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Article

Interaction Lubrication Mechanism Between Nano-Biochar and Traditional Oil Additives Under Various Sliding Conditions

1
Hubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan University of Technology, Wuhan 430070, China
2
Hubei Collaborative Innovation Center for Automotive Components Technology, Wuhan University of Technology, Wuhan 430070, China
3
State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
4
Automotive and Tractors Engineering Department, Faculty of Engineering, Minia University, El-Minia 61519, Egypt
*
Author to whom correspondence should be addressed.
Lubricants 2025, 13(3), 102; https://doi.org/10.3390/lubricants13030102
Submission received: 19 January 2025 / Revised: 7 February 2025 / Accepted: 20 February 2025 / Published: 25 February 2025

Abstract

The development of green lubrication requires nano-lubricants to possess more environmentally friendly fabrication modes and materials with superior tribological properties. This study investigates the tribological properties of nano-biochar in PAO6 base oil and in combination with different additives. The effect of adsorption on friction reduction and anti-wear performance is demonstrated by replacing the friction sub-materials in the four-ball friction test. Based on the comparison of wear region characterization, the incorporation of nano-biochar improves the friction reduction performance of detergent and dispersant base oils with a reduction in coefficient of friction (COF) by 16.7% and 19.0%, respectively, and produces a synergistic effect on the anti-wear performance. When nano-biochar is compounded with anti-wear agents and friction reducer, there is a synergistic effect on friction reduction performance, and COF decreases by 9.4% and 4.5% compared with anti-wear agents and friction reducer base oils, respectively. A method to analyze the friction reduction and anti-wear mechanism of nano-additives in complex lubrication system is proposed, which reveals in depth the interaction law and synergistic lubrication mechanism between NBC and additives in the friction process.
Keywords: nano-biochar; lubricant additives; adsorption; synergistic effect; friction reduction and anti-wear mechanism nano-biochar; lubricant additives; adsorption; synergistic effect; friction reduction and anti-wear mechanism

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MDPI and ACS Style

Guan, W.; Hou, X.; Wang, Y.; Chu, C.; Ali, M.K.A. Interaction Lubrication Mechanism Between Nano-Biochar and Traditional Oil Additives Under Various Sliding Conditions. Lubricants 2025, 13, 102. https://doi.org/10.3390/lubricants13030102

AMA Style

Guan W, Hou X, Wang Y, Chu C, Ali MKA. Interaction Lubrication Mechanism Between Nano-Biochar and Traditional Oil Additives Under Various Sliding Conditions. Lubricants. 2025; 13(3):102. https://doi.org/10.3390/lubricants13030102

Chicago/Turabian Style

Guan, Weiwei, Xianjun Hou, Youheng Wang, Chen Chu, and Mohamed Kamal Ahmed Ali. 2025. "Interaction Lubrication Mechanism Between Nano-Biochar and Traditional Oil Additives Under Various Sliding Conditions" Lubricants 13, no. 3: 102. https://doi.org/10.3390/lubricants13030102

APA Style

Guan, W., Hou, X., Wang, Y., Chu, C., & Ali, M. K. A. (2025). Interaction Lubrication Mechanism Between Nano-Biochar and Traditional Oil Additives Under Various Sliding Conditions. Lubricants, 13(3), 102. https://doi.org/10.3390/lubricants13030102

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