润滑油
材料科学
纳米复合材料
二氧化钛
润滑油
纳米流体
摩擦学
化学工程
纳米颗粒
复合材料
流变学
基础油
扫描电子显微镜
纳米技术
工程类
作者
Bahaa M. Kamel,Enas l. Arafa,Alaa Mohamed
标识
DOI:10.1080/01932691.2022.2122491
摘要
The tribological and rheological properties of hybridized nanocomposite of graphene nanosheets (GNs)/titanium dioxide (TiO2) nanoparticles (NPs) as grease additives were investigated under different concentrations (0.5, 1, 2, and 3 wt.%), different loads, and different temperature. Friction reduction and anti-wear of grease having hybridized nanocomposite were measured by using a pin-on-disk tester. The rheological properties and the thermal conductivity of the modified grease were evaluated using a Brookfield rheometer and KD2 thermal analyzer. The morphology and composition of nano additives and nano grease were analyzed by HRTEM and XRD. The results show that the hybridized nano grease has better friction-reduction and anti-wear which are enhanced by about 46.7 and 43.9%, respectively, if compared to the base grease. The rheological behavior of the hybrid nano grease is generally enhanced with an increase in the concentration. On the other hand, thermal conductivity is directly proportional to an increase in the concentration of hybrid nanoparticles.
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