Abstract
CuW80 composites with high anti-ablation property and low weight density has promising candidate on electrical contact device, which provides better comprehensive performance and light-weight for their application in high voltage direct current (HVDC). Despite the mature development of commercial electrical contact made by CuW80, it cannot satisfy the future practical requirements with ultrahigh voltage, large capacity and light-weight. How to improve the performance of CuW80 electrical contact remains a challenge. Here, we proposed graphene-modified CuW80 composite with high anti-ablation property, low density and good conductivity fabricated by spark plasma sintering method. By controlling the weight ratio of graphene, the metallographic structure and the grain size of tungsten particle can be modified, resulting in the improvement of hardness performance of graphene/CuW80 composite. What’s more, the graphene/CuW80 composite exhibits remarkable enhancement of anti-ablation property with more dispersed arc and flat arc erosion area, which attribute to that the lower work function of graphene and increased phase interface between graphene and copper or tungsten. This graphene/CuW80 composites paves the way to develop novel electric contact materials with perfect performance for potential application in ultrahigh voltage field.
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State Grid Corporation of China science and technology Foundation (5500-201958505A-0-0-00).
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Ding, Y. et al. (2023). High Anti-ablation Performance of Graphene/CuW Composite for Ultrahigh Voltage Electrical Contacts. In: Yang, Q., Li, J., **e, K., Hu, J. (eds) The Proceedings of the 17th Annual Conference of China Electrotechnical Society. ACCES 2022. Lecture Notes in Electrical Engineering, vol 1012. Springer, Singapore. https://doi.org/10.1007/978-981-99-0357-3_7
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DOI: https://doi.org/10.1007/978-981-99-0357-3_7
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