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工程设计学报
工程设计学报  2007, Vol. 14 Issue (3): 253-261    
工程设计理论、方法与技术     
双电层对水润滑特性影响的实验研究
白少先1，黄平2，孟永钢1，温诗铸1
1.清华大学 精密仪器与机械学系， 摩擦学国家重点实验室，北京 100084； 2.华南理工大学 机械工程学院， 广东 广州 510640
Experimental study of influence on electric double layer on aqueous lubrication
BAI  Shao-Xian1，HUANG  Ping2，MENG  Yong-Gang1，WEN  Shi-Zhu1
1. State Key Laboratory of Tribology, Department of Precision Instruments and Mechanology,Tsinghua University, Beijing 100084, China; 2. College of Mechanical Engineering, South China University of Technology, Guangzhou 510640, China
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Abstract: Near interfaces of solid and liquid, electric double layer has electro-viscosity effects. Theoretical study shows that this electro-viscosity will make friction coefficient increase in thin film lubrication. The purpose of this study is to verify the influence of electric double layer on aqueous lubrication in an experimental way. Experiments were done on a composite sliding block tester, with distilled water as basic lubricant. Two different methods were adopted in the experiments. One is to add external electric field on friction pair and the other is to change ionic concentration in lubricant with additive -KCL here. Both methods can make electro-viscosity change according to theoretical research. During experiments, friction coefficient and steaming potential were measured.Experimental results show that electro-viscosity has significant influence on friction coefficient when film is thin. Friction coefficient increases obviously under thin film situation when external electric field is added or ionic concentration of lubricant is changed. In addition, with the increase of concentration of KCL, friction coefficient increases quickly. Test results indicate that electro-viscosity has significant effects on aqueous lubricating performance.
Key words: electric double layer    electro-viscosity    friction coefficient    streaming potential
出版日期: 2007-06-28
基金资助:

National Science Foundation of China (50375052); National Science Foundation for Post-doctoral Scientists of China (2005037336)
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引用本文:

白少先，黄平，孟永钢，温诗铸. 双电层对水润滑特性影响的实验研究[J]. 工程设计学报, 2007, 14(3): 253-261.

BAI Shao-Xian，HUANG Ping，MENG Yong-Gang，WEN Shi-Zhu. Experimental study of influence on electric double layer on aqueous lubrication[J]. Chinese Journal of Engineering Design, 2007, 14(3): 253-261.

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https://www.zjujournals.com/gcsjxb/CN/    或    https://www.zjujournals.com/gcsjxb/CN/Y2007/V14/I3/253

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