Abstract

The tribological tests of brass and steel are carried out on an in-situ tribometer. The Stribeck curve illustrates that the roughness and the wear rate as a whole reflect the lubrication regimes. Under boundary lubrication, a mathematical model based on positive pressure and roughness is established. A good agreement between the measurement and the prediction is found. According to the analysis of worn surface morphology, the main wear mechanism of brass is adhesive wear under boundary lubrication, which results in relatively high values of tribological parameters. The oxides strengthening layer is hardly generated under boundary lubrication until the experiment enters the mixed lubrication (ML) and the hydrodynamic lubrication (HL) regimes.

中文翻译：

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边界润滑条件下黄铜的磨损模型和黏着磨损机理的研究

摘要

黄铜和钢的摩擦学测试是在原位摩擦计上进行的。斯特里贝克曲线表明，粗糙度和磨损率总体上反映了润滑方式。在边界润滑下，建立了基于正压和粗糙度的数学模型。在测量值和预测值之间找到了很好的一致性。根据磨损表面形貌的分析，黄铜的主要磨损机理是边界润滑下的粘着磨损，这导致相对较高的摩擦学参数值。直到实验进入混合润滑（ML）和流体动力润滑（HL）方式，在边界润滑条件下几乎不会生成氧化物增强层。