纳米添加剂对GCr15/1045钢摩擦磨损性能的影响

Effect of Nano-additive on Friction and Wear Performance of GCr15/1045 Steels

随着纳米科技的发展和对纳米材料功能特殊性的认识,纳米材料作为添加剂开始越来越多的应用到机械的润滑和抗磨自修复研究中。文中利用PLINT NENE-7型磨损试验机,以中石油兰州润滑油厂生产的中负荷工业闭式齿轮油L-CKC220作为基础油研究了纳米氮化铝、纳米碳化硅和油溶性纳米铜合金作为添加剂对GCr15/1045钢摩擦副滑动摩擦磨损特性的影响。分析不同纳米材料对摩擦因数曲线、磨斑形貌(SEM)及EDX能谱分析图的影响。结果表明:3种纳米添加剂均能使摩擦副的摩擦因数明显降低;纳米氮化铝和油溶性纳米铜合金作为添加剂具有良好的减摩和抗磨性能,分别使摩擦系数降低33.3%和28.6%,并能非常明显的沉积在摩擦副表面;纳米碳化硅的性能较差。

With the development of nanotechnology and the increasing knowledge of the particularity of nano-composite materials, more and more nanomaterials, which are used as additives, are applied to study the lubrication, anti-wear and self-healing of machines. The sliding friction and wear performance of nano-aluminum nitride, oil-soluble nano-copper alloy and nano-silicon carbide were studied, which were used as additives in the base oil. The medium duty industrial gear oil L-CKC220 from the Lanzhou Lubricating Oil Plant of PetroChina was chose as the base oil. The experiment was tested on the PLINT Deltalab-NENE-7 horizontal electro-hydraulic servo budge abrasion tester with GCr15/1045 steel pair. The effects of different nanomaterials were analyzed. By analyzing friction coefficient curves, worn morphology and EDX, the results show that all of the three nano-additives can reduce friction coefficient obviously, however, nano-alu- minum nitride and oil soluble nano-copper alloy give a better performance as additives in friction and anti-wear, reducing the friction coefficient 33.3% and 28.6% respectively, and these two materials deposite on the surface of friction pairs ohviously. But the properties of nano-silicon carbide are worse than them.