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Synthesis of anodizing composite films containing superfine Al_2O_3 and PTFE particles on Al alloys

机译:铝合金上含Al_2O_3和PTFE超细颗粒的阳极氧化复合膜的合成。

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摘要

Anodized composite films containing superfine Al_2O_3 and PTFE particles were prepared on 2024 Al alloy using an anodizing method. The microstructures and properties of the films were studied by scanning electron microscopy, optical microscopy and X-ray diffraction. Friction wear tests were performed to evaluate the mechanical properties of the composites. Results indicate that the composite films with reinforced Al_2O_3 and PTFE two-particles have reduced friction coefficients and relatively high micro-hardness. The friction coefficient can be as small as 0.15, which is much smaller than that of an oxide film prepared under the same conditions but without adding any particles (0.25), while the microhardness can reach as high as 404 HV. When rubbed at room temperature for 20 min during dry sliding friction tests, the wear loss of the film was about 16mg, which is about the half of that of the samples without added particles. The synthesized composite films that have good anti-wear and self-lubricating properties are desirable for oil-free industrial machinery applications.
机译:采用阳极氧化法在2024铝合金上制备了含有Al_2O_3和PTFE超细颗粒的复合阳极氧化膜。通过扫描电子显微镜,光学显微镜和X射线衍射研究了薄膜的微观结构和性能。进行摩擦磨损测试以评估复合材料的机械性能。结果表明,Al_2O_3和PTFE两粒子增强复合膜的摩擦系数降低,显微硬度较高。摩擦系数可小至0.15,这比在相同条件下但不添加任何颗粒(0.25)的情况下制备的氧化膜小得多,而显微硬度则可高达404 HV。在干式滑动摩擦试验中于室温下摩擦20分钟时,薄膜的磨损损失约为16mg,约为未添加颗粒的样品的一半。具有良好的抗磨和自润滑性能的合成复合膜是无油工业机械应用所需要的。

著录项

  • 来源
    《Applied Surface Science》 |2010年第22期|p.6518-6525|共8页
  • 作者单位

    Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), Northeastern University, Shenyang 110004, China,Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI 48109, USA;

    Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), Northeastern University, Shenyang 110004, China;

    Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), Northeastern University, Shenyang 110004, China;

    Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), Northeastern University, Shenyang 110004, China;

    Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI 48109, USA;

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

    anodizing composite films; particle-reinforcement; wear; self-lubricating properties;

    机译:复合膜阳极氧化;颗粒增强穿;自润滑性能;

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