燃烧合成法制备多孔Ti-Ni形状记忆合金的研究  

Study on Porous Ti-Ni Shape Memory alloys Prepared by Combustion Synthesis

作　　者：李军[1] 储成林[2] 张树格[3] 苏娟[3] 

机构地区：[1]南京工业大学材料科学与工程学院,江苏南京210009 [2]东南大学机械工程学院,江苏南京210018 [3]南京工业大学电光源材料研究所,江苏南京210015

出　　处：《金属功能材料》2004年第4期10-13,共4页Metallic Functional Materials

摘　　要：使用Ti、Ni纯元素粉末 ,用燃烧合成技术制取了近等原子比的多孔Ti Ni形状记忆合金 ,一种理想的人造骨骼材料。通过选择合适的预热温度及各种工艺参数 ,得到了孔隙度达 70 % ,开孔率 95 %以上 ,孔径 10 0～ 30 0 μm为主 ,孔洞均匀分布 ,三维相互连通的样品。应用X 射线衍射、SEM扫描分析了产物相组成 ,除了TiNi母相外 ,还有少量的Ti2 Ni和Ni3 Ti中间相。结果表明 ,燃烧合成技术能制取均匀多孔的Ti Ni形状记忆合金 ,且工艺过程简单 ,节省能源 。Using pure Ti and Ni powders,a promising artificial bone material,nearly equiatomic stoichiometry Ti-Ni shape memory alloys porosint was prepared by combustion synthesis (CS) method.The sample possess 70% porosity,above 95% open porosity,was produced by choosing appropriate pre-heat temperature and technical parameters,its pores are homogeneous distribution,three-dimensionally interconnected,with 100～300μm size mainly.The XRD and SEM were used to investigate the phase composition of sample.There are a little Ti 2Ni and Ni 3Ti interphase besides TiNi marten phase.The results show that combustion synthesis technology can produce porous TiNi SMAs.Moreover,CS's simple process and energy savings make it is ideal method for producing TiNi SMAs.

关 键 词：燃烧合成 形状记忆合金 制备 人造骨骼材料 多孔材料 

分 类 号：TG139.6[一般工业技术—材料科学与工程]