This work exploits the use of different sintering manufacturing techniques for obtaining superior performances in lubricated point contacts. Disc and ball specimens were manufactures varying porosity and pore characteristics. The effect of surface pores in sintered materials was evaluated based on the frictional behaviour under different sliding-rolling conditions and lubrication regimes. Furthermore, lubricant film thicknesses were measured using interferometric technique. Test results showed that the decrease of porosity generally improves tribological performance. Low porosity surfaces can promote friction reduction compared to non-porous reference materials in specific configurations and operating with similar specific lubricant thickness values. This work contributes to an improved understanding of how randomly distributed micro-irregularities could change lubrication conditions, potentially increasing the efficiency of lubricated mechanical systems.

这项工作利用了不同的烧结制造技术来获得润滑点触点的卓越性能。圆盘和球形样品的制造商会改变孔隙率和孔隙特性。基于在不同的滑动条件和润滑方式下的摩擦性能，评估了烧结材料中表面孔隙的影响。此外，使用干涉技术测量润滑剂膜的厚度。测试结果表明，孔隙率的降低通常会改善摩擦学性能。与无孔参考材料相比，低孔隙率表面在特定配置下和以相似的特定润滑剂厚度值运行时，可以促进摩擦降低。