ISSN: 1003-6326
CN: 43-1239/TG
CODEN: TNMCEW

Vol. 16    Special 3    December 2006

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Preparation and characterization of porous magnesium materials
刘希琴1,刘子利2,张晓红2,丰俊东2,俞挞汐2
(1.江苏省南京市南京航空航天大学材料科学与工程学院
2.College of Materials Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
)
Abstract: The proper spacer material and the preparation technology for biological compatible porous magnesium materials were explored by the powder metallurgy method, and microstructures, porosity and mechanical properties of sintered porous magnesium were investigated. The results show that compared with spacer materials of NH4CO3, NH3Cl and carbamide, NH4CO3 is the best one for preparation of sintered porous magnesium, and the worst one is NH3Cl. The isolated blind pores are formed mainly by the particle interval of the magnesium powders. Adding spacer material favors the formation of open pores, while has little contribution to the formation of blind pores. The overall porosity and porosity of open pore of the sintered porous magnesium increase with the increase of added spacer material, while decrease with the increase of the molding stress. The mechanical properties of sintered porous magnesium increase with decreasing addition of spacer material and increasing molding stress.
Key words: porous magnesium; powder metallurgy; spacer material; microstructure; porosity; mechanical properties
Superintended by The China Association for Science and Technology (CAST)
Sponsored by The Nonferrous Metals Society of China (NFSOC)
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