激光技术, 2023, 47 (2): 225, 网络出版: 2023-04-12   

激光制备新型石墨烯/铜基复合电触头

A novel graphene/Cu hybrid electrical contact fabrication by laser processing
作者单位
1 国网内蒙古东部电力有限公司 兴安供电公司 运检技术部, 乌兰浩特 137400
2 陕西科技大学 材料科学与工程学院, 西安 710021
摘要
为了解决电力系统中关键材料电触头同时受到电弧烧蚀、动静触头相互碰撞产生的冲击载荷和摩擦以及电流产生焦耳热引起的熔焊的问题, 提高电气设备的使用性能, 发展新型高性能触头材料, 提出了一种石墨烯/紫铜复合触头的新型制备方法。采用等离子体辅助加工手段, 在质量分数为0.999的紫铜表面上制备出镍铜合金过渡层, 在此过渡层上利用高功率连续激光原位制备石墨烯表面薄膜, 全覆盖于紫铜基底表面, 作为独立涂层来抵抗触头材料所受的破坏, 探索了制备石墨烯复合触头材料过程中的等离子体辅助加工工艺以及激光加工工艺。结果表明, 石墨烯/铜基触头材料具有优异的电工特性, 电阻与紫铜相近, 硬度为紫铜的1.8倍, 摩擦系数仅为0.06。本研究可为电工材料提供新的解决思路和新的材料体系。
Abstract
In order to improve the performance of electrical equipment, it is urgent to develop new high performance contact materials for electric power system. A novel preparation method of graphene/copper composite contacts was presented in this paper. The Ni-Cu alloy transition layer was prepared on the surface of copper (mass fraction was 0.999) by plasma-assisted processing. On such a transition layer, the graphene surface film was prepared by a high-powered continuous-wave laser in situ, covering the surface of copper as an independent coating to resist the damage of contact material. The plasma-assisted processing and laser processing processes of graphene composite contact materials were explored. The results show that the graphene/copper-based contact materials have excellent electrical characteristics, the resistance is similar to red copper, hardness is 1.8 times that of red copper, friction coefficient is only 0.06. This work can provide a new solution and a new material system for electrical materials.

徐国辉, 李喜春, 董彬, 于世奇, 王林, 徐存鑫, 郑希, 叶晓慧. 激光制备新型石墨烯/铜基复合电触头[J]. 激光技术, 2023, 47(2): 225. XU Guohui, LI Xichun, DONG Bin, YU Shiqi, WANG Lin, XU Cunxin, ZHENG Xi, YE Xiaohui. A novel graphene/Cu hybrid electrical contact fabrication by laser processing[J]. Laser Technology, 2023, 47(2): 225.

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