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Research Papers: Lubricants

Study on Tribological Properties of Antimony Nanoparticles as Liquid Paraffin Additive

[+] Author and Article Information
Jianlin Xu

State Key Laboratory of Advanced Processing
and Recycling of Non-ferrous Metals,
Lanzhou University of Technology,
Lanzhou 730050, China
e-mail: ggdjlxu@sina.com

Shuhua Yang

School of Material Science and Engineering,
University of Jinan,
Jinan 250022, China
e-mail: yangshuhua78@163.com

Lei Niu

State Key Laboratory of Advanced Processing
and Recycling of Non-ferrous Metals,
Lanzhou University of Technology,
Lanzhou 730050, China
e-mail: 88346397@qq.com

Xiaoqi Liu

State Key Laboratory of Advanced Processing
and Recycling of Non-ferrous Metals,
Lanzhou University of Technology,
Lanzhou 730050, China
e-mail: 1334702594@qq.com

Jinqiang Zhao

State Key Laboratory of Advanced Processing
and Recycling of Non-ferrous Metals,
Lanzhou University of Technology,
Lanzhou 730050, China
e-mail: 1435102985@qq.com

1Corresponding author.

Contributed by the Tribology Division of ASME for publication in the JOURNAL OF TRIBOLOGY. Manuscript received July 13, 2016; final manuscript received February 7, 2017; published online May 26, 2017. Assoc. Editor: Ning Ren.

J. Tribol 139(5), 051801 (May 26, 2017) (5 pages) Paper No: TRIB-16-1219; doi: 10.1115/1.4036172 History: Received July 13, 2016; Revised February 07, 2017

Antimony nanoparticles, whose surfaces were modified by alkyl phenol polyoxyethylene ether (OP-10), were used as one of the types of lubricating additives in liquid paraffin (LP). The tribological properties of antimony nanoparticles as lubricating additives were evaluated and compared with those of pure LP on a four-ball test machine. The morphology and chemical composition of the worn surface were investigated and analyzed by using scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). The results show that the additives can obviously improve the anti-wear and friction reducing properties of LP, which are better under high friction load. The double-layer crystal structure of antimony can be separated and glided along the cleavage plane by a friction-shear force and a normal load, respectively. The separating and gliding of antimony can form a physical adsorption film, which can separate the friction surface to avoid direct contact of the friction surface and play an important role in improving the anti-wear and friction reducing properties.

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References

Figures

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Fig. 1

TEM photographs of antimony

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Fig. 2

Effect of test duration on friction coefficient and wear scar diameter: (a) friction coefficient and (b) wear scar diameter

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Fig. 3

Effect of load on friction coefficient and wear scar diameter: (a) friction coefficient and (b) wear scar diameter

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Fig. 4

Micrograph of worn surfaces in experiment lubricating oil: (a) LP (196 N, 60 mins), (b) 0.1% Sb + LP (196 N, 60 mins), (c) 0.5% Sb + LP (196 N, 60 mins), (d) 1.0% Sb + LP (196 N, 60 mins), (e) LP (392 N, 60 mins), (f) 0.1% Sb + LP (392 N, 60 mins), (g) 0.5% Sb + LP (392 N, 60 mins), (h) 1.0% Sb + LP (392 N, 60 mins), (i) LP (392 N, 120 mins), (j) 0.1% Sb + LP (392 N, 120 mins), (k) 0.5% Sb + LP (392 N, 120 mins), and (l) 1.0% Sb + LP (392 N, 120 mins)

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Fig. 5

Crystal structure of antimony

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