| INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
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| Preparation, Characterization and Tribological Properties of Oleic Acid Modified Graphitic Phase Carbon Nitride |
| YANG Changxing1, WANG Guxia1,2,3,*, GUO Shengwei4
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1 School of Chemistry & Chemical Engineering, North Minzu University, Yinchuan 750021, China
2 Ningxia Key Laboratory of Solar Chemical Conversion Technology, Yinchuan 750021, China
3 Key Laboratory for Chemical Engineering and Technology, State Ethnic Affairs Commission, Yinchuan 750021, China
4 School of Materials Science & Engineering, North Minzu University, Yinchuan 750021, China |
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Abstract Graphite phase carbon nitride (g-C3N4) has great potential application in the lubrication field due to its high specific surface area, ultra-low interlaminar shear strength and surface chemical stability. In this work, oleic acid modified graphite phase carbon nitride (g-C3N4/OA) nano sheets were prepared by condensation reflux method. FTIR, XRD, SEM, AFM, TGA, BET was employed to characterize the structure and morphology of g-C3N4/OA. And the tribological properties of 150BS regenerated base oil containing g-C3N4/OA were investigated by four ball method. The results show that the average friction coefficient (AFC) and average wear scar diameter (AWSD) can be minimized when 0.03wt% g-C3N4/OA as lubricating oil additive was used. Compared with the pure 150BS regenerated base oil, AFC and AWSD were reduced by 27.7% and 9.2%, respectively. The mechanism analysis shows that the self-lubrication induced by layered structure shows good lubrication performance during the friction process. The self-repairing oil film containing iron, oxygen, nitrogen and carbon elements is formed at the friction contact interface, which effectively improves the antifriction and anti-wear performance of the lubricating oil.
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Published: 10 December 2023
Online: 2023-12-08
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| Fund:Key Research Project of Northern University for Nationalities (2021KJCX03), Key R&D Project of Ningxia Hui Auto-nomous Region (2022BDE03003) and Scientific Research Initiation Project for Introduced Personnel of Northern University for Nationalities (2020KYQD06). |
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2023, Vol. 37 
