高压电器2025，Vol.61Issue(3)：192-199,8.DOI:10.13296/j.1001-1609.hva.2025.03.023
SF6气体下石墨烯增强CuW80合金抗高能电弧烧蚀行为研究
Study on High-energy Arc Ablation Resistance of CuW80 Alloy Enhanced by Graphene Under SF6 Atmosphere
摘要
Abstract
With the increasing installed capacity of the power grid and the gradual improvement of voltage level,the more demanding for arc ablation resistance of the electrical contact,which is the core element of circuit break-ers,is raised.A micro graphene is introduced into CuW80 alloy by the sintering and infiltration process,the high-energy arc resistance behavior variation of CuW80 alloy before and after adding graphene in SF6 atmosphere are studied in this paper.The results show that the electrical conductivity and hardness of CuW80-Gr alloy are im-proved compared with CuW80 alloy due to the excellent electrical conductivity of graphene and the excellent me-chanical properties of tungsten carbide ceramic particles formed by carbonization with W particles.SF6 is easy to ionize and produce gas ions to maintain arc combustion at high pressure.The first breakdown of CuW80 alloy re-sults in obvious ablation,and the average withstanding voltage strength in the 30 times breakdown process is signifi-cantly lower than that in the breakdown of vacuum environment.After the addition of graphene,due to the improve-ment of graphene on the viscosity of molten Cu liquid and the effect of carbonization to generate ceramic particles to disperse arc,the arc ablation resistance of CuW80-Gr alloy is improved compared with CuW80 alloy,and the ablation mass loss is significantly reduced.关键词
高压电触头/CuW80合金/高能电弧烧蚀/SF6气体/石墨烯Key words
high voltage electrical contact/CuW80 alloy/high-energy arc ablation/SF6 atmosphere/graphene引用本文复制引用
丁一,高美金,黄江倩,陈铮,韩钰,张乔..SF6气体下石墨烯增强CuW80合金抗高能电弧烧蚀行为研究[J].高压电器,2025,61(3):192-199,8.基金项目
国家电网有限公司总部科技资助项目(5500-202158363A-0-0-00).Project Supported by the State Grid Corporation of China Science and Technology Foundation(5500-202158363A-0-0-00). （5500-202158363A-0-0-00）
