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http://dx.doi.org/10.14775/ksmpe.2021.20.12.016

Wear Characteristics of Lubricant with Nano-diamond Particles on Al-6061 Aluminum Alloy  

Hwang, Sung-Wan (Department of Automotive Engineering, Busan Campus of Korea Polytechnics)
Publication Information
Journal of the Korean Society of Manufacturing Process Engineers / v.20, no.12, 2021 , pp. 16-23 More about this Journal
Abstract
Pin-to-disc wear testing experiments were conducted to investigate the wear characteristics of commercial oil (5W-40) with nano-diamond particles. The upper specimen was a SUJ-2 high-carbon chromium steel ball with a diameter of 4 mm, and the lower specimen was made of the Al-6061 alloy. The applied load was 5 N, and the sliding speed was 0.25 m/s. The wear tests were conducted at a sliding distance of 500 m. The friction coefficients and wear rates of the Al-6061 specimens were tested using commercial oil with different nano-diamond concentrations ranging from 0 to 0.02 wt.%. The addition of nano-diamond particles to commercial oil reduced both the wear rate and coefficient of friction of the Al-6061 alloy. The use of nano-diamond particles as a solid additive in oil lubricants was found to improve the tribological behavior of the Al-6061 alloy. For the Al-6061 alloy, the optimal concentration was found to be 0.005 wt.% in view of the friction coefficient and wear rate. Further investigation is needed to determine the optimal concentration of nano-diamond particles for various loadings, sliding speeds, oil temperatures, and sliding distances.
Keywords
Nano-diamond; Commercial Oil; Al-6061 Alloy; Tribology; Friction Coefficient;
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Times Cited By KSCI : 1  (Citation Analysis)
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