▎ 摘　　要

NOVELTY - Preparing an in-situ synthesized three-dimensional graphene reinforced nickel-based composite material by 3D printing involves selecting a suitable solvent depending on the type of used organic solid carbon source to dissolve the solid carbon source. The appropriate amount of a suitable solvent is added to a mixed powder of a nickel powder having a particle diameter of 2-50 mu m and an organic solid carbon source, and mixed uniformly to obtain a precursor suspension. The precursor suspension is dried to obtain a composite precursor powder. The composite precursor powder is dried in a vacuum oven, and grounded to obtain grounded composite precursor powder. The sufficient amount of grounded composite precursor powder is placed in a powder bin of a 3D printer, and a three-dimensional graphene-reinforced nickel-based composite block is synthesized in-situ by a laser scanning method in accordance with a design shape of 3D printing. USE - Method for preparing an in-situ synthesized three-dimensional graphene reinforced nickel-based composite material by 3D printing.