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接口无形化控制多层DLC/WC涂层的最大耐磨性.

Li Ma1, Narguess Nemati1, Dae-Eun Kim2

  • 1Surface Mechanics and Tribology Group, Department of Mechanical and Production Engineering, Aarhus University, 8000 Aarhus C, Denmark.

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PubMed
概括

优化多层涂层厚度可以提高耐磨性. 关键双层厚度通过限制脱位运动来最大限度地提高划伤硬度,但超薄层 (<2 nm) 通过无形化来降低硬度.

关键词:
变形无形化 变形无形化像钻石一样的碳.多层涂层是多层的涂层.纳米硬度 纳米硬度 纳米硬度不连贯的接口是不连贯的.塑性的可塑性 塑性硬度 硬度 硬度 硬度传输电子显微镜的使用

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科学领域:

  • 材料科学 材料科学 材料科学
  • 表面工程是什么?表面工程是什么?
  • 部落学 (tribology) 是一个学科.

背景情况:

  • 多层涂层可以保护表面免受磨损和损坏.
  • 涂层结构,特别是层状形态,对于耐磨性至关重要.

研究的目的:

  • 为了研究层层厚度对DLC/WC多多层涂层磨损性能的影响.
  • 为了确定最佳的双层厚度,以提高抗划痕硬度和耐磨性.

主要方法:

  • 系统的实验研究.
  • 大规模的分子动力学 (MD) 模拟.

主要成果:

  • 确定了关键的双层厚度,以获得最大的划痕硬度和耐磨性.
  • 将WC层厚度降低到一个值 (2nm) 以下,导致无形化和硬度降低.
  • 脱位运动限制提高了硬度,达到关键厚度.

结论:

  • 该研究提供了一种优化多重纳米层涂层性能的方法.
  • 了解关键厚度是设计优质耐磨涂料的关键.