| 铜-10%石墨复合材料的载流摩擦磨损行为 |
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| 引用本文： | 马行驰,何国求,何大海,陈成澍,胡正飞,张卫华.铜-10%石墨复合材料的载流摩擦磨损行为[J].机械工程材料,2008,32(12). |
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| 作者姓名： | 马行驰 何国求 何大海 陈成澍 胡正飞 张卫华 |
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| 作者单位： | 同济大学材料科学与工程学院上海市金属功能材料开发应用重点实验室;国家磁浮交通工程技术研究中心;西南交通大学牵引动力国家重点实验室; |
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| 基金项目： | 国家重点基础研究发展计划(973)资助项目(2007CB714704); 国家自然科学基金资助项目(50771073); 教育部新世纪优秀人才支持计划资助项目(NCET-05-0388) |
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| 摘 要： | 用冷压烧结粉末冶金法制备了铜-10%石墨复合材料;对复合材料进行了拉伸、冲击试验;用SEM、电滑动磨损试验机等分析了材料的断口形貌和载流摩擦磨损性能,探讨了其磨损机理。结果表明:由于铜-10%石墨复合材料中石墨含量较高,该材料的拉伸断裂为脆性断裂;在非载流条件下,试样的磨损量随着试验载荷、滑动速度的增加而增大;载流30 A条件下,由于电流产生大量的电弧热促进了石墨的润滑作用,与非载流相同磨损条件结果相比摩擦因数降低、磨损量减小。
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| 关 键 词： | 铜/石墨复合材料 受电靴 载流磨损 |
Electrical Sliding Wear Behavior of Copper-10%graphite Composites |
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| MA Xing-chi,HE Guo-qiu,HE Da-hai,CHEN Cheng-shu,HU Zheng-fei,ZHANG Wei-hua.Electrical Sliding Wear Behavior of Copper-10%graphite Composites[J].Materials For Mechanical Engineering,2008,32(12). |
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| Authors: | MA Xing-chi HE Guo-qiu HE Da-hai CHEN Cheng-shu HU Zheng-fei ZHANG Wei-hua |
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| Abstract: | Copper-10%graphite composites were prepared by means of cold pressure sintering powder metallurgy method.Tensile and impact tests were carried out to gain the mechanical properties of the composites,and scanning electron microscope(SEM) and electrical sliding wear tests were used to analyze the fracture appearance and wear properties of the composites.The results indicate that the tensile fracture appeared brittleness because of the high graphite content.Under non-current carrying condition,the wearing loss... |
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| Keywords: | copper-graphite composite collector shoe electrical sliding wear |
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