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A kind of degradable biomedical zn-cu-ag-zr series zinc alloy and preparation method thereof

A zn-cu-ag-zr, zinc alloy technology is applied in the field of degradable biomedical Zn-Cu-Ag-Zr series zinc alloy and its preparation, and can solve the problem of poor mechanical properties of pure zinc, low level of implant material Mechanical properties standards and other issues, to achieve excellent mechanical properties, reduce the probability of inflammation and infection symptoms, and reduce production costs.

Active Publication Date: 2022-03-22
NANCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the mechanical properties of pure zinc are poor. The tensile strength of cast pure zinc does not exceed 30MPa, and the elongation does not exceed 3%, which is far below the mechanical performance standards of implant materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A biodegradable zinc alloy for biomedical use, the mass percentage of its components is: Cu 3.0%, Ag 1.5%, Zr 0.1%, and the balance is Zn. The preparation steps are as follows:

[0027] (1) According to the mass percentage of the degradable biomedical zinc alloy composition, the proportioning is carried out with pure metal zinc, pure metal copper, pure metal silver and copper-zirconium master alloy;

[0028] (2) in CO 2 and SF 6 In a mixed atmosphere, heat pure metal zinc to 700°C, add pure metal copper, pure metal silver and copper-zirconium master alloy respectively after it melts, keep it warm for a period of time, stir until it is completely melted, and mix the evenly mixed The alloy melt is cooled to 500°C with the furnace, and poured into a graphite mold preheated to 250°C to obtain an alloy ingot;

[0029] (3) Homogenize the alloy ingot obtained in step (2), the heating temperature is 380°C, the holding time is 6h, and the alloy ingot after heat preservation is...

Embodiment 2

[0033] A degradable biomedical zinc alloy, the mass percent of its components are: Cu 2.0%, Ag 0.8%, Zr 0.2%, the balance is Zn, the preparation steps are as follows:

[0034] (1) According to the mass percentage of the degradable biomedical zinc alloy composition, the proportioning is carried out with pure metal zinc, pure metal copper, pure metal silver and copper-zirconium master alloy;

[0035] (2) in CO 2 and SF 6 In a mixed atmosphere, heat pure metal zinc to 680°C, add pure metal copper, pure metal silver and copper-zirconium master alloy respectively after it melts, keep it warm for a period of time, stir until it is completely melted, and mix the evenly mixed The alloy melt is cooled to 480°C with the furnace, and poured into a graphite mold preheated to 250°C to obtain an alloy ingot;

[0036] (3) Homogenize the alloy ingot obtained in step (2), the heating temperature is 350°C, the holding time is 6h, the alloy ingot after heat preservation is water-cooled to room...

Embodiment 3

[0040] A degradable biomedical zinc alloy, the mass percent of its components are: Cu 2.0%, Ag 1.2%, Zr0.8%, the balance is Zn, the preparation steps are as follows:

[0041] (1) According to the mass percentage of the degradable biomedical zinc alloy composition, the proportioning is carried out with pure metal zinc, pure metal copper, pure metal silver and copper-zirconium master alloy;

[0042] (2) in CO 2 and SF 6 In a mixed atmosphere, heat pure metal zinc to 680°C, add pure metal copper, pure metal silver and copper-zirconium master alloy respectively after it melts, keep it warm for a period of time, stir until it is completely melted, and mix the evenly mixed The alloy melt is cooled to 480°C with the furnace, and poured into a graphite mold preheated to 250°C to obtain an alloy ingot;

[0043] (3) Homogenize the alloy ingot obtained in step (2), the heating temperature is 380°C, the holding time is 6h, and the alloy ingot after heat preservation is water-cooled to r...

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Abstract

The invention relates to a degradable biomedical Zn-Cu-Ag-Zr zinc alloy and a preparation method thereof, belonging to the field of degradable biomedical materials. The composition of the zinc alloy is proportioned according to mass percentage, and the mass percentage is Cu1.0~ 3.0%, Ag0.1-1.5%, Zr0.1-1.5%, and the balance is Zn. By adjusting the ratio of each component in the alloy and the process parameters of the subsequent plastic deformation, the present invention enables the prepared biodegradable biomedical zinc alloy to obtain good biocompatibility, corrosion resistance and mechanical properties, basically reaching the desired level of the implanted material. required performance standards.

Description

technical field [0001] The invention relates to the field of degradable biomedical materials, in particular to a degradable biomedical Zn-Cu-Ag-Zr series zinc alloy and a preparation method thereof. Background technique [0002] At present, the commonly used medical metal implant materials mainly include stainless steel, titanium alloy and cobalt-based alloy, etc. These materials have good strength and plasticity, and are not easy to corrode in the human body; however, long-term implantation of these materials will have adverse effects on the human body. Therefore, a second operation is required to take out the implant, which causes secondary damage to the patient's body on the one hand, and increases the economic burden of the patient on the other hand. [0003] In order to avoid the above-mentioned problems, degradable biomedical materials have emerged as the times require. Degradable biomedical metal material is a kind of material that can slowly degrade in the human bod...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C18/00C22C18/02C22C1/03C22F1/16
CPCC22C18/00C22C18/02C22C1/03C22F1/165
Inventor 金华兰李旺赖勇来郭洪民杨湘杰
Owner NANCHANG UNIV