工艺参数对Micro-FAST制备多孔NiTi合金的影响  

Effects of Processing Parameters on Porous NiTi Alloys Prepared by Micro-FAST

作　　者：高翌 赵旦 刘剑[1] 杨屹[1] 杨刚[1] 

机构地区：[1]四川大学,四川成都610065 [2]武警警官学院,四川成都610200

出　　处：《稀有金属材料与工程》2017年第8期2190-2196,共7页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(51605317;51575369;51675357)

摘　　要：采用Micro-FAST技术成功制备出多孔NiTi合金,烧结时间短,成本低,节能环保。研究结果表明,随着烧结温度的升高,试样的孔隙度先减小后增加,再略微减小,有害相NiTi_2和Ni_3Ti减少,趋于形成NiTi单相。当烧结温度为1100℃时,试样孔隙分布均匀,随着烧结保温时间的延长,烧结试样孔隙度高达32.2%,孔径范围在100μm左右,符合人体骨组织植入物的要求。Porous NiTi alloys were prepared using Micro-FAST which can realize the sintering process in a short sintering time at a low cost and in a environmental-friendly way. Results show that with the increasing sintering temperature, the porosity of the porous NiTi alloys decreases firstly, then increases and slightly declines finally. Undesired NiTi2 and Ni3 Ti phases are formed and decrease gradually with a trend to form single NiTi phase. At the sintering temperature of 1100 ℃ the porous NiTi alloys exhibit well-distributed pores. With the increasing holding time, the porosity increases significantly to 32.2% and the pore sizes are about 100 μm, which meets the requirement of human bone implants.

关 键 词：烧结温度 烧结保温时间 Micro-FAST 多孔NITI合金 生物医用材料 

分 类 号：R318.08[医药卫生—生物医学工程] TF125.6[医药卫生—基础医学]