Lubricants can significantly improve the anti-wear performance and prolong the service life of machines. It has been found that the introduction of additives can further enhance the performance of lubricating oil and meet harsh working conditions, such as high temperature, high speed, and high load. In this study, 1% by weight of CuO, WC, and WS₂ nanoparticles were added to Polyalphaolefins (PAO) base oil to evaluate tribological response. The study focused on using different surfactants including Oleic acid (OA) and Polyisobutylene succinimides (PIBS), to determine their impact of agglomeration and the observed tribological response in the boundary lubrication regime. The results showed that adding 10% OA while sonicating the particles for 30 min reduced the agglomeration the most, and adding 1% OA while sonicating for 120 min produced a more uniform dispersion of the nanoparticles used in this study. Friction studies showed that the nanoparticles additives do not appreciably impact the friction compared to base oil. Wear resistance was improved by about 60% for CuO and WC with 1% OA and sonicated for 120 min. The study suggests that conditions that minimize agglomeration and promote high dispersion lead to favorable wear resistance under boundary lubricant conditions.

润滑剂可以显着提高抗磨性能并延长机器的使用寿命。已经发现，添加剂的引入可以进一步提高润滑油的性能并满足苛刻的工作条件，例如高温，高速和高负荷。在这项研究中，以重量计1％的CuO，WC和WS ₂将纳米颗粒添加到聚α-烯烃（PAO）基础油中，以评估摩擦学响应。该研究的重点是使用不同的表面活性剂，包括油酸（OA）和聚异丁烯琥珀酰亚胺（PIBS），以确定它们的团聚影响以及在边界润滑方案中观察到的摩擦学响应。结果表明，在超声处理30分钟的同时添加10％OA可以最大程度地减少团聚，而在超声处理120分钟的同时添加1％OA可使本研究中使用的纳米颗粒更均匀地分散。摩擦研究表明，与基础油相比，纳米粒子添加剂不会显着影响摩擦。含1％OA的CuO和WC的耐磨性提高了约60％，并进行了120分钟的超声处理。