TRIBOCHEMICAL REACTIONS AT THE WATER-LUBRICATED SILICON NITRIDE INTERFACE: GEL FORMATION MECHANISM

机译：水润滑的硅氮化物界面的摩擦化学反应：凝胶形成机理

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Silicon-based ceramics such as silicon nitride can be very effectively lubricated by water under certain conditions (1-3). After a wear-in period a condition of very low friction coefficient ( < 0.01) can be achieved for average contact pressures of 40 MPa and lower. Tomizawa & Fischer (1) proposed a chemomechanical polishing mechanism to reduce surface roughness enabling the onset of hydrodynamic lubrication by water. We suggest that there is an additional soft hydrated silica gel layer adhering to the rubbing surfaces that provides a deformable protective film to enable effective hydrodynamic lubrication of water and protect the surfaces from occasional asperity contacts. The existence of such films was indicated by the nanomechanical data performed on worn surfaces.

机译：在某些条件下（1-3），水可以非常有效地润滑硅基陶瓷（例如氮化硅）。磨合期过后，对于40 MPa及以下的平均接触压力，可以实现极低的摩擦系数（<0.01）。 Tomizawa＆Fischer（1）提出了一种化学机械抛光机制，以减少表面粗糙度，从而开始用水进行流体动力润滑。我们建议在摩擦表面上粘附一个附加的软化水合硅胶层，该层可提供可变形的保护膜，从而能够对水进行有效的流体动力润滑，并保护表面免受偶然的粗糙接触。通过在磨损表面上进行的纳米力学数据表明了这种膜的存在。

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来源
《World Tribology Congress III vol.1; 20050912-16; Washington,DC(US)》|2005年|P.675-676|共2页
会议地点 WashingtonDC(US)
作者
Richard S. Gates; Z. Charles Ying; Stephen M. Hsu;
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National Institute of Standards and Technology 100 Bureau Drive, MS 8526 Gaithersburg, MD 20899;

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原文格式 PDF
正文语种 eng
中图分类机械摩擦、磨损与润滑;
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4. TRIBOCHEMICAL REACTIONS AT THE WATER-LUBRICATED SILICON NITRIDE INTERFACE: GEL FORMATION MECHANISM [C] . Richard S. Gates, Z. Charles Ying, Stephen M. Hsu World Tribology Congress . 2005

机译：水润滑氮化硅界面的杂色化学反应：凝胶形成机制
5. Sol-gel coating of particulate reinforcement and control of interface reaction in aluminum-silicon carbide particulate composites. [D] . Teng, Yi-Hsien Harry. 1993

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6. Catalytic Effects of Cr on Nitridation of Silicon and Formation of One-dimensional Silicon Nitride Nanostructure [O] . Feng Liang, Lilin Lu, Liang Tian, -1

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8. Structure, Formation Mechanisms and Kinetics of Reaction-Bonded Silicon Nitride. [R] . Jennings, H. M., Richman, M. H. 1976

机译：反应键合氮化硅的结构，形成机理和动力学。

TRIBOCHEMICAL REACTIONS AT THE WATER-LUBRICATED SILICON NITRIDE INTERFACE: GEL FORMATION MECHANISM

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