ABSTRACT

Laser electrochemical compound deposition (LECD), which introduces a high-energy laser beam into the process of electrochemical deposition, has the advantages of a higher deposition rate and better machining quality. With the multiple-field characteristic coupling of LECD, the multi-physics simulation software, COMSOL, was selected to perform simulations to ascertain the influence of laser irradiation on electrochemical deposition. Here, the finite element model of LECD was established, the simulation of electric coupling with temperature and flow field was performed and the main forms of mass transfer were studied. The results demonstrate that the LECD process is primarily diffusion controlled. An electrodeposition rate experiment and local electrodeposition experiment were carried out for confirmation purposes. The experimental results of the electrodeposition rate study were consistent with the simulation results. Patterned localised electrodeposition was realised by LECD because of the enhanced effect of the laser irradiation on electrodeposition.

摘要

激光电化学复合沉积（LECD）是在电化学沉积过程中引入高能激光束，具有沉积速率高、加工质量好等优点。利用LECD的多场特性耦合，选择多物理场仿真软件COMSOL进行仿真，确定激光辐照对电化学沉积的影响。在此，建立了LECD的有限元模型，对温度和流场的电耦合进行了模拟，研究了传质的主要形式。结果表明，LECD 工艺主要是受扩散控制的。为了确认目的，进行了电沉积速率实验和局部电沉积实验。电沉积速率研究的实验结果与模拟结果一致。由于激光照射对电沉积的影响增强，因此通过 LEDD 实现了图案化的局部电沉积。