纳米金刚石对内燃机缸套─活塞环摩擦学改性研究

Study on the tribological Modification of Cylinder - Piston Ring Based on the Diamond Nanopowder

纳米级金刚石是应用爆炸法人工合成的具有实用价值的纳米材料,它具有一系列特殊的物理和化学特性。本文针对车用内然机缸套-活塞环摩擦副磨合期内的工作特点,利用金刚石的特殊性能,对其进行摩擦学改性研究。通过内燃机的磨合与摩擦学改性的有机统一,来实现控制缸套-活塞环的摩擦学行为,延长其使用寿命的目的。

The Diamond nanopowder ( DNP) synthesized by the detonadon of explosives with negative oxygen balance are nanomale-rials with practical value. They have a series of special physical and chemical propertieso Focus on the characteristics of the friction pair of cylinder - piston ring of engine during running - in, the study on the tribological modification of the frictin pair was conducted by making use of special physical and chemical properties of DNP. Combining the running - in of engine with tribological modification of DNP to control the tribological behaviors of cylinder - piston ring and prolong the working hie.