多孔NiTi记忆合金的制备与微观分析  

Preparation of porous NiTi shape memory alloy and its microstructure analysis

作　　者：达国祖[1] 夏天东[2] 王天民[1] 李思渊[1] 

机构地区：[1]兰州大学物理科学与技术学院 [2]兰州理工大学材料学院,甘肃兰州730050

出　　处：《兰州大学学报（自然科学版）》2003年第3期31-34,共4页Journal of Lanzhou University(Natural Sciences)

基　　金：甘肃省省长基金资助项目 ( 1 998-0 0 7) .

摘　　要：为了提高 Ni Ti形状记忆合金的生物活性 ,采用自蔓延方法成功合成了 Ni Ti多孔合金 .研究了不同 Ni,Ti原子配比下合成的 Ni Ti合金的相成分 ,以及预热温度对合成的 Ni Ti合金相和孔隙度的影响 ,研究表明预热40 0℃时产物为单一的 B2 相 ,且孔隙度达到 46% .In order to improve the bio-activity of NiTi shape memory alloy(SMA),the porous NiTi SMA has been successfully prepared by self-propagating high-temperature synthesis(SHS).The porous NiTi internal phase with varied Ni and Ti atomic ratio was studied.The effects on the porous NiTi internal phase and the porosity by various preheating temperatures were also studied.The results show that the porous NiTi is single B 2 phase and the porosity is 46% when the preheating temperature is 400℃.

关 键 词：NITI形状记忆合金 自蔓延高温合成 孔隙度 

分 类 号：TG139[一般工业技术—材料科学与工程]