基于Fluent气固两相流数值模拟,研究电场辅助冷喷涂超微颗粒的加速特性,分析基板电压与喷涂距离对超微颗粒撞击速度的影响。结果表明:电场辅助冷喷涂中超微颗粒在电场力作用下能突破激波阻力,实现有效沉积;增大基板电压可提高颗粒撞击速度;大粒径颗粒的加速取决于惯性力,而超微颗粒的加速取决于电场力;同传统冷喷涂一样,电场辅助冷喷涂也存在最佳喷涂距离,且最佳喷涂距离与颗粒粒径无关。 Based on Fluent gas-solid two-phase flow numerical simulation, the accelerating properties of electric field-assisted cold sprayed ultrafine particles were studied. The influence of substrate voltage and spray distance on the impact velocity of ultrafine particles was analyzed. The results show that the ultrafine particles in electric field assisted cold spraying can break the shock resistance under the action of electric field force to achieve effective deposition. Increasing the substrate voltage can increase the particle impact velocity. The acceleration of large particle size depends on the inertial force, The acceleration of the particles depends on the electric field force. As with the traditional cold spraying, the optimal spraying distance is also available for electric field assisted cold spraying, and the optimal spraying distance is independent of the particle size.