Constructing a novel and high-performance liquid nanoparticle additive from a Ga-based liquid metal | |
Department | 固体润滑国家重点实验室 |
Guo J(郭杰)1,2; Cheng J(程军)1,2; Tan H(谈辉)1,2; Sun QC(孙奇春)1,2; Yang J(杨军)1,2; Liu WM(刘维民)1,2,3 | |
The second department | 高温摩擦学课题组 |
2020-04-01 | |
Source Publication | Nanoscale |
Volume | 12Issue:16Pages:9208-9218 |
Abstract | The development of a high-performance nanoparticle (NP) additive for lubricating oil is a research hotspot for the tribology and engineering areas. In this study, the concept of a novel liquid nano-additive has been proposed based on the emergence of Ga-based liquid metals (GLMs), which display excellent extreme-pressure and high-temperature lubricity. Herein, the liquid NPs (designated as GLM-NP/C12) were prepared from a GLM droplet through the ultrasonic method, modified with 1-dodecanethiol, and are mainly distributed at 286 +/- 21 nm. They have a core-shell structure with liquid-state GLM on the inside, and gallium oxide and a self-assembled alkylthiolate monolayer on the outside. In terms of the tribological performance, GLM-NP/C12s have awonderful dispersion-stability in PAO10 oil, and provide excellent anti-adhesion, friction-reducing, and wear-resistance properties. When the additiveconcentration was 0.17 wt% in PAO10, the friction coefficient was reduced by 39% and the wear rate was reduced by 93% compared to those lubricated by the neat PAO10. This kind of liquid nano-additive has the advantages of easy preparation, internal composition regulation and recyclability, compared to conventional solid NPs. In addition, the liquid NPs were readily introduced into the frictional interfaces. More generally, the optimal additive concentration of the liquid NPs was much lower than that of the solid NPs. This observation has important implications for understanding the differences of the lubrication mechanisms between the solid and liquid nano-additives, and may provide a new design method and strategy of nano-additives for lubricating oil. |
MOST Discipline Catalogue | 理学 ; 理学::化学 |
DOI | 10.1039/c9nr10621a |
Indexed By | SCI |
If | 6.895 |
compositor | 第一作者单位 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/26414 |
Collection | 固体润滑国家重点实验室(LSL) |
Corresponding Author | Cheng J(程军); Yang J(杨军) |
Affiliation | 1.中国科学院兰州化学物理研究所,固体润滑国家重点实验室 2.中国科学院大学,材料科学与光电工程中心 3.西北工业大学,材料学院 |
Corresponding Author Affilication | Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences |
Recommended Citation GB/T 7714 | Guo J,Cheng J,Tan H,et al. Constructing a novel and high-performance liquid nanoparticle additive from a Ga-based liquid metal[J]. Nanoscale,2020,12(16):9208-9218. |
APA | Guo J,Cheng J,Tan H,Sun QC,Yang J,&Liu WM.(2020).Constructing a novel and high-performance liquid nanoparticle additive from a Ga-based liquid metal.Nanoscale,12(16),9208-9218. |
MLA | Guo J,et al."Constructing a novel and high-performance liquid nanoparticle additive from a Ga-based liquid metal".Nanoscale 12.16(2020):9208-9218. |
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