CORROSION-RESISTANT, HIGH STRENGTH AND DUCTILITY ZN-FE-LI ZINC ALLOY DEGRADABLE BY THE HUMAN BODY AND APPLICATIONS OF THE ALLOY

摘要

A corrosion-resistant, high strength and ductility Zn-Fe-Li zinc alloy degradable by the human body, related to the field of medical implant materials. Provided with respect to a shortcoming found in the prior art is the corrosion-resistant and high strength and ductility Zn-Fe-Li zinc alloy that has inexpensive additive material costs, high strength, great plasticity, controllable degradation rate, non-expanding and non-migrating degradation products, and at the same time can be degraded by the human body. The zinc alloy comprises elements Zn, Fe, and Li, where the mass percentage of element Zn is: 80-99.997%, the mass percentage of element Fe is: 0.002-10%, and the mass percentage of element Li is: 0.001-10%. Costs for additive materials in the zinc alloy are inexpensive, degradation products from the components of the alloy material prepared can be metabolically degraded by the human body, the corrosion resistance is far higher than that of a magnesium alloy, the rate of degradation is greatly reduced, extended period of mechanical support is provided, and the alloy is provided with great strength and ductility.