Qin Ge, Peng Haoyu, Zhang Yunyan, Ming Pingmei, Liu Huan, Wu Xiangyang, Zhang Wenbang, Zheng Xingshuai, Niu Shen
School of Mechanical and Power Engineering, Henan Polytechnic University, Jiaozuo 454000, China.
Materials (Basel). 2024 Oct 12;17(20):4986. doi: 10.3390/ma17204986.
The efficient and cost-effective preparation of masks has always been a challenging issue in mask-based electrochemical machining. In this paper, an electrochemical machining process of micro-textures is proposed using hard particle masks such as titanium and zirconia particles. Numerical simulations were conducted to analyze the formation mechanisms of micro-protrusion structures with insulating and conductive hard particle masks, followed by experimental verification of the process. The results indicate that when the hard particles are electrically insulating, metal material preferentially dissolves at the center of the particle gap, and the dissolution then expands over time in depth and towards the particle contact points. Conversely, using the conductive particles as the masks, such as titanium particles, dissolution initially occurs in a ring region centered at the contact point between the hard particle and the anode, with a radius approximately one-quarter of the chosen particle's diameter (200 μm), and then continues to expand outward.
在基于掩膜的电化学加工中，高效且经济高效地制备掩膜一直是一个具有挑战性的问题。本文提出了一种使用钛和氧化锆颗粒等硬质颗粒掩膜进行微纹理电化学加工的工艺。进行了数值模拟，以分析使用绝缘和导电硬质颗粒掩膜时微凸起结构的形成机制，随后对该工艺进行了实验验证。结果表明，当硬质颗粒为电绝缘时，金属材料优先在颗粒间隙中心溶解，然后溶解随时间在深度上并朝着颗粒接触点扩展。相反，使用导电颗粒作为掩膜，如钛颗粒，溶解最初发生在以硬质颗粒与阳极之间的接触点为中心的环形区域，半径约为所选颗粒直径（200μm）的四分之一，然后继续向外扩展。
