▎ 摘　　要

In order to evaluate the effect of graphene on the arc ablation resistance of the W-Cu composite, the high-energy vacuum arc generated by home-built equipment was used to ablate the W-Cu composites with graphene addition. The results showed that the WC and W2C phases were generated during the infiltration process in W-Cu com-posite with graphene addition. The average breakdown strength of the W-Cu composites decreased after adding graphene, while the breakdown strength value of the W-20Cu composite with graphene addition has less fluc-tuation. Furthermore, graphene can indeed disperse the arc and accelerate the transfer of arc root. Meanwhile, the added graphene coupled with the generated tungsten carbide particles can increase the viscosity of molten Cu phase and reduce its flowability, thereby suppressing splashing. As a result, the melting and splashing of W phase is reduced, which in turn decreases the volume of the ablation crater.