The manufacturing method of tantalum, niobium or its alloy additive includes the following steps: first prepare tantalum powder, niobium powder or its alloy powder for 3D printing: then load the prepared tantalum powder or niobium powder or its alloy powder into a 3D printer for printing, that is, prepare tantalum or niobium or its alloy metal products. The manufacturing method of the invention has the advantages of low raw material cost, simple technological process, good fluidity of the prepared powder and direct printing of metal products and artificial material implants according to the design drawing or according to the bone scan conversion pattern intercepted by the doctor, fast production process and small post-processing workload.
Niobium and tantalum are rare and high melting point metals, their melting points are 2468℃ and 2970℃ respectively, and can not be prepared by spray method. Niobium and tantalum are also very ductile metals, which can not be directly made into powder by mechanical crushing. Tantalum powder can be prepared by compound reduction, but its oxygen content is high. Niobium and tantalum have good corrosion resistance, high temperature resistance, good electrical properties, widely used in aerospace, electronic semiconductor, nuclear power, medical body implant and other high-end technology fields. However, the production process of their metal and its alloy products is complex, long and difficult, and the material yield is low. Therefore, it is very important to find a large-scale, low-cost and simple process for the production of niobium, tantalum and their alloys.
Tantalum hydride is obtained after hydrogenation of dense tantalum material, niobium hydride is obtained after hydrogenation of dense niobium material, and the hydride of alloy is obtained after hydrogenation of alloy. Dense materials include ingots, rods, plates, scraps or coarse heads. Through research and experiments, the applicant of the invention finds that metallurgical grade powder has many fine powders, complex particle shape, poor fluidity, low process success rate and high oxygen content, and is not suitable for being the optimal raw material for preparing 3D printing powder. Instead, the powder obtained by using dense materials and hydrogenation powder process has simple particle shape, good fluidity after shaping, and low impurity content (especially oxygen content). It is a high-quality 3D printing powder material.
