生物医用Ti6Al4V合金注射成形研究  

Study on powder injection molding of Ti6Al4V alloys for biomedical application

作　　者：刘超[1] 孔祥吉 吴胜文[2,3] 况春江 LIU Chao;KONG Xiang-ji;WU Sheng-wen;KUANG Chun-jiang(China Iron and Steel Research Institute, Beijing 100081, China;Beijing Special Powder Metallurgy Materials Engineering Technology Research Center, Beijing 100081, China;Advanced Technology &MaterialsCo.,Ltd., Beijing 100081, China)

机构地区：[1]钢铁研究总院,北京100081 [2]北京市特种粉末冶金材料工程技术研究中心,北京100081 [3]安泰科技股份有限公司,北京100081

出　　处：《粉末冶金工业》2019年第2期7-11,共5页Powder Metallurgy Industry

基　　金：国家国际科技合作专项项目(2014DFA50220)

摘　　要：利用PEG基粘结剂体系和气雾化球形Ti6Al4V合金粉制备了成分均匀、流变性能及热性能稳定的注射料,并进行烧结。通过工艺参数调控,1 320℃下保温3 h的烧结试样相对密度97.6%,极限抗拉强度900 MPa,屈服强度867 MPa,伸长率为12%,力学性能整体满足ASTM F2885-11标准要求。高真空烧结条件加速了烧结件的致密化过程,而且能够有效降低氧、氮等杂质元素的含量,除氧元素质量分数(0.229%)略高于标准值(<0.200%)外,其他杂质元素含量均满足ASTMF2885-11标准。PEG-based binder system and gas atomized spherical Ti6 Al4 V alloy powder were used to prepare injection materials with uniform composition,stable rheological property and thermal property,and then the samples were sintered. Through the adjustment and control of process parameters,the relative density of sintered samples sintered at 1 320 ℃ for 3 h is 97.6%,the ultimate tensile strength is 900 MPa,the yield strength is 867 MPa,and the elongation is 12%. The mechanical properties of the sintered samples meet the requirements of ASTM F2885-11.High vacuum sintering conditions accelerate the densification process of sintered samples,and can effectively reduce the content of oxygen,nitrogen and other impurity elements. The content of oxygen elements(0.229%)is slightly higher than the standard value(<0.200%),while the content of other impurity elements all meet ASTMF2885-11 standard.

关 键 词：生物医用材料 金属粉末注射成形 TI6AL4V 

分 类 号：R318.08[医药卫生—生物医学工程]