The half-wetted bearing. Part 2: Potential application in low load contacts
The half-wetted bearing. Part 2: Potential application in low load contacts
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DOI：
10.1243/135065003321164776
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发表时间：
2003-01
期刊：
影响因子：
--
通讯作者：
H. Spikes
中科院分区：
文献类型：
--
作者：
H. Spikes
在第1部分中，建立了一个流体动力润滑模型来描述轴承内的流动和压力，其中润滑剂与一个轴承表面具有无滑移边界条件，但在临界剪切应力下会与另一个轴承表面滑动。本文考察了目前固体表面液体滑移的证据，并概述了低负荷接触润滑中固有的问题。然后，论文表明，一个表面非常光滑和疏油的轴承设计，从而允许润滑油滑动发生，而另一个表面通常是亲油的，可以在低负载条件下提供非常低的摩擦系数，例如在微机电系统和硬盘驱动器中。
Abstract In a companion paper (Part 1) a hydrodynamic lubrication model was developed to describe the flow and pressure in a bearing in which the lubricant has a no-slip boundary condition with one bearing surface but can slip against the other surface at a critical shear stress. This paper examines the current evidence for liquid slip at solid surfaces and outlines the problems inherent in the lubrication of low load contacts. The paper then shows that a bearing design in which one surface is very smooth and oleophobic, thereby allowing lubricant slip to occur, while the other surface is conventionally oleophilic, may provide a very low friction coefficient in low load conditions such as are present in microelectromechanical systems and hard disk drives.