电流和石墨含量对铜/石墨复合材料磨损行为的影响

IF 2.2 3区工程技术 Q2 ENGINEERING, MECHANICAL

Journal of Tribology-transactions of The Asme Pub Date : 2023-01-05 DOI:10.1115/1.4056630

Rui Zhu, Xue Zuo, Yuankai Zhou, Wenxin Xie

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引用次数: 0

摘要

合理的电流和石墨含量可以减缓摩擦副的磨损失效，延长滑环的使用寿命。为研究铜/石墨复合材料在不同电流下的磨损行为，分别制备了石墨含量为30%、25%、20%和15%的复合材料CG30、CG25、CG20和CG15作为滑环材料。进行了一系列摩擦磨损试验，测量了磨损形貌和摩擦振动。随着电流的增大，CG30的磨损机制为黏着磨损，CG25的磨损机制由黏着磨损转变为黏着磨损与电弧烧蚀的联合作用。CG30的抗磨效果优于CG25。而CG25的抑弧能力优于CG30。因此，为了提高滑环的使用寿命，建议选用复合材料CG25。

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Effect of electric current and graphite content on the wear behaviors of copper/graphite composites

The reasonable electric current and graphite content will slow down the wear failure of friction pair and prolong service life of slip ring. To study the wear behaviors of copper/graphite composites under different currents, the composites with graphite content of 30%, 25%, 20% and 15%, denoted as CG30, CG25, CG20 and CG15, were prepared as the material of slip ring. A series of friction and wear tests were carried out, and wear topography and friction vibration were measured. With the increase of electric current, the wear mechanism of CG30 is adhesive wear, and that of CG25 changes from adhesive wear to combined effect of adhesive wear and arc ablation. The anti-wear effect of CG30 is better than CG25. However, the ability of arc suppression of CG25 is better than that of CG30. Therefore, in order to improve service life of slip ring, it is recommended to choose the composite CG25.

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来源期刊

Journal of Tribology-transactions of The Asme 工程技术-工程：机械

CiteScore

4.20

自引率

12.00%

发文量

117

审稿时长

4.1 months

期刊介绍： The Journal of Tribology publishes over 100 outstanding technical articles of permanent interest to the tribology community annually and attracts articles by tribologists from around the world. The journal features a mix of experimental, numerical, and theoretical articles dealing with all aspects of the field. In addition to being of interest to engineers and other scientists doing research in the field, the Journal is also of great importance to engineers who design or use mechanical components such as bearings, gears, seals, magnetic recording heads and disks, or prosthetic joints, or who are involved with manufacturing processes. Scope: Friction and wear; Fluid film lubrication; Elastohydrodynamic lubrication; Surface properties and characterization; Contact mechanics; Magnetic recordings; Tribological systems; Seals; Bearing design and technology; Gears; Metalworking; Lubricants; Artificial joints