Laser 3D-printing silicon carbide ceramic-aluminum composite material and preparation method thereof

The invention discloses a laser 3D-printing silicon carbide ceramic-aluminum composite material. The composite material is prepared from, by volume, 50%-75% of silicon carbide particles, 3%-10% of a binder and 15%-47% of an aluminum alloy matrix. The composite material is characterized in that a silicon carbide porous ceramic preform is formed through laser 3D-printing of the silicon carbide particles and the binder and is filled with an aluminum alloy; the particle size of the silicon carbide particles ranges from 10 [mu]m to 50 [mu]m; and the binder is aluminum powder with the particle sizeranging from 5 [mu]m to [40]mu m. According to the composite material, the porous ceramic preform is prepared with the selective laser sintering 3D-printing technology, the problems that traditional preparation methods are long in technological process, complex in procedure, high in cost and the like are solved, the internal structure of the material is uniform, the size precision of the materialis higher, and the structure stability and the performance reliability of the material are improved remarkably.