Porous nickel–titanium alloy prepared by gel-casting
来源期刊：Rare Metals2014年第4期
论文作者：Bo-Hua Duan Hai-Xia Hong De-Zhi Wang Hui-Jiang Liu Xiao-Jia Dong Dan-Dan Liang
文章页码：394 - 399
摘 要：To explore the preparation of porous nickel–titanium alloy with excellent properties, larger size and complex shape, the premixed powder of Ni and Ti with atomic ratio of 1:1 was shaped by gel-casting. The effects of solids loading and the content of dispersant on flow ability of nickel–titanium slurry and the mechanical properties of nickel–titanium sintered body were studied. The drying models under different solids loading were also discussed.The results show that the viscosity of slurries significantly increases with an increase in solids loading. After a proper process of drying, the green body with complex shape is obtained. The sintered body with porosity rate reaching up to49.5 % and compression strength reaching to 364.74 MPa could meet the basic demands of implant materials.
Bo-Hua Duan1,2，Hai-Xia Hong1,2，De-Zhi Wang1，Hui-Jiang Liu1，Xiao-Jia Dong1，Dan-Dan Liang1
1. School of Materials Science and Engineering,Central South University2. State Key Laboratory of Powder Metallurgy,Central South University
摘 要：To explore the preparation of porous nickel–titanium alloy with excellent properties, larger size and complex shape, the premixed powder of Ni and Ti with atomic ratio of 1:1 was shaped by gel-casting. The effects of solids loading and the content of dispersant on flow ability of nickel–titanium slurry and the mechanical properties of nickel–titanium sintered body were studied. The drying models under different solids loading were also discussed.The results show that the viscosity of slurries significantly increases with an increase in solids loading. After a proper process of drying, the green body with complex shape is obtained. The sintered body with porosity rate reaching up to49.5 % and compression strength reaching to 364.74 MPa could meet the basic demands of implant materials.
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