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首页> 外文期刊>Applied Surface Science >Microstructures and properties of plasma sprayed FeAl/CeO_2/ZrO_2 nano-composite coating
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Microstructures and properties of plasma sprayed FeAl/CeO_2/ZrO_2 nano-composite coating

机译：等离子喷涂FeAl / CeO_2 / ZrO_2纳米复合涂层的组织与性能

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摘要

Commercial FeAl powders and ZrO_2 nano-particles as well as CeO_2 additive were reconstituted into a novel multi-compositional feedstock powders via spray drying. The resulting feedstock powders were used to deposit FeAl/CeO_2/ZrO_2 nano-composite coating by plasma spraying on 1Cr18Ni9Ti stainless steel. An X-ray diffractometer (XRD), a scanning electron microscope equipped with an energy dispersive spectrometer (SEM/EDS), and a field emission scanning electron microscope equipped with an energy dispersive spectrometer (FESEM/EDS) were employed to characterize the microstructure of the as-prepared feedstock powders and nano-composite coating. At the same time, the mechanical properties and friction and wear behavior of the nano-composite coating and pure FeAl coating were comparatively evaluated by using a Vickers microindentation tester and ball-on-disk sliding wear tribotester, respectively. And the wear mechanisms for the two types of coatings are discussed in terms of their microstructure and mechanical properties. Results indicate that the nano-composite coating has a much higher hardness and fracture toughness as well as drastically increased wear resistance than pure FeAl coating, which could be mainly attributed to the reinforcing effect of ZrO_2 nano-particles and partially attributed to the refining effect of CeO_2 in the nano-composite coating.
机译：通过喷雾干燥将市售的FeAl粉末和ZrO_2纳米颗粒以及CeO_2添加剂重构为新型的多组分原料粉末。通过等离子喷涂在1Cr18Ni9Ti不锈钢上，将所得的原料粉末用于沉积FeAl / CeO_2 / ZrO_2纳米复合涂层。使用X射线衍射仪（XRD），配备有能量色散光谱仪（SEM / EDS）的扫描电子显微镜和配备有能量色散光谱仪（FESEM / EDS）的场发射扫描电子显微镜来表征金属的微观结构。制备的原料粉和纳米复合涂料。同时，分别通过使用维氏显微压痕测试仪和球盘式滑动磨损三元酸酯对纳米复合涂层和纯FeAl涂层的力学性能以及摩擦和磨损行为进行了比较评估。并从微观结构和力学性能两方面讨论了两种涂层的磨损机理。结果表明，与纯FeAl涂层相比，纳米复合涂层具有更高的硬度和断裂韧性，并且耐磨性大大提高，这主要归因于ZrO_2纳米颗粒的增强作用，而部分归因于ZrO_2纳米颗粒的细化作用。纳米复合涂层中的CeO_2。

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  • 来源
    《Applied Surface Science》 |2010年第13期|p.4176-4184|共9页
  • 作者

    Bin Yin; Guang Liu; Huidi Zhou; Jianmin Chen; Fengyuan Yan;

  • 作者单位

    State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China Graduate University, Chinese Academy of Sciences, Beijing 100049, China;

    State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China Graduate University, Chinese Academy of Sciences, Beijing 100049, China;

    State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China;

    State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China;

    State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China;

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  • 正文语种 eng
  • 中图分类
  • 关键词

    plasma spraying; intermetallic compound; nano-composite coating; mechanical property; friction and wear;

    机译：等离子喷涂;金属间化合物纳米复合涂料;机械性能摩擦磨损;

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