中文摘要：

核废料储存装置需长久埋于地下,其材料（包括低碳钢、Cu、Ti、镍基合金及不锈钢等）的防腐设计至关重要。以铸铁和Q235钢的防腐蚀为出发点,采用有限元方法,分析了冷喷涂制备铸铁表面铜涂层和Q235钢表面不锈钢涂层的沉积特性。结果表明,颗粒的速度越大,其扁平程度越高,基板上凹坑深度越深;最大塑性变形、最大应力以及最大温度分布位置为粒子与基板的接触部位,温度分布与塑性应变分布一致;撞击过程中,能量在粒子和基板间发生转移与转化。

英文摘要：

Nuclear waste storage device needs to be buried underground for a long period.So anti-corrosion design of its commonly used materials such as low carbon steel,Cu,Ti,Ni-based alloy and stainless steel are crucial.In this paper,corrosion prevention of cast iron and Q235 steel which were used as waste storage materials had been studied.Finite element method of LS-DYNA was adopted to study particle deposition characteristic in cold spray.Deposition processes of copper particle on cast iron and stainless steel particle on Q235 steel surface were simulated.Results show that with the increase of particle velocity,its flatness is also increased,and crater depth on substrate surface is deeper.Maximum plastic deformation and stress,area of maximum temperature locate on the contact region between particle and substrate.Temperature distribution and plastic strain distribution are consistent.In the impacting process,energy transfers and converts between the particle and substrate.