Ricinoleate anion based ionic liquids (ILs) were synthesized from four different nitrogen containing cationic counterparts such as tetrabutylammonium, tetrapropylammonium, cetyltrimethylammonium, imidazolium. Tribological performance of synthesized ILs were evaluated using four ball tribo tester by blending with two lubricant base oils namely epoxy2-ethylhexyl esters of karanja fatty acids (EKE) and dioctyl sebacate (DOS). Antiwear behaviour was explored by varying different factors including concentration, applied load and rotation speed. It was found that the synthesized ILs in base oil significantly reduced the wear scar diameter by 17–25% at 0.8 wt% and a remarkable reduction in wear scar diameter was observed for all the tested applied load (40 to 80 kg) and rotation speed (1200 to 1742 rpm). Further, the load carrying capacity of base oil was improved by 25–43% at 1.25 wt% of IL dosage. The imidazolium cation containing IL outperform tribological performance among all the ILs being studied. The morphology of worn surface after the wear tests and deposition of elementals on the worn surface lubricated with neat base oil and IL blended base oil was studied by scanning electron microscope (SEM) and energy-dispersive X-ray spectroscopy (EDX).

由四种不同的含氮阳离子对应物（如四丁基铵，四丙基铵，十六烷基三甲基铵，咪唑鎓）合成了基于蓖麻油酸酯阴离子的离子液体（ILs）。合成的ILs的摩擦学性能是使用四球摩擦测试仪通过与两种润滑油基础油（即，karanja脂肪酸的环氧2-乙基己酯（EKE）和癸二酸二辛酯（DOS））混合来评估的。通过改变不同的因素（包括浓度，施加的载荷和转速）来探索抗磨性能。发现在0.8 wt％的基础油中合成的ILs可使磨损痕迹直径显着减小了17–25％，并且在所有测试的施加负载（40至80 kg）和转速下均观察到磨损痕迹直径的显着减小。 （1200至1742 rpm）。进一步，在IL用量为1.25 wt％的情况下，基础油的承载能力提高了25–43％。在所有正在研究的IL中，含IL的咪唑鎓阳离子的摩擦性能优于其他IL。通过扫描电子显微镜（SEM）和能量色散X射线光谱（EDX）研究了磨损测试后的磨损表面形态，以及在纯净基础油和IL混合基础油润滑下的磨损表面上沉积的元素。