摘要
将4种分别含有微米或纳米固体粒子的磨合油应用在45号钢齿轮副磨合试验中，研究这2类粒子对齿轮磨合的影响及行为．研究中使用的2种微米粒子分别是平均粒径为10μm的碳酸钙和100μm的石英砂，2种纳米粒子分别是平均粒径为5nm的金刚石和30nm的导电炭黑，大齿轮和小齿轮未磨合前的齿面三维粗糙度分别是24．00μm和32．97μm．试验结果表明：微米粒子对磨合磨损的主要影响表现为磨粒磨损，且微粒的粒径越大，磨粒磨损越剧烈；纳米粒子对磨合磨损影响不大，但纳米粒子能够吸附、填充和渗入齿面，从而改观齿面形貌和改善齿面摩擦学性能．另外，在含有这2类粒子的磨合磨损中，摩擦副间都有不同程度的“负电阻”现象发生，且两齿轮的磨损率蒡越大，该电现象越明显．
Four kinds of oils with nano or micro-additives were respectively applied to gear pairs made of 45# steel to investigate the two kinds of particle＇s influence on the running-in and behavior of the gear pairs. The used two kinds of micro particles are calcium carbonate and quartz whose mean granularities are about 10 and 100μm respectively while the two nano ones are diamond and conductor char with about 5 and 30 nm mean granularities respectively. The 3D surface roughness of the pinion and wheel before running-in are 32.97 and 24.00μm. The tribological behaviors of micro particles in the running-in of steel gear pairs showed that abrasive wear is dominant, and the larger granularity, the severer running-in wear. The tribological behaviors of nano particles in running-in of steel gear pairs indicated that they had no effect on wear, but influenced the running-in surface topography and changed its properties by adsorbing, filling and filtering into gear surface. Moreover, it was observed that ＂negative electric resistances＂ between the pairs also existed during the two kinds of running-in, and the larger wear ratio difference of the two gears, the more prominent the electric phenomena.
出处
《工程设计学报》
CSCD
北大核心
2007年第4期342-346,共5页
Chinese Journal of Engineering Design
基金
Theresearch is financially supported by Fund Project of Guangdong(2003C102031)
