| abstract |
The invention relates to an intragranular-intergranular composite reinforced biological zinc alloy and a preparation method thereof, and belongs to the technical field of biological material design and preparation. The biological zinc alloy is composed of graphene, nano-silicon carbide and zinc matrix: the graphene encapsulates the nano-silicon carbide particles in an onion shape, and at the same time, some of the graphene-encapsulated nano-silicon carbide particles are engulfed into the interior of the zinc grains, while other The nano-silicon carbide particles are segregated in the intergranular, so as to realize the uniform distribution of the nano-ceramic particles in and between the crystals of the zinc matrix. The preparation method is batch cryogenic ball milling + selective laser melting. When the obtained product is used as an implant, it can repair bone defects very well. The invention has reasonable component design, simple and controllable preparation process, and excellent performance of the obtained product. |