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Research Papers: Micro-Nano Tribology

Preparation and Tribological Properties of Modified Field’s Alloy Nanoparticles as Additives in Liquid Poly-alfa-olefin Solution

[+] Author and Article Information
Chaoming Wang

Applied Mechanics and Structure Safety Key
Laboratory of Sichuan Province,
School of Mechanics and Engineering;
Key Laboratory for Advanced
Technologies of Materials,
Ministry of Education, School of Materials Science and Engineering,
Southwest Jiaotong University,
Chengdu, Sichuan 610031, China
e-mail: hbdxwcm@hotmail.com

Xinran Zhang

Applied Mechanics and Structure Safety Key
Laboratory of Sichuan Province,
School of Mechanics and Engineering,
Southwest Jiaotong University,
Chengdu, Sichuan 610031, China
e-mail: 979211529@qq.com

Wenbing Jia

Key Laboratory for Advanced Technologies of Materials,
Ministry of Education, School of Materials Science and Engineering,
Southwest Jiaotong University,
Chengdu, Sichuan 610031, China
e-mail: 1098548594@qq.com

Qiaoyuan Deng

Key Laboratory for Advanced Technologies of Materials,
Ministry of Education, School of Materials Science and Engineering,
Southwest Jiaotong University,
Chengdu, Sichuan 610031, China
e-mail: 254664053@qq.com

Yongxiang Leng

Key Laboratory for Advanced Technologies of Materials,
Ministry of Education, School of Materials Science and Engineering,
Southwest Jiaotong University,
Chengdu, Sichuan 610031, China
e-mail: yxleng@263.net

1Corresponding author.

Contributed by the Tribology Division of ASME for publication in the Journal of Tribology. Manuscript received December 5, 2018; final manuscript received January 22, 2019; published online March 4, 2019. Assoc. Editor: Min Zou.

J. Tribol 141(5), 052001 (Mar 04, 2019) (5 pages) Paper No: TRIB-18-1504; doi: 10.1115/1.4042768 History: Received December 05, 2018; Accepted January 22, 2019

This study described the synthesis and the tribological properties of surface-modified Field’s alloy nanoparticles, which were prepared by a facile one-step nanoemulsion method and using ethyl carbamate as a surfactant, as additives in liquid poly-alfa-olefin (PAO) oil. The size and morphology of nanoparticles were investigated by transmission electron microscopy (TEM). The zeta potential, viscosity, and stability properties of the surface-modified nanoparticles suspended in PAO oil (called nanofluid) with different mass concentrations were measured by a viscometer and Zeta potential analyzer, respectively. The tribological properties of the nanofluid were tested by a ball to disk wear and friction machine. Compared with pure PAO oil, the results showed that the nanofluids had better lubricating behaviors. When the mass concentration of modified nanoparticles was 0.08 wt. %, both the friction coefficient and the wear scar diameter were the lowest.

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Figures

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Fig. 1

TEM image of the as-prepared ethyl carbamate modified Field’s alloy nanoparticles

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Fig. 2

Optical photographs of pure PAO oil and nanofluids of Field’s alloy nanoparticles in PAO oil with different mass concentrations 0.02 wt. %, 0.04 wt. %, 0.06 wt. %, 0.08 wt. %, and 0.1 wt. %, respectively

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Fig. 3

Zeta potential of ethyl carbamate modified Field’s alloy nanoparticles in PAO oil (a) and FT-IR spectra of ethyl carbamate and ethyl carbamate modified Field’s alloy nanoparticles (b)

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Fig. 4

The viscosity of nanofluids with different mass concentrations (0, 0.02 wt. %, 0.04 wt. %, 0.06 wt. %, 0.08 wt. %, and 0.1 wt. %) of ethyl carbamate modified Field’s alloy nanoparticles in PAO at room temperature (∼22 °C)

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Fig. 5

Ball to disk friction coefficient curves of modified Field’s alloy nanofluids with different mass concentrations (pure PAO oil, 0.02 wt. %, 0.04 wt. %, 0.06 wt. %, 0.08 wt. %, and 0.1 wt. %) in PAO oil with time (a); extracted friction coefficient versus the mass concentration of modified Field’s alloy nanoparticles in PAO oil (b)

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Fig. 6

Profilometer data when using pure PAO oil (a) and nanofluid (b) with mass concentrations of modified Field’s alloy nanoparticle at 0.08 wt. % in PAO after the ball to disk friction test; (c) plot of grooves depth after the ball to disk friction test versus the mass concentrations of Field’s alloy nanoparticle in PAO oil (pure PAO oil, 0.02 wt. %, 0.04 wt. %, 0.06 wt. %, 0.08 wt. %, and 0.1 wt. %, respectively)

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Fig. 7

WSD on the ball surface using different mass concentrations of modified Field’s alloy nanoparticle in PAO as lubricants after the ball to disk friction test

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