多孔钛的粉末冶金法制备及其力学性能  

Fabrication and Mechanical Properties of Porous Titanium Foam

作　　者：胡紫英[1,2] 李美姮[1] 徐威[1] 陈芊[1] 胡望宇[1] 苏勇 

机构地区：[1]湖南大学物理与微电子科学学院,湖南长沙410082 [2]湖南科技学院电子工程系,湖南永州425100 [3]湖南省衡阳市气象局,湖南衡阳421001

出　　处：《钛工业进展》2010年第4期12-15,共4页Titanium Industry Progress

基　　金：湖南省教育厅科研项目资助(09C445)

摘　　要：采用粉末冶金法成功制备出力学性能与骨匹配的开孔型多孔钛,其孔隙率分布在8.6%～35.4%之间,平均孔径随孔隙率增加而增加;抗压强度随孔隙率的增加而降低,分布在252～848 MPa之间;通过应力-应变曲线计算得到其弹性模量在7.2～9.9 GPa之间,接近人骨弹性模量。此多孔钛有望成为理想的人工骨修复材料。Porous titanium foams with open-cellular structure were prepared successfully using a powder metallurgical method. The porosity of the porous titanium foams was at the range of 8. 6% to 35.4%. With the increasing of the porosity, the average pore size increased and the compression strength of the porous titanium foams decreased, which was from 252 MPa to 848 MPa. The modulus of the porous titanium foams was calculated from stress-strain curves. Results indicated that the elastic modulus of the porous titanium foams ranged from 7.2 to 9. 9 GPa, which was very close to that of natural bone. Therefore, the porous titanium foams were potential for being used as artificial bone implant materials.

关 键 词：粉末冶金法 多孔钛 力学性能 弹性模量 

分 类 号：TF125.22[冶金工程—粉末冶金]