材料科学
润滑油
润滑油
基础油
摩擦学
二氧化钛
纳米-
扫描电子显微镜
石墨烯
拉曼光谱
复合材料
液体石蜡
干润滑剂
冶金
化学工程
纳米技术
物理
工程类
光学
作者
Jankhan Patel,Amirkianoosh Kiani
出处
期刊:Applied sciences
[Multidisciplinary Digital Publishing Institute]
日期:2019-04-19
卷期号:9 (8): 1629-1629
被引量:19
摘要
In this study, the tribological behavior of both liquid (oil) and semi-liquid (grease) lubricants enhanced by multilayer graphene nano platelets and titanium dioxide nano powder was evaluated using ball-on-disk and shaft-on-plate tribo-meters. Oil samples for both 2D graphene nano platelets (GNP) and titanium nanopowders (TiNP) were prepared at three concentrations of 0.01 %w/w, 0.05 %w/w and 0.1 %w/w. In addition, 0.05% w/w mixtures of GNP and TiNP were prepared with three different ratios to analyze collective effects of both nano additives on friction and wear properties. For semi-liquid lubricants, 0.5% w/w concentrations were prepared for both nano additives for shaft-on-plate tests. Viscosity and oxidation stability tests were conducted on the liquid-base lubricants. Nano powders of both additive and substrate were analyzed using transmission electron microscopy (TEM) and scanning electron microscopy (SEM). In addition, Raman spectroscopy was conducted to characterize the graphene and titanium dioxide. The study shows that adding graphene and titanium dioxide individually sacrifices either the wear or friction of lubricants. However, use of both additives together can enhance friction resistance and wear preventive properties of a liquid lubricant significantly. For a semi-liquid lubricant, the use of both additives together and individually reduces friction compared to base grease.
科研通智能强力驱动
Strongly Powered by AbleSci AI