熔盐电解钛粉的粉末冶金性能研究  

Study on powder metallurgical properties of molten salt electrolytic titanium powder

作　　者：邓斌 穆天柱[2] 周翔幸[1] 袁铁锤 Deng Bin;Mu Tianzhu;Zhou Xiangxing;Yuan Tiechui(Research Institute of Powder Metallurgy,Central South University,State Key Laboratory of Powder Metallurgy,Changsha 410083,Hunan,China;Pangang Group Research Institute Co.,Ltd.,State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization,Panzhihua 617000,Sichuan,China)

机构地区：[1]中南大学粉末冶金研究院,粉末冶金国家重点实验室,湖南长沙410083 [2]攀钢集团研究院有限公司,钒钛资源综合利用国家重点实验室,四川攀枝花617000

出　　处：《钢铁钒钛》2024年第5期35-42,共8页Iron Steel Vanadium Titanium

摘　　要：以电解钛粉为原料,采用模压-烧结的方法制备多孔钛,对电解钛粉的成型和烧结特性进行了研究,最后针对制备的多孔钛的力学性能、孔结构、孔径分布及透气率等性能进行了表征。结果表明:随压制压力的增加,具有二次颗粒特征的电解钛粉颗粒间搭桥空间逐渐消失,可通过成型压力和烧结温度的调节获得不同孔隙率和力学强度的多孔钛。电解钛粉与氢化脱氢钛粉相比具有成型性能良好、更易发生烧结致密化、制件孔隙率高、透气率高、杨氏模量高等特点。使用粒径74~104μm的电解钛粉在70~110 MPa成型、1110℃烧结后的多孔钛,杨氏模量与人体松质骨接近,透气率和最大孔径满足烧结金属过滤元件(GBT6887-2019)TG035、TG020要求,在人体松质骨植入件以及过滤材料领域有应用前景。Electrolytic titanium powder was utilized as the raw material for fabricating porous titanium through press-sintering technique.The forming and sintering characteristics were investigated.Then the mechanical properties,pore structure,pore size distribution and permeability of the prepared porous titanium were characterized.The results show that with the increase of pressing pressure,the bridging space between the particles of electrolytic titanium powder with secondary particle characteristics gradually disappears.Porous titanium powder with different porosity and mechanical strength can be obtained by adjusting the molding pressure and sintering temperature.Compared to HDH titanium powder,electrolytic titanium powder exhibits better molding performance,easier sintering densification,higher porosity,greater permeability,and a higher Young’s modulus.A porous titanium was obtained by using electrolytic titanium powder with a particle size of 74~104μm at 70~110 MPa and then sintering it at 1110℃,whose Young’s modulus is similar to that of human cancellous bone.The permeability and maximum pore diameter meet the requirements of TG035 and TG020 in the standard for sintered metal filtration elements(GBT6887-2019),indicating promising applications in the fields of human cancellous bone implants and filtration materials.

关 键 词：多孔钛 电解钛粉 模压成型 烧结 力学性能 

分 类 号：TF124[冶金工程—粉末冶金] TF823[冶金工程—冶金物理化学]