannot retard the inward diffusion of Ni effectively.
机译：γ-TiAl基合金是结构材料的有希望的候选者。然而，它们在高于800℃的温度下的抗氧化性差，限制了它们的实际应用。尽管Ni从NiCrAlY涂层向基材的严重向内扩散会影响NiCrAlY的使用寿命，但NiCrAlY可以显着提高TiAl的抗氧化性。在本文中，利用磁控溅射在NiCrAlY涂层和Y-TiAl衬底之间作为扩散阻挡层沉积了Ta中间层。在1000℃，不同时间研究了扩散势垒对γ-TiAl/ Ta / NiCrAlY体系合金元素相互扩散的影响。通过XRD和EDS鉴定了相互扩散区​​中扩散层的相组成。 Ta夹层似乎不能有效地阻止Ni的向内扩散。

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  • 来源
  • 会议地点 Shenyang(CN)
  • 作者

    CHENG Yu-xian; WANG Wen; ZHU Sheng-long; WANG Fu-hui;

  • 作者单位

    State Key Laboratory for Corrosion and Protection, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China;

    State Key Laboratory for Corrosion and Protection, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China;

    State Key Laboratory for Corrosion and Protection, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China;

    State Key Laboratory for Corrosion and Protection, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China;

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

    γ-TiAl; NiCrAlY overlay coating; magnetron sputtering; arc ion plating; oxidation;

    机译：γ-TiAl; NiCrAlY覆盖涂层；磁控溅射；电弧离子镀；氧化;

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