三维网状（IPC）结构对复相陶瓷织构演化影响的研究

Multiphase ceramics containing Ti, B, C were produced using Hot-press method and the mechanical properties at room and high temperatures were determined. It was indicated the tridimensional net structure is helpful for enhacing mechanical properties at high temperatures. Relationship between laminated structure, interfacial status and properties in laminates were investigated. Residual stress in laminated structure were analyzed and the optimal ratio of thickness of layers and minimum numbers of layers for optimum design of laminates with strong bond-interface were presented. Al2O3/ZrO2 and Al2O3/Ti3SiC2 multi-layered composite were studied and the optimum design rules were confirmed experimentally. Mechanical properties and macroscopical response in laminates at high temperatures were presented.

精确控制材料的微观结构、相组成及原位反应进程是制备高性能材料急需解决的关键问题。本研究把三维网状结构同材料织构演变结合起来，研究三维网状输运机制同材料微观结构及相组成演变的关系，建立原子在非化学计量过渡塑性相三维网状结构骨架中传输模型，通过改变输运过程调控材料微观结构。为制备仿生新材料及结构功能一体化材料提供新思路。