Reduced graphene oxide reinforced zinc-based medical material and preparation method thereof

Abstract

The invention discloses a reduced graphene oxide reinforced zinc-based medical material. The reduced graphene oxide reinforced zinc-based medical material is composed of a zinc base body and reduced graphene oxide, wherein the mass percentage of the reduced graphene oxide accounts for 0.05-0.2% by weight. On one hand, the reduced graphene oxide excellent in mechanical performance is adopted as a second phase reinforced zinc base body; and on the other hand, the characteristics that selective laser melting can achieve fast solidification and the reduced graphene oxide is excellent in heat-conducting property are utilized, and a tiny molten pool can be cooled rapidly, so that a fine and uniform structure is obtained; and the mechanical performance of the zinc base body is further enhanced through refined crystalline strengthening.

Description

technical field

[0001] The invention belongs to the technical field of biological materials, and in particular relates to a reduced graphene oxide reinforced zinc-based medical material and a preparation method thereof. Background technique

[0002] Zinc metal is a very promising material for bone repair. First of all, zinc is one of the essential trace elements for the human body. It participates in the metabolic process of the human body in large quantities and has good biocompatibility. Secondly, zinc metal can degrade in the form of self-corrosion in the human environment (standard potential ~-0.76V), and the degradation rate matches the growth rate of bone tissue, showing unique advantages in biodegradation. However, the mechanical properties of zinc metal are insufficient to meet the application requirements of clinical bone repair, especially in load-bearing bone.

[0003] Reduced graphene oxide has excellent mechanical properties, its fracture strength and elastic ...