Study on Surface Finishing and Surface Modification of Metal Mold by Large-area Short-pulse Electron Beam

本研究旨在开发一种利用大面积短脉冲电子束辐照对金属模具进行表面光整和改性的新工艺。实验研究了电子束条件对表面结构和表面特性的影响。透射电镜观察和能谱分析表明，表面形成了与基体组织不同的再凝固层。大面积短脉冲电子束辐照可以提高涂层的拒水性和耐腐蚀性，并且可以通过电子束辐照条件进行控制。

This study aims to develop a new process for surface finishing and surface modification of metal mold by large-area short-pulse EB irradiation. Effects of EB conditions on the surface structure and the surface characteristics were experimentally discussed. TEM observation and EDX analysis clarified that a thin resolidified layer with the different micro structure from the matrix was formed on the surface. The water repellency and the resistance to corrosion could be improved by large-area short-pulse EB irradiation and also they could be controlled by the EB conditions.