Influence of Few-Layer Graphene on Frictional Properties of Lithium Compound Grease
Source abstract
Abstract
The frictional properties of lithium compound grease (LCG) with different percentage compositions of few-layer graphene (FLG) were investigated, and the mechanisms of temperature and loading effects on LCG containing FLG are also considered. The concluding effect shows that 1 wt% FLG is more appropriate for friction and wear modifiers for lithium compound grease at elevated temperatures and less suitable at ordinary temperatures. Thickener chemisorption film, FLG layering film, and tribo-reaction film consisting of FeO(OH), Fe2O3, Fe3O4, Li2O, and other oxides assist in the establishment of a lubricating boundary film on the friction interfaces lubricated with LCG containing FLG. The poor fluidity of lithium compound grease at low temperatures leads to poor dispersion of FLG, decreasing friction reduction capability. Under elevated temperature and low load condition, adding 1wt% FLG to LCG can only improve its wear-resistant property, the abrasion volume of steel plate reduced by 24.49%. Under elevated temperature and high load condition, adding 1wt% FLG to LCG can only enhance its anti-friction characteristics. Conversely, FLG is unsuitable as an anti-friction and wear-resistant additive for LCG at low-temperature conditions.
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Research context
OpenAlex topics: Lubricants and Their Additives · Tribology and Wear Analysis · Gear and Bearing Dynamics Analysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Mechanical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
Shandong Institute of Mechanical Design and Research, Jinan 250031, China
Funding
National Natural Science Foundation of China · Shandong Provincial Key Research and Development Program (Major Science and Technology Innovation Project)
References (38)
Show source-provided references
1. Exploration of Talc nanoparticles to enhance the performance of Lithium grease10.1016/j.triboint.2021.107107 ↗
2. Performance properties of lithium greases with PTFE particles as additive: Controlling parameter- size or shape?10.1016/j.triboint.2020.106302 ↗
3. Tribological properties of nanometer cerium oxide as additives in lithium grease10.1016/j.jre.2017.09.004 ↗
4. Effects of CuO nanoparticles on friction and vibration behaviors of grease on rolling bearing10.1016/j.triboint.2020.106552 ↗
5. Investigation of friction and vibration performance of lithium complex grease containing nano-particles on rolling bearing10.1016/j.triboint.2020.106761 ↗
6. Investigation of mixed hBN/Al2O3 nanoparticles as additives on grease performance in rolling bearing under limited lubricant supply10.1016/j.colsurfa.2022.130811 ↗
7. Tribological properties of chemical composite and physical mixture of ZnO and SiO2 nanoparticles as grease additives10.1016/j.apsusc.2022.155932 ↗
8. Tribological characteristics of bisphenol AF bis(diphenyl phosphate) as an antiwear additive in polyalkylene glycol and polyurea grease for signifcantly improved lubrication10.1016/j.apsusc.2015.12.008 ↗
9. Graphene: A new emerging lubricant10.1016/j.mattod.2013.12.003 ↗
10. Synthesis of titanium complex grease and effects of graphene on its tribological properties10.1016/j.triboint.2019.06.008 ↗
11. Improving the lubricity of a bio-lubricating grease with the multilayer graphene additive10.1016/j.triboint.2020.106386 ↗
12. Graphene based silicone thermal greases10.1016/j.physleta.2013.10.017 ↗
13. An investigation on the tribological behaviors of steel/copper and steel/steel friction pairs via lubrication with a graphene additive10.1007/s40544-019-0327-x ↗
14. Friction-induced nano-structural evolution of graphene as a lubrication additive10.1016/j.apsusc.2017.10.119 ↗
15. Experimental research on tribological properties of liquid phase exfoliated graphene as an additive in SAE 10W-30 lubricating oil10.1016/j.triboint.2019.02.030 ↗
16. Investigation of the tribology behaviour of the graphene nanosheets as oil additives on textured alloy cast iron surface10.1016/j.apsusc.2016.06.080 ↗
17. Tribological characteristics of graphene as grease additive under different contact forms10.1016/j.triboint.2018.06.026 ↗
18. Study on friction performance of graphene-based semi-solid grease10.1016/j.cclet.2014.03.010 ↗
19. Preparation of graphite nanosheets in different solvents by sand milling and their enhancement on tribological properties of lithium-based grease10.1016/j.cjche.2020.01.013 ↗
20. Coupling hybrid of graphene oxide and layered zirconium phosphonate to enhance phenolic resin-based friction materials10.1002/app.46543 ↗
21. Tribological performance of trimethylolpropane ester bio-lubricant enhanced by graphene oxide nanoparticles and oleic acid as a surfactant10.1016/j.triboint.2023.108398 ↗
22. 3D hierarchical porous graphene nanosheets as an efficient grease additive to reduce wear and friction under heavy-load conditions10.1016/j.triboint.2019.106118 ↗
23. Effect of g-C3N4 morphology on its performance as lubricating additive for grease
24. Bai, T., and Geng, F. (2018, January 9–11). Investigate on the tribological properties of additives in tetra polyurea grease. Proceedings of the 2018 First International Conference on Environment Prevention and Pollution Control Technology (EPPCT 2018), Tokyo, Japan.
25. In situ synthesis of Mn3O4/graphene nanocomposite and its application as a lubrication additive at high temperatures10.1016/j.apsusc.2021.149019 ↗
26. Synthesis of hollow fullerene-like molybdenum disulfide/reduced graphene oxide nanocomposites with excellent lubricating properties10.1016/j.carbon.2018.04.021 ↗
27. Effect of few layer graphene additive on the tribological properties of lithium grease10.1002/ls.1506 ↗
28. Ultrasound-assisted Li+/Na+ co-intercalated exfoliation of graphite into few-layer graphene10.1016/j.ultsonch.2020.105108 ↗
29. Fretting tribological behaviors of steel wires under lubricating grease with compound additives of graphene and graphite
30. Tribological characterization and rheology of hybrid calcium grease with graphene nanosheets and multi-walled carbon nanotubes as additives10.1016/j.jmrt.2020.04.020 ↗
31. (2003). Rolling Bearings—Steel Balls (Standard No. GB/T308-2002).
32. Isothermal Elastohydroynamic Lubrication of Point contacts: Part VI—Starvation Results10.1115/1.3452973 ↗
33. Effect of van der Waals Forces on the Buckling Strength of Graphene10.1166/jctn.2013.3260 ↗
34. Preparation of Few-Layer Porous Graphene by a Soft Mechanical Method with a Short Rolling Transfer Process10.1002/cplu.202000602 ↗
35. Preparation, characterization, and tribological properties of silica-nanoparticle-reinforced B-N-co-doped reduced graphene oxide as a multifunctional additive for enhanced lubrication10.1007/s40544-019-0331-1 ↗
36. Synthesis of thermally reduced graphite oxide in sulfuric acid and its application as an efficient lubrication additive10.1016/j.triboint.2017.06.023 ↗
37. Wear mechanism of fexspline materials regulated by novel amorphous/crystalline oxide form evolution at frictional interface10.1016/j.triboint.2019.03.023 ↗
38. Chemically functionalized graphene for lubricant applications: Microscopic and spectroscopic studies of contact interfaces to probe the role of graphene for enhanced tribo-performance10.1016/j.jcis.2017.11.072 ↗