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Preparation of nano-copper as lubrication oil additive

Journal of Central South University 2005年第S2期14卷 203-206页

作者：王晓丽徐滨士许一于鹤龙史佩京刘谦 National Key Laboratory for Remanufacturing Beijing 100072 China

nano-copper used as lubrication oil additive has good tribological property and active self-repairing effect for friction pairs. The reduction in liquid phase for preparing nano-additive is one of the most common method. nano-copper was prepared by reduction in liquid phase. The different project and routine practice for preparing nano-copper were researched. The dispersion problem of nano-copper was investigated by surface treatment and high dispersion. The particles dimension, the dispersion stability and the purity of nano-copper were characterized by TEM and XRD. The conclusion indicates that the methods of the preparation and dispersion can obtain 20nm copper additive with good dispersion property in lubrication oil.

关键词： nano-copper lubrication oil additive reduction in liquid phase dispersion

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Effect of nano-coppers with Different Dimensions on Tribological Properties of Lithium Grease

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China Petroleum Processing & Petrochemical Technology 2020年第1期22卷 118-126页

作者： Wang Jing Guo Xiaochuan Mi Hongying Zhou Weigui Yang Xin Institute of Military New Energy Technology Beijing 102300 Clean Energy Research Institute Shenzhen 518031 Army Logistics University of PLA Chongqing 401311

As an excellent anti-wear and friction-reducing additive,nano-copper has attracted extensive researches and attention in tribology ***,the existing researches are still limited to zero-dimensional nano-copper,that is,the effect of copper nanoparticles on the tribological properties of *** this paper,the effects of nano-coppers with different dimensions(copper nanoparticles,copper nanowires and copper nanoplates)on the anti-wear ability and frictionreducing performance of lithium grease were systematically *** the mechanism of interaction between dimension and tribological properties was explained in *** is concluded that the tribological properties of lithium grease can be improved by the addition of nano-coppers due to the formation of the molten copper film and the CuO tribochemical reaction film on the worn *** the dimension of nano-copper has a great influence on its tribological *** copper nanoparticles can play the role of nano-bearing to change the friction form from sliding friction to rolling friction,which would decrease the wear loss of friction *** wear loss can be sharply decreased by addition of copper nanoplates with micron-scale diameter and lamellar structure which significantly prevents the direct contact of micro-protrusions on the surface of friction pairs and reduces the“welding”between micro-protrusions due to local high temperature caused by friction.

关键词： nano-copper dimension additive tribology

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