Iron Powder Third Body Contribution to Friction Performance of Copper-Matrix Friction Composites |
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| Authors: | Linlin Su Fei Gao Lixue Wang Xiaoming Han Rong Fu |
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| Affiliation: | 1. Engineering Research Center of Continuous Extrusion, Dalian Jiaotong University, Dalian, P. R. China;2. School of Energy and Electromechanical Engineering, Hunan University of Humanities, Science and Technology, Hunan, P. R. China;3. Dalian Konform Technical Company Ltd., Dalian, P. R. China |
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| Abstract: | Iron third body contribution to friction performance of copper-matrix friction composites was explored by adding prefabricated iron powder into the friction surface. Friction tests were carried out under a sliding speed (V) range of 1.57–23.55 m/s and contact pressures (P) of 0.25–0.51?MPa by a pin-on-disc tribometer. These showed that an iron third body increased the friction coefficient when P ? V <2 75, and the average friction coefficient increment was 0.04 (7.29%). The reason was that iron third bodies played the role of abrasives, promoting an engaging force between the friction couple. When P ? V > 275, the average friction coefficient decrement was 0.04 (8.59%). This was because of oxidation of the iron third body, such that a smooth and dense oxide film was formed on the surface, assisting in a friction coefficient reduction. |
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| Keywords: | Iron powder third body friction coefficient |
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