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Superlubricity of silicone oil achieved between two surfaces by running-in with acid solution

机译：通过使用酸溶液延时在两个表面之间实现的硅油的超级润滑性

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摘要

In this paper, we showed that the superlubricity of silicone oil can be achieved between friction surfaces (Si3N4/glass) by running-in with an acid solution. The friction coefficient of silicone oil can be reduced to about 0.004, which is only one-thirtieth of its original value (mu = 0.13). Experimental results indicate that the formation of a circular plane under the action of hydrogen ions on the worn region of the ball is closely linked to superlubricity, while the topography of the track on the glass substrate has no obvious effect on the superlubricity. In addition, the tribochemical reaction between Si3N4 and water can lead to the reduction of the friction coefficient in mixed lubrication, but it has no effect on the friction coefficient in hydrodynamic lubrication. According to these results, a superlubricity mechanism was proposed, in which the two friction surfaces form a micro-slope plain bearing, owing to the effect of hydrogen ions, and the silicone oil forms a hydrodynamic film at a certain speed.
机译：在本文中，我们发现，硅油的超润滑可以摩擦表面（氮化硅/玻璃）之间通过磨合用酸溶液来实现。硅油的摩擦系数可以降低到约0.004，这是唯一的三十分之一其原始值的（亩= 0.13）。实验结果表明，一个圆形平面的球上的磨损区域的氢离子的作用下形成是密切相关的超润滑，而在玻璃基板上的轨道的地形对超润滑无明显影响。此外，Si3N4和水之间的摩擦化学反应可导致在混合润滑，摩擦系数的降低，但对在流体动力润滑的摩擦系数没有影响。根据这些结果，一个超润滑机构提出，其中，所述两个摩擦表面形成微斜率滑动轴承，由于氢离子的效果，和硅油以一定的速度形成流体动力膜。

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  • 来源
    《RSC Advances》 |2015年第39期|共8页
  • 作者

    Li Jinjin; Zhang Chenhui; Deng Mingming; 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;

    Tsinghua Univ State Key Lab Tribol Beijing 100084 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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