Three-dimensional (3D) printing and manufacturing method of porous niobium parts

The invention discloses a three-dimensional (3D) printing and manufacturing method of porous niobium oxide parts. The method comprises the steps of carrying out selective laser sintering (SLS) on niobium oxide powder to form niobium oxide parts of complicate shapes; carrying out molten salt electrolysis and deoxidization by taking the oxide parts as cathodes, restoring the niobium oxide parts to niobium parts, and keeping the primary shapes, so as to obtain the porous niobium parts of complicate shapes and realize the integrated manufacturing 'metallurgy-material-device'. According to the 3D printing and manufacturing method provided by the invention, the porous niobium parts of complicate shapes can be manufactured by providing the cheap niobium oxide parts without any mould; furthermore, the 3D printing and manufacturing method has the advantages of being simple and feasible in technological process, complicate in shape, low in cost, and green to manufacture.