Additive manufacturing orthopedic tantalum metal, preparation method and application, using laser melting or electron beam processing molding, to optimize the production parameters of powder property, laser melting parameters, equipment stability, powder quality, printing accuracy, oxygen content. Hot isostatic pressing (HIP)/ heat treatment (HT) of the molded part, and then surface treatment, can obtain high density, high performance of the molded part. The invention provides high density and high performance tantalum metal, which has stable and reliable mechanical properties after implantation to meet the complex environmental and mechanical requirements in the body, and can be combined with subsequent surface treatment to meet the requirements of different medical application scenarios.
Tantalum is a biocompatible medical material with good corrosion resistance and mechanical properties. Compared with the widely used titanium and titanium alloys, tantalum has better biocompatibility and bone induction ability, making it an ideal material for the next generation of implants. Additive manufacturing, or 3D printing, is an emerging manufacturing technology that builds materials layer by layer on the basis of digital models, and has significant advantages in combining with medical applications in terms of personalized customization and the preparation of complex structural parts. In particular, the manufactured porous structures, such as bone trabecular-like structures, can promote tissue growth and drug delivery, and can adjust mechanical properties to achieve personalized matching.
However, the melting point of tantalum metal is 2996 degrees much higher than that of titanium metal 1660 degrees, which is a new challenge for the manufacturing and processing of tantalum-based instruments, especially the parts implanted in the human body need stable and reliable mechanical properties to meet the complex environmental and mechanical requirements in the body.
Through the above analysis, the existing problems and defects of the prior art are as follows: the melting point of tantalum metal is too high, and the manufacturing and processing of instruments based on tantalum metal is a new challenge, especially the parts implanted in the human body need stable and reliable mechanical properties to meet the complex environmental and mechanical requirements in the body.
