The AlMnCe/Al2O3 metal/ceramic composite with 3D micro-cellular structure is prepared by spark plasma sintering (SPS) at 520 ℃. It consists of consecutive nano-Al2O3 sintering body phase and AlMnCe alloy discrete phase. The microstructure of sample, characteristic of the micro-cellular structure and microstructure of the interface are investigated via scanning electron microscope (SEM) and transmission electron microscope (TEM) method. The results indicate that two kinds of interfaces are formed in the sample during SPS process, one is the micro-nano type metal/ceramic interface between the metal cellular body and the nano-ceramic cellular wall, the other is the nano-nano type ceramic/ceramic interface in the nano-ceramic cellular wall. The fusion transition area with a width 200-300 nm at interface of the AlMnCe alloy and nano-Al2O3 sintering body is formed. The AlMnCe alloy has a sufficient immersional wetting for the Al2O3 cellular wall. The bonding of interface between the nano-Al2O3 sintering body and the AlMnCe alloy particle is powerful, and new phase and crack is not found.
Wang Shuxia, Li Shaolong, Jiang Qiuyue, Shi Lei, Wang Minggang, Jia Suqiu, Zhao Zhankui Key Laboratory of Advanced Structural Materials, Ministry of Education, Changchun University of Technology, Changchun 130012, China
