选用合成极压蜗杆油、未加油性剂和极压剂的半成品蜗杆油作为基础试验油 ,将超微金刚石粉、纳米铁粒子和纳米铜粒子分别以两种不同质量比分散到半成品蜗杆油中。在 MM-2 0 0型磨损实验机上 ,考察纳米粒子的抗磨减摩性 ,并与传统的油性剂、极压剂进行比较。同时探索应用于钢 /钢副硬齿面的新型抗磨减摩添加剂。试验结果发现 :平均粒径尺寸为 5 nm的超微金刚石粉具有优于传统油性剂、极压剂的抗磨减摩性能 ,可以大大降低钢 /钢副的摩擦 ,减小磨损。但钢 /钢副中不宜使用含有纳米铁粒子的润滑油。 The semi-finished worm oil with synthetic extreme pressure worm oil, non-oily agent and extreme pressure agent was used as the basic test oil to disperse the ultrafine diamond powder, nano-iron particles and nano-copper particles into semi-finished worm oil at two different mass ratios . On the MM-200 wear tester, the anti-wear and anti-friction properties of nano-particles were investigated and compared with the traditional oily and extreme pressure agents. At the same time explore the application of steel / steel hard tooth surface of the new anti-wear anti-friction additives. The results show that the ultrafine diamond powder with the average particle size of 5 nm has the better antiwear and antifriction properties than the traditional oily and extreme pressure agents, which can greatly reduce the friction between steel and steel and reduce the wear. However, it is not advisable to use lubricants containing nano-iron particles in the steel / steel pair.