A bulk metal/ceramic composite material with a cellular structure  

作　　者：ZHAO Zhankui YAO Kefu LI Jingfeng 

机构地区：[1]Key Laboratory for Advanced Manufacturing by Materials Processing Technology, Department of Mechanical Engineering, Tsinghua Uni versity, Beijing 100084, China [2]Department of Materials Science and Engineering, Changchun University of Technology, Changchun 130012, China [3]State Key Laboratory of New Ceramic and Fine Process, Tsinghua University, Beijing 100084, China

出　　处：《Chinese Science Bulletin》2006年第2期235-239,共5页

基　　金：This work was supported by the China Postdoctoral Science Foundation(No.2003033133);the Basic Science Research Foundation of Tsinghua University(Grant No.091201107);the National Center for Nanoscience and Technology of China.

摘　　要：A bulk metal/ceramic composite material with a honeycomb-like micro-cell structure has been prepared by sintering the spherical Al90Mn9Ce1 alloy powders clad by Al2O3 nano-powder with the spark plasma sintering (SPS) technique. The as-prepared material consists of Al90Mn9Ce1 alloy cell and closed Al2O3 ceramic cell wall. The diameter of the cells is about 20―40 μm, while a thickness of the cell wall is about 1―2 μm. The ultimate compressive strength of the as-sintered materials is about 514 MPa, while its fracture strain is up to about 0.65 %. This composite material might possess good anti-corrosion, thermal endurance and other potential properties due to its unique microstructure. The result shows that the Al90Mn9Ce1/Al2O3 composite powders can be sintered by spark plasma sintering technique despite the large difference in their sintering temperature. This work offers a way of designing and preparing metal/ceramic composite material with functional property.A bulk metal/ceramic composite material with a honeycomb-like micro-cell structure has been prepared by sintering the spherical Al90Mn9Ce1 alloy powders clad by Al2O3 nano-powder with the spark plasma sintering （SPS） technique. The as-prepared material consists of Al90Mn9Cel alloy cell and closed Al2O3 ceramic cell wall. The diameter of the cells is about 20-40 μm, while a thickness of the cell wall is about 1 -2 μm. The ultimate compressive strength of the as-sintered materials is about 514 MPa, while its fracture strain is up to about 0.65 %. This composite material might possess good anti-corrosion, thermal endurance and other potential properties due to its unique microstructure. The result shows that the Al90Mn9Ce1/Al2O3 composite powders can be sintered by spark plasma sintering technique despite the large difference in their sintering temperature. This work offers a way of designing and preparing metal/ceramic composite material with functional property.

关 键 词：金属/陶瓷复合材料 多孔结构 制备方法 火花等离子体烧结 

分 类 号：TB333[一般工业技术—材料科学与工程]