Friction reducing anti-wear and self-repairing properties of nano-Cu additive in lubricating oil

被引：0
|
作者：
Zhang Y. [1 ,2 ]
Yan J. [2 ]
Sun L. [2 ]
Yang G. [2 ]
Zhang Z. [2 ]
Zhang P. [2 ]
机构：
[1] Institute of Surface Micro and Nano Materials, Xuchang University
[2] Key Lab for Special Functional Materials of Ministry of Education, Henan University
来源：
Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | 2010年 / 46卷 / 05期
关键词：
Lubricating oil; Mechanism; Nano-Cu additive; Self-repairing performance;
D O I：
10.3901/JME.2010.05.074
中图分类号：
学科分类号：
摘要：
Cu nanoparticles coated with dialkyl dithiophosphate (Cu-DDP) are synthesized in-situ by redox method. The size and structure of the nanoparticles are characterized by using transmission electronic microscopy (TEM) and electronic diffraction (ED) analysis. The anti-wear and friction-reducing and self-repairing behaviors of Cu-DDP as additive in base lubricating oil are investigated on both four-ball machine and MRH-3 stock-on-ring testing machine. Scanning electronic microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and electronic balance (EB) are used to study the grinding crack topography, elemental composition and chemical valence, and the quality change of the self-repairing Cu film on the stock respectively. The test results show that at a load of 300 N a 4% additive amount of Cu nanoparticles exhibits the best self-repairing performance. The stock mass increases by 0.5 mg after 4-hour testing, and the wear scar diameter and friction coefficient are obviously decreased. The Cu nanoparticles is deposited on the frictional surface to form deposited film during the friction process, which could get synergetic effect with the friction chemical reaction film coated on the surface. As a result, the excellent anti-wear and self-repairing performances are obtained. © 2010 Journal of Mechanical Engineering.
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页码：74 / 79
页数：5
相关论文
共 12 条
  • [1] Zhou J., Wu Z., Zhang Z., Et al., Study on an antiwear and extreme pressure additive of surface coated LaF3 nanoparticles in liquid paraffin, Wear, 249, pp. 333-337, (2001)
  • [2] Chen S., Liu W., Yu L., Preparation of DDP coated PbS nanoparticles and investigation of the antiwear ability of the prepared nanoparticles as additive in liquid paraffin, Wear, 218, pp. 153-158, (1998)
  • [3] Xue Q., Liu W., Zhang Z., Friction and wear properties of a surface modified TiO<sub>2</sub> nanoparticle as an additive in liquid paraffin, Wear, 213, pp. 29-32, (1997)
  • [4] Jiang S., Chen G., Study on friction chemistry of LaPP, Journal of Mechanical Engineering, 36, 8, pp. 84-87, (2000)
  • [5] Zhang Z., Zhang J., Xue Q., The synthesis and characterization of molybdenum disulfide nanocluster, Physical Chemistry, 49, pp. 1973-1975, (1994)
  • [6] Zhou J., Wu Z., Zhang Z., Et al., Tribological behavior and lubricating mechanism of Cu nanoparticles in oil, Tribology Letters, 8, pp. 213-218, (2000)
  • [7] Zhou J., Yang J., Zhang Z., Et al., Study on the structure and tribological properties of surface-modified Cu nanoparticles, Materials Research Bulletin, 34, 9, pp. 1361-1367, (1999)
  • [8] Wang X., Xu B., Xu Y., Et al., Study on friction and wear behavior and mechan-ism of nano-Cu additive in lubrication oils, Tribology, 27, 3, pp. 235-240, (2007)
  • [9] Li B., Xia Y., Wang X., Et al., Investigation of tribological properties of nano-Cu as additives in PEG2400, Tribology, 25, 5, pp. 385-389, (2005)
  • [10] Tatasov S., Kolubaev A., Belyaev S., Et al., Study of friction reduction by nanocopper additives to motor oil, Wear, 252, pp. 63-69, (2002)
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