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采用新型的泡沫浸渍法,以聚氨酯泡沫为载体制备出具有较高强度和良好生物相容性的多孔铌基材料。并借助分析天平、XRD、CS600碳硫测试仪和SEM对多孔铌的孔隙度、性能和微观结构进行了测试及观察。结果表明:制成的多孔铌,具有三维、连通孔隙结构且无任何杂质相,孔隙率为71.4%,孔径尺寸为500μm,平均密度为2.45g/cm3。三维连通多孔铌的平均弹性模量为815MPa,抗压强度为36.62MPa,与人体松质骨的力学性能相匹配。
A novel foam impregnation method was used to prepare a porous niobium-based material with high strength and good biocompatibility based on polyurethane foam. The porosity, properties and microstructure of porous niobium were tested and analyzed with analytical balance, XRD, CS600 carbon and sulfur tester and SEM. The results show that the prepared porous niobium has a three-dimensional, connected pore structure without any impurity phase, with a porosity of 71.4%, a pore size of 500 μm and an average density of 2.45 g / cm 3. The three-dimensional interconnected porous niobium has an average elastic modulus of 815 MPa and a compressive strength of 36.62 MPa, which matches the mechanical properties of human cancellous bone.