|
| 摘要: |
| 在球盘式与环块式摩擦磨损试验机上考察了有机物修饰的纳米铜颗粒作为50CC润滑油添加剂的摩擦磨损性能,采用SEM和EDS分析了磨损表面形貌和表面膜元素组成及含量。结果表明:采用有机物修饰的纳米铜颗粒作为添加剂在润滑油中存在一个最佳的添加量,在此浓度下的润滑油在不同载荷条件下都具有良好的抗磨减摩性能,纳米铜粒子的加入还在一定程度上提高了油品的承载能力,降低了摩擦热。综合分析认为,纳米铜颗粒的摩擦学作用机制是在摩擦接触区高温高压的作用下形成低剪切强度的铜保护膜。 |
| 关键词: 抗磨减摩 润滑油添加剂 纳米铜 承载能力 |
| DOI： |
| 分类号: |
| 基金项目:国家自然科学基金重点项目(50235030)和总装"十五"维修技术预先研究项目共同资助. |
|
| Tribological Behavior of Nano-Cu Particles as Additive in 50CC Lubricating Oil |
|
YU He-long1，XU Yi1，LIU Qian1，SHI Pei-jing1，XU Bin-shi2
|
| Abstract: |
| The anti-wear and friction reducing performance of nano-Cu particles as lubricating oil additive was evaluated on ball on disc and ring on block testers. The worn surface morphology and composition of surface film were analyzed by means of scanning electron microscope (SEM) and energy dispersive spectroscope（EDS）. The results indicated that there exists an optimal content of nano-Cu particles in oil, at witch the anti-wear and load-carrying capacities of the oil with nano-Cu particles are improved, and the friction coefficient and frictional heat are decreased. The mechanism can be explained by a boundary lubrication film composed of Cu, which has a low shearing strength, formed under the high temperature and pressure during the friction process. |
| Key words: anti-wear and friction reducing lubricating oil additive nano-Cu load-carrying ability |
