A kind of reduced graphene oxide reinforced zinc-based medical material and preparation method thereof

Abstract

The invention discloses a zinc-based medical material reinforced by reduced graphene oxide, which is composed of a zinc matrix and reduced graphene oxide, wherein the mass percentage of the reduced graphene oxide is 0.05-0.2 wt%. On the one hand, reduced graphene oxide with excellent mechanical properties is used as the second phase to strengthen the zinc matrix; on the other hand, the characteristics of rapid solidification of laser selective melting and the excellent thermal conductivity of reduced graphene oxide are used to achieve rapid cooling of tiny molten pools , so as to obtain a fine and uniform structure, and further enhance the mechanical properties of the zinc matrix through fine-grain 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 ...