| 外加电场作用下双电层电粘度对水润滑特性的影响 |
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| 引用本文： | 白少先,孟永钢,温诗铸,黄平.外加电场作用下双电层电粘度对水润滑特性的影响[J].润滑与密封,2006(10):1-3. |
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| 作者姓名： | 白少先 孟永钢 温诗铸 黄平 |
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| 作者单位： | 1. 清华大学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 |
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| 基金项目： | 国家自然科学基金;中国博士后科学基金 |
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| 摘 要： | 根据双电层理论,建立了外电场作用下流体润滑中的双电层引起的电粘度效应的数学模型,并通过组合滑块水润滑试验考察了双电层的电粘度效应对流体润滑性能的影响。结果表明,外加电场作用下,双电层电粘度效应对摩擦因数具有明显影响;当速度较低时,随着外加电压的增加,摩擦因数明显增大;随着速度的增加,摩擦因数增大幅度减小;试验结果同所建立的数学模型相符。
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| 关 键 词： | 双电层 外电场 数学模型 |
| 文章编号： | 0254-0150(2006)10-001-3 |
| 收稿时间： | 2006-01-17 |
| 修稿时间： | 2006年1月17日 |
Influence of Electric Double Layer Electro-viscosity on Aqueous Lubricating Performance |
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| Bai Shaoxian,Meng Yonggang,Wen Shizhu,Huang Ping.Influence of Electric Double Layer Electro-viscosity on Aqueous Lubricating Performance[J].Lubrication Engineering,2006(10):1-3. |
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| Authors: | Bai Shaoxian Meng Yonggang Wen Shizhu Huang Ping |
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| Affiliation: | 1. State Key Laboratory of Tribology ,Tsinghua University, Beijing 100084, China; 2. Mechanical Engineering College, South China University of Technology, Guangzhou Guangdong 510640, China |
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| Abstract: | The mathematical model was developed to account for the electro-viscosity function induced by electric double layer(EDL) under conditions of external electric fields working on friction pair.The effect of the EDL function on the lubricating performance of water for a composite sliding block-disc pair was investigated in the presence of external electric field.The experimental results show that EDL has apparent effect on the friction coefficient and streaming potential.The friction coefficient in the presence of the external electric field increases at a relatively smaller velocity corresponding to a smaller film thickness.The friction coefficient predicted from the mathematical model considering the electro-viscosity function agrees well with the tested one.Thus,the established model can be used to well explain the effect of the electro-viscosity of the EDL on the lubricating performance of a liquid. |
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| Keywords: | electric double layer external electric field mathematical model |
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