形成良好结合的低热阻界面是提高Diamond/Al复合材料导热和力学性能的关键，文献报道W基界面是最好的界面材料，但是Diamond/Al复合材料W基纳米多相界面结构的调控及其与复合材料导热和力学性能的构效关系尚缺少深入研究。本项目以磁控溅射法在金刚石表面沉积不同厚度的W纳米涂层，通过金刚石颗粒与W涂层高温反应形成W基纳米多相界面，研究不同高温反应工艺下W基纳米多相界面的组织演化规律，揭示不同晶面族、不同杂化状态对金刚石碳原子与W的反应和界面相生长机制的影响规律，阐明Diamond/Al复合材料W基纳米多相界面调控机制；研究不同厚度、不同物相成分与构型的界面结构对压力浸渗法制备的Diamond/Al复合材料的导热性能和力学行为的影响规律，建立W基纳米多相界面结构与Diamond/Al复合材料导热和力学性能的构效关系，为高导热铝基复合材料界面和导热/力学性能的设计调控提供实验和理论依据。

Formation of the interface with low thermal resistance is the key to improve thermal conductivity and the mechanical performance of the Diamond/Al composites. It has been reported that the W-based interfaces are the optimized interface. However, the modification of the W-based nano-multiphases interface in Diamond/Al composites and the corresponding relationship between microstructure and thermal/mechanical has not been investigated yet. In the present work, it is designed that W- coatings with various thickness would be deposited on the surface of the diamond particles by magnetron sputtering method, and then the diamond particles would react with the W coatings to form the W-based nano-multiphases interface. The microstructure evolution of the W-based nano-multiphases interface under different high temperature reaction process would be investigated, and the effect of the crystal planes and the hybridization of the carbon atoms on the reaction and the corresponding growth mechanism of the interfacial products between diamond and the W coatings would be discussed. Furthermore, the effect of the interface with various thickness, components and the configurations on the thermal conductivity and the mechanical properties of the Diamond/Al composites prepared by the pressure infiltration method would be investigated, and the corresponding relationship between microstructure and thermal/mechanical of the Diamond/Al composites would be established. It would provide experimental and theoretical support for the design and optimization of the interface and the thermal/mechanical performance of the Diamond/Al composites.