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Microstructure and mechanical properties of Ni-based high temperature solid-lubricating composites

机译：镍基高温固体润滑复合材料的组织和力学性能

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摘要

The poor mechanical properties are the main obstacle for the present solid-lubricating bulk materials in practical applications. In this work, the microstructure and high temperature mechanical properties of the solid-lubricating NiCrMoAl-12.5 wt%Ag-xCaF_2/BaF_2 eutectic (x=5 or 10 wt%) composites, denoted as the 5 F and 10 F respectively, have been evaluated. Both the composites display superior tensile strength of above 300 MPa from room temperature (RT) to 600 ℃ and extraordinary compressive strength that is above 500 MPa at 800 ℃. These superior properties make the composite particularly suitable for bearing applications where the compression strength is an engineering factor to be preferably considered.
机译：差的机械性能是目前的固体润滑散装材料在实际应用中的主要障碍。在这项工作中，固体润滑的NiCrMoAl-12.5 wt％Ag-xCaF_2 / BaF_2共晶（x = 5或10 wt％）复合材料的微观结构和高温力学性能已分别表示为5 F和10F。评估。两种复合材料从室温（RT）到600℃均具有300 MPa以上的优异拉伸强度，而800℃则具有500 MPa以上的非凡压缩强度。这些优异的性能使复合材料特别适用于其中抗压强度是要优先考虑的工程因素的轴承应用。

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  • 来源
    《Materials Science and Engineering》 |2017年第13期|475-481|共7页
  • 作者

    Fei Li; Jun Cheng; Shengyu Zhu; Junying Hao; Jun Yang; Weimin Liu;

  • 作者单位

    State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, PR China,University of Chinese Academy of Sciences, Beijing 100039, PR China;

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

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

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

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

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

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

    Mechanical properties; High temperature; Solid-lubricating; Ni-based composites;

    机译：机械性能高温;固体润滑;镍基复合材料;

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