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首页> 外文会议>American Society of Mechanical Engineers(ASME)/Society of Tribologists and Lubrication Engineers(STLE) International Joint Tribology Conference; 20071022-24; San Diego,CA(US) >EXPERIMENTAL MODELISATION OF ORGANOSULPHURS TRIBOCHEMISTRY BY GAS PHASE LUBRICATION
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EXPERIMENTAL MODELISATION OF ORGANOSULPHURS TRIBOCHEMISTRY BY GAS PHASE LUBRICATION

机译：气相润滑法对有机硫三化学的实验改性

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摘要

Organosulphurs compounds have been used for many years as Extreme Pressure (EP) and Anti Wear (AW) additives in a wide range of metal working applications. These additives act in severe conditions by building up a reaction film (tribofilm) on the metallic surfaces. Several interpretations have been proposed to explain the (EP) and the (AW) properties of these compounds, but the detailed mechanisms and surface reactions products are still largely unknown. To better understand the tribochemistry of these compounds, we developed a new device in our laboratory called "Environmentally Controlled Tribometer". This apparatus permits to study the interaction of one or several additives on different metallic surfaces using a gas having the same chemical function as the additive. After friction experiments, in-situ surface analyses (XPS and AES) were carried out on the tribofilm, to clearly identify the reactions products in order to understand the tribochemical mechanism. In this paper, we simulate the metal working lubrication of steel by the gas phase lubrication. The results show a clear difference in tribological behaviour and surface products between triboreactivity on nascent and oxidized surfaces. These observations gave us new information to better understand the tribochemical reactions of these additives. The comparison between the liquid phase lubrication and the gas phase lubrication results validates this methodology.
机译：有机硫化合物作为极压（EP）和抗磨（AW）添加剂已在许多金属加工应用中使用了很多年。这些添加剂在恶劣的条件下通过在金属表面形成反应膜（摩擦膜）起作用。已经提出了几种解释来解释这些化合物的（EP）和（AW）性质，但是详细的机理和表面反应产物仍然未知。为了更好地理解这些化合物的摩擦化学，我们在实验室中开发了一种名为“环境控制摩擦计”的新设备。该设备允许使用具有与添加剂相同的化学功能的气体来研究一种或几种添加剂在不同金属表面上的相互作用。经过摩擦实验后，对摩擦膜进行了原位表面分析（XPS和AES），以清楚地识别反应产物，从而了解摩擦化学机理。在本文中，我们通过气相润滑来模拟钢的金属加工润滑。结果表明，新生和氧化表面上的摩擦反应性之间在摩擦学行为和表面产物上存在明显差异。这些观察结果为我们提供了新的信息，以更好地了解这些添加剂的摩擦化学反应。液相润滑和气相润滑结果之间的比较验证了该方法。

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