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首页> 外文会议>Leeds-Lyon Symposium on Tribology; 19990914-17; Leeds(GB) >Behaviour of colloidally-dispersed solid particles in very thin film lubricated contacts
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Behaviour of colloidally-dispersed solid particles in very thin film lubricated contacts

机译：胶态分散的固体颗粒在极薄的润滑触点中的行为

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摘要

The behaviour of colloidal solid particles dispersed in lubricants is of interest for a number of reasons. Firstly, many of the additives used in lubricants are actually in the colloidal rather than the true, solution state. Secondly, soot in engine oils and lubricant degradation products are generally colloidal. Thirdly, there is an increasing interest in the development of lubricants containing dispersed nanoparticles to limit friction and wear. For all the above it is important to understand when and how colloidal solid particles pass through lubricated contacts and also their behaviour in such contacts. In the current study, the behaviour of dispersed particles covering a range of sizes between 20 and 200 nm diameter has been studied in lubricating contacts. Optical interferometry has been employed to explore the behaviour of such particles in very thin film contacts. Friction has also been measured. Of particular interest was the effect of slide-roll ratio on particle entrainment and the influence of the ratio of the particle diameter to the elastohydrodynamic lubricant film thickness.
机译：由于多种原因，分散在润滑剂中的胶态固体颗粒的行为是令人关注的。首先，润滑剂中使用的许多添加剂实际上是胶体状态，而不是真正的溶液状态。其次，发动机油中的烟灰和润滑剂降解产物通常是胶体。第三，人们对开发包含分散的纳米颗粒以限制摩擦和磨损的润滑剂的兴趣日益增长。对于以上所有内容，重要的是要了解胶体固体颗粒何时以及如何通过润滑接触，以及它们在这种接触中的行为。在当前的研究中，已经研究了润滑接触中覆盖粒径范围在20到200 nm之间的分散颗粒的行为。光学干涉测量法已被用来探索这种薄膜在非常薄的薄膜接触中的行为。还测量了摩擦。特别令人感兴趣的是滑动比对颗粒夹带的影响以及粒径与弹性流体动力润滑剂膜厚度的比的影响。

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