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《Rare Metal Materials and Engineering》 2013-S1
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Oxide Gel’s Deposition Behavior in Porous Aluminum

Li Zhenhua, Ren Hui, Jiao Qingjie, Wang Xiaoyu (State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China)  
Porous aluminum is a new kind of ACM (advanced composite material) which consists of metallic framework and pores. It has many advantages such as small density, adjustable porosity, and high strength. In the present work, the new complex was obtained by depositing iron oxide gel into the pores of porous template. Then, we compared the differences of porous aluminum when oxide gel was charged or not. Open-porous aluminum with two different pore sizes were selected as templates and iron oxide gel was embedding guest. A series of Al/Fe2O3 complexes were prepared via a liquid dipping method. The structure, morphology, porosity and thermal decomposition of two products were characterized by SEM, micrO CT (Computed Tomography), Mercury Porosimeter and DSC. The results prove that the oxide gel deposited into pores of porous aluminum and gel framework would not collapse with a proper drying method. Analysis results show that pore diameters and porosity of complexes decreased remarkably compared to porous aluminum. Particularly, the porosity of the complex with small pore diameter was reduced from 92% to 13%. Thermal analysis shows that the thermal decomposition temperature of complex is around 607℃. The new complexes have potential application in the field of structural energetic materials.
【Fund】: 爆炸科学与技术国家重点实验室自主课题(QNKT12-03)
【CateGory Index】: TB383.4
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