Tribological properties of nano-BN/TiN lubricating additives modified with oleic acid

被引：5

作者：

Meng Fan-shan ^{[1
]}

Li Zheng ^{[2
]}

Ding Hao-hao ^{[1
]}

Wang Wen-jian ^{[1
]}

Liu Qi-yue ^{[1
]}

机构：

[1] Southwest Jiaotong Univ, Sch Mech Engn, Chengdu 610031, Peoples R China

[2] Qingdao Univ Technol Linyi, Dept Mech & Elect Engn, Linyi 273400, Shandong, Peoples R China

来源：

CAILIAO GONGCHENG-JOURNAL OF MATERIALS ENGINEERING | 2020年 / 48卷 / 05期

关键词：

nano-additive; BN; TiN; self-repairing; lubrication mechanism; BN; PERFORMANCE; FRICTION; OIL;

D O I：

10.11868/j.issn.1001-4381.2019.000428

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

BN, TiN and BN/TiN nano-additives were modified by oleic acid, characterized by Fourier transform infrared spectroscopy. The tribological properties of lubricating oil nano-additives were tested by four-ball friction and wear tester. The results show that oleic acid is grafted onto the surface of nanoparticles to improve their dispersibility. Compared with pure base oil, lubricating oil with nano-additives reduces friction coefficient by 11. 7% and wear scar diameter by 29. 5 % , respectively. No peeling and falling off appears on the surface of wear scar, and the depth and width of groove are obviously reduced, compared with single nano-additive BN or TiN, BN/TiN displays synergistic lubrication when mixed nano-additive BN/TiN is used. The nano-BN and TiN particles can enter the friction pair, play the role of micro-bearing, reduce friction and wear. The nano-BN entering the friction pair and reacting with the matrix material of the friction pair can form boron nitride, boron oxide and iron oxide to repair the wear surface.

引用

页码：160 / 167

页数：8

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