The present work investigates zinc oxide nanorods' tribological behavior as an additive in the SAE (20W-40) engine oil. The zinc oxide nanorods were synthesized using the chemical method and characterized using XRD and SEM. The friction and wear characteristics were studied for the samples with varying zinc oxide concentrations (0.01%–0.05%) using a Four-ball tribotester. The results reveal a reduction of up to 88% (87.4559%) and 47% (46.0532%) in the wear scar area (WSA) and wear scar diameter (WSD) for the samples with 0.02% zinc oxide nanorods in comparison with the base oil without the additive.

中文翻译：

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悬浮在SAE 20w 40机油中的ZnO纳米棒的摩擦学行为研究

本工作研究了氧化锌纳米棒在SAE（20W-40）发动机油中作为添加剂的摩擦学行为。采用化学方法合成了氧化锌纳米棒，并利用XRD和SEM对其进行了表征。使用四球三botester研究了氧化锌浓度（0.01％–0.05％）变化的样品的摩擦磨损特性。结果显示，与基础相比，具有0.02％氧化锌纳米棒的样品的磨损痕迹面积（WSA）和磨损痕迹直径（WSD）分别降低了88％（87.4559％）和47％（46.0532％）。不含添加剂的机油。