Porous niobium titanium alloy material and a preparation method thereof, in particular relates to a porous niobium titanium alloy material for medical implantation and a preparation method thereof, belonging to the field of porous alloy materials for medical use. The invention discloses a porous niobium titanium alloy material for medical implantation. In the porous niobium titanium alloy material, the mass ratio of niobium to titanium is (9:1) ~ (1:3), the compressive strength is 47.6-109.3MPa, the elastic modulus is 0.21-0.46gpa, the aperture is 400~500μm, and the porosity is 40~80%. The invention also discloses a preparation method for the porous niobium titanium alloy material. The elastic modulus of the porous niobium titanium alloy material implanted for medical use is closer to the elastic modulus of human bone and has excellent biocompatibility.
Biological materials, also known as biomedical materials, are mainly used to replace damaged or missing human tissue structure, to achieve the purpose of repairing the appearance and performance of tissues. Niobium and titanium have good mechanical compatibility, strong corrosion resistance and excellent biocompatibility, and are widely used in the field of bone tissue replacement. At present, the mismatch between the elastic modulus of medical titanium alloy implants and human bone is easy to lead to the "stress masking" effect in clinical application. In addition, the low wear resistance of titanium alloy implants in the complex environment of human body restricts the product life, and the above factors ultimately lead to implantation failure. The development of porous niobium alloy can reduce the elastic modulus of alloy implants, avoid the "stress mask" effect, the unique pore structure is conducive to the adhesion and proliferation of osteoblasts, and niobium metal has good wear resistance, so porous niobium alloy has broad prospects for medical application.
At present, several preparation methods of porous alloy are widely used at home and abroad, including casting, metal deposition, fiber metallurgy and powder metallurgy. The impregnation method was first applied by the preparation of porous ceramics and glass, and in recent years it has been used more and more for the preparation of porous alloys. Compared with other methods, the impregnation method has the advantages of simple operation, low equipment requirements, high porosity, high controllable degree of pore size, three-dimensional connected porosity similar to human bone, and easy preparation of complex shape implants, which is conducive to the development of personalized implants.
