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Tribological Behaviour of Steel-Alumina Sliding Pairs under Boundary Lubrication Conditions

机译：钢-氧化铝滑动副在边界润滑条件下的摩擦学行为

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摘要

The tribological behaviour of oil-lubricated steel-alumina sliding pairs was investigated using a ball-on-disc tribometer at room temperature. Commercial bearing balls of 10 mm diameter were mated to 99.7% Al_2O_3 discs, and additive-free mineral oil was fed into the contact area. The sliding speed and the applied normal load were varied, and the initial surface roughness of the Al_2O_3 disc was altered using different polishing and grinding procedures. The results showed that the surface roughness of the ceramic discs dominated the tribological behaviour under the given experimental conditions. The sliding speed as well as the normal load showed less effect on the friction behaviour, hut the amount of wear depended strongly on the normal load. From the results it was concluded that improvement of the surface roughness and optimised surface machining of the ceramic material can be essential for improving the tribological performance for boundary-lubricated steel-ceramic sliding pairs.
机译：使用圆盘球式摩擦计在室温下研究了油润滑的钢-氧化铝滑动副的摩擦学行为。将直径为10 mm的商用轴承球与99.7％的Al_2O_3圆盘配合，然后将无添加剂的矿物油送入接触区域。改变了滑动速度和施加的法向载荷，并使用不同的抛光和磨削程序改变了Al_2O_3圆盘的初始表面粗糙度。结果表明，在给定的实验条件下，陶瓷圆盘的表面粗糙度主导了摩擦学行为。滑动速度和正常载荷对摩擦性能的影响较小，但磨损量很大程度上取决于正常载荷。从结果得出结论，改善表面粗糙度和优化陶瓷材料的表面加工对于改善边界润滑的钢-陶瓷滑动副的摩擦性能至关重要。

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