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Investigation of ultra-low friction on steel surfaces with diketone lubricants

机译：Diketone润滑剂钢表面上超低摩擦的研究

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摘要

In this study, the lubricating properties of ethylacetophenone (EAP) solutions with different benzoylacetone (BZA) concentrations on steel surfaces were investigated. The results indicate that with an increase in the BZA concentration in the solution, the friction coefficient decreases, and an ultra-low friction coefficient (mu similar or equal to 0.005-0.008) is obtained for the solution with 50 wt% BZA concentration. This demonstrates that both the applied normal load and the sliding velocity have significant influence on the realization of ultra-low friction for the 50 wt% BZA solution. Furthermore, the chemical states of the friction surfaces and the components of the 50 wt% BZA solution were detected via X-ray photoelectron spectroscopy (XPS) and infrared spectroscopy (IR), respectively. The analyses reveal that a tribochemical reaction occurs between the BZA molecules and the rubbing surfaces, and the chelate not only can disperse in the solution, but can also form chemical adsorption layers on the rubbing surfaces. In addition, the mechanism of ultra-low friction has been discussed based on the results of these analyses. Both the influence of the hydrodynamic effect and the existence of chemically absorbed films on the steel surfaces lead to a reduction in the friction coefficient. This study reveals that diketone is a promising lubricant for ultra-low friction and has great potential in industrial applications.
机译：在这项研究中，乙基苯乙酮的（EAP）具有不同的解决方案，苯甲酰丙酮的润滑性能（BZA）上的钢表面的浓度进行了研究。结果表明，随着在溶液中的浓度BZA，摩擦系数降低，和超低摩擦系数（亩类似或等于0.005-0.008），用于与50％（重量）BZA浓度溶液获得。这表明，无论是施加正常负载和滑动速度对实现超低摩擦为50％（重量）BZA溶液的显著影响。此外，还通过X射线光电子能谱（XPS）和红外光谱（IR）分别检测到的摩擦表面和50％（重量）BZA溶液的组分的化学状态。这些分析揭示，BZA分子和摩擦表面之间发生摩擦化学反应，和螯合不仅能在溶液中分散，也可以形成摩擦表面上的化学吸附层。此外，超低摩擦的机构已经基于这些分析结果进行了讨论。两者的流体动力效应的影响，并在钢表面上的化学吸附膜的存在导致摩擦系数降低。这项研究表明，二酮是超低摩擦有前途的润滑剂，并在工业应用中的巨大潜力。

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  • 来源
    《RSC Advances》 |2018年第17期|共7页
  • 作者

    Zhang Shumin; Zhang Chenhui; Li Ke; Luo Jianbin;

  • 作者单位

    Tsinghua Univ State Key Lab Tribol Beijing 100084 Peoples R China;

    Tsinghua Univ State Key Lab Tribol Beijing 100084 Peoples R China;

    Wuhan Univ Technol Intelligent Transport Syst Res Ctr Wuhan 430063 Hubei Peoples R China;

    Tsinghua Univ State Key Lab Tribol Beijing 100084 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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