随着航天电子设备朝微型化和集成化方向的发展，对电子封装材料加工质量的要求越来越高。颗粒增强金属基复合材料作为应用最广泛的航天电子封装材料之一，如何提高其加工性能成为亟待解决的一大难题。针对以上问题，本项目以提高颗粒增强金属基复合材料的加工表面质量为目标，提出了磁场辅助电火花-电解复合加工技术研究，从电子激发、带电粒子运动和非傅里叶热传导等微观角度深入研究磁场辅助电火花-电解复合加工机理，建立火花放电和电化学溶解耦合的材料蚀除理论模型，结合实验研究，揭示金属基复合材料蚀除机理，研究磁场、电场和工具电极旋转的共同作用对蚀除产物输运的影响，突破高低压复合可控式RC微能脉冲电源开发、高低压脉冲数比例与陶瓷颗粒体积分数之间的匹配策略、工艺优化等关键技术问题，实现航天电子封装用颗粒增强金属基复合材料的高质量、低成本、精密加工。通过本项目的研究，对航天电子封装和特种加工技术的发展具有重要的促进作用。

With the development of astrionics toward microminiaturization and integration, the processing quality requirement has become increasingly high. Particle reinforced metal matrix composite (PRMMC) is one of the most widely used aerospace electronic packaging materials. How to improve the processing quality of PRMMC has become a critical problem. In this context, magnetic field assisted electrochemical and discharge hybrid machining is proposed in this project, aiming at improving the processing quality of PRMMC. The mechanism of magnetic field assisted electrochemical and discharge hybrid machining will be investigated from the aspect of electronic excitation, motion of charged particles and non-fourier thermal conducting equation. The theoretical model of material erosion based on the coupling of discharge and electrochemical dissolution will be developed. The formation mechanism of machined surface of PRMMC will be revealed by combining theoretical model and experimental study. The influence of the synergy of magnetic field, electric field and tool electrode rotation on transport of debris will be researched. Such key techniques as the development of high-low voltage combined controllable RC-pulse micro-energy generator, the match relation between the volume fraction of ceramic particle and the ratio of the number of higher and lower-voltage, and the process optimization study of magnetic field assisted electrochemical and discharge hybrid machining will be overcome. After that, magnetic field assisted electrochemical and discharge hybrid machining technique will be formed to provide high quality, low cost and high precision PRMMC machining, which will promote the development of aerospace electronic packaging and non-traditional machining.