Tribological Performance of Attapulgite Nano-fiber/Spherical Nano-Ni as Lubricant Additive

2014 ◽  
Vol 56 (3) ◽  
pp. 531-541 ◽  
Author(s):  
Feng Nan ◽  
Yi Xu ◽  
Binshi Xu ◽  
Fei Gao ◽  
Yixiong Wu ◽  
...  
Keyword(s):  
Lubricant Additive ◽  
Tribological Performance ◽  
Nano Fiber

scholarly journals Nano Serpentine Powders as Lubricant Additive: Tribological Behaviors and Self-Repairing Performance on Worn Surface

Nanomaterials ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 922 ◽  
Author(s):  
Binbin Wang ◽  
Zhaodong Zhong ◽  
Han Qiu ◽  
Dexin Chen ◽  
Wei Li ◽  
...  
Keyword(s):  
Dynamic Balance ◽  
Liquid Paraffin ◽  
Lubricant Additive ◽  
Tribological Performance ◽  
Wear Scar Diameter ◽  
Base Oil ◽  
Steel Balls ◽  
Worn Surface ◽  
Friction And Wear Characteristics

Natural serpentine powders are applicable as additives for various lubricating oils. However, no uniform theories explain their tribological performance, lubrication, and wear mechanism, especially their self-repairing mechanism. Herein, the influence of different nano serpentine powders (NSPs) contents in liquid paraffin on the friction and wear characteristics of steel balls and the self-repairing process of NSPs on the worn surface were studied. Results show that the optimal amount of NSPs was 0.5 wt %. Relative to those of the base oil, the friction coefficients and wear spot diameters were reduced by 22.8% and 34.2%, respectively. Moreover, the long-term tribological test shows that the wear scar diameter decreased slightly after 3 h, reaching the state of dynamic balance between wear and repair. The outstanding tribological performance should be attributed to the formed bilayer tribofilm, the first layer of which contains nanoparticles surrounded by lubricants and the second layer of which contains nanoparticles compacted onto the surface of the steel ball.

Study of the tribological performance of a rare earth naphthenate as a lubricant additive

2004 ◽  
Vol 17 (1) ◽  
pp. 105-113 ◽  
Author(s):  
R. D. Liu ◽  
D. H. Tao ◽  
J. H. Zhang ◽  
W. G. Cao ◽  
S. F. Fu
Keyword(s):  
Rare Earth ◽  
Lubricant Additive ◽  
Tribological Performance

Tribological properties of graphene oxide sheets as water-based lubricant additive

2018 ◽  
Vol 70 (6) ◽  
pp. 1025-1036 ◽  
Author(s):  
Gangqiang Zhang ◽  
Xiangqiong Zeng ◽  
Tianhui Ren ◽  
Emile van der Heide
Keyword(s):  
Graphene Oxide ◽  
Normal Load ◽  
Lubricant Additive ◽  
Tribological Performance ◽  
Content Type ◽  
Angle Measurements ◽  
Water Based ◽  
Stainless Steel Ball ◽  
Microstructure Morphology ◽  
Experimental Findings

Purpose The purpose of this paper is to investigate the tribological performance of graphene oxide (GO) sheets as water-based lubricant additive when ultra-high molecular weight polyethylene (UHMWPE) plates slid against 316L stainless steel ball using a reciprocating tribometre. Design/methodology/approach The factors influencing the tribological performance were considered, including the viscosity of the GO dispersion, normal load, sliding velocity and the roughness of UHMWPE. The surface microstructure and properties of UHMWPE were studied by means of scanning electron microscopy, laser confocal microscopy, Raman spectroscopy and contact angle measurements. Findings The results revealed that the GO dispersion reduced friction and sliding-wear. The surface images of the wear UHMWPE plates indicated that GO sheets were prone to adsorption on the surface and form a thin physical tribofilms at the substrate. Originality/value Based on the experimental findings for the evolution of the microstructure morphology and the development of subsurface cracks, less debris and cracking can be observed in the UHMWPE plates lubricated by GO dispersion.

Tribological Property of Biocarbon-Based Magnesium Silicate Hydroxide Nanocomposite as Lubricant Additive at Different Concentrations of Additive and Dispersant

2020 ◽  
Vol 143 (7) ◽  
Author(s):  
Rongqin Gao ◽  
Wenbo Liu ◽  
Qiuying Chang ◽  
Hao Zhang ◽  
Yang Liu
Keyword(s):  
Electron Microscope ◽  
Friction And Wear ◽  
Magnesium Silicate ◽  
Lubricant Additive ◽  
Tribological Performance ◽  
Third Body ◽  
Wear Performance ◽  
Optimal Value ◽  
Friction Surfaces ◽  
Scanning Electron

Abstract The tribological performance of biocarbon-based magnesium silicate hydroxide nanocomposite was examined as a lubricant additive by using a four-ball friction and wear tester. The effect of different concentrations of additives and dispersants was evaluated. The results show the nanocomposite exhibits excellent anti-wear performance and the optimal value is proposed when the content of additive and dispersant is 0.7 wt% and 3 wt% respectively. Through analyzing the friction surfaces by scanning electron microscope and Raman, we proposed the additives acted by a combination of “bearing,” “third body,” and sliding effect to achieve outstanding tribological properties.

Tribological performance of electrostatic self-assembly prepared ZrO2@GO nanocomposites using as lubricant additive

2019 ◽  
Vol 6 (11) ◽  
pp. 115075
Author(s):  
Shaofeng Zhou ◽  
Haoran Liu ◽  
Shuzhan Wang ◽  
Lin Gan ◽  
Jin Huang ◽  
...  
Keyword(s):  
Self Assembly ◽  
Lubricant Additive ◽  
Tribological Performance

scholarly journals Modified graphene as novel lubricating additive with high dispersion stability in oil

Friction ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 143-154 ◽  
Author(s):  
Pu Wu ◽  
Xinchun Chen ◽  
Chenhui Zhang ◽  
Jiping Zhang ◽  
Jianbin Luo ◽  
...  
Keyword(s):  
Friction And Wear ◽  
Wear Track ◽  
Normal Load ◽  
Lubricant Additive ◽  
Tribological Performance ◽  
Dispersion Stability ◽  
High Dispersion ◽  
Base Oil ◽  
The Coefficient Of Friction ◽  
Modified Graphene

Abstract Graphene is a promising material as a lubricant additive for reducing friction and wear. Here, a dispersing method which combines chemical modification of graphene by octadecylamine and dicyclohexylcarbodiimide with a kind of effective dispersant has been successfully developed to achieve the remarkable dispersion stability of graphene in base oil. The stable dispersion time of modified graphene (0.5 wt%) with dispersant (1 wt%) in PAO-6 could be up to about 120 days, which was the longest time reported so far. At the same time, the lubricant exhibits a significant improvement of tribological performance for a steel ball to plate tribo-system with a normal load of 2 N. The coefficient of friction between sliding surfaces was ~0.10 and the depth of wear track on plate was ~21 nm, which decreased by about 44% and 90% when compared to pure PAO-6, respectively. Furthermore, the analysis of the lubricating mechanisms in regard to the sliding-induced formation of nanostructured tribo-film has been contacted by using Raman spectra and TEM.

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