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Degradable biomedical forging-state magnesium alloy and preparation method thereof

A biomedical and magnesium alloy technology, which is applied in the field of degradable biomedical materials, can solve the problems of improving strength and performance, and achieve the effects of reducing the thickness of the diffusion layer, improving flow and diffusion, and reducing component segregation.

Active Publication Date: 2019-08-20
NANYANG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This invention improves the corrosion resistance of Mg-Zn-Y-Zr magnesium alloy through two-stage solution treatment, but there is still a lot of room for improvement in its corrosion resistance, and its strength performance also needs to be improved

Method used

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  • Degradable biomedical forging-state magnesium alloy and preparation method thereof
  • Degradable biomedical forging-state magnesium alloy and preparation method thereof
  • Degradable biomedical forging-state magnesium alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A forged magnesium alloy for biodegradable biomedical use, the mass percent composition is: 4.1% Zn, 0.23% Zr, 0.93% Y, the mass ratio of Zn / Y is 4.39, and the balance is Mg.

[0034] The preparation method of the above-mentioned degradable biomedical wrought state magnesium alloy comprises the following steps:

[0035] (1) Material preparation step: put Zn particles and master alloy into the crucible according to the ratio, and the master alloy is ZK60 and Mg-30%Y;

[0036] (2) Melting step: Introduce argon gas into the melting furnace to evacuate the air, heat the melting furnace, and preheat the crucible to 660°C to melt the magnesium alloy ingredients;

[0037] (3) Refining step: adding a refining agent to the melted magnesium ingot for refining;

[0038] (4) Stirring step: stirring the refined magnesium ingots to completely melt the magnesium alloy ingredients;

[0039] (5) Production steps: pouring, cooling, forging slabs, and rolling to obtain biomedical magnes...

Embodiment 2

[0044] A forged magnesium alloy for biodegradable biomedical use, the mass percent composition is: 4.45% Zn, 0.38% Zr, 0.75% Y, the Zn / Y mass ratio is 5.93, and the balance is Mg.

[0045] The preparation method of the above-mentioned degradable biomedical wrought state magnesium alloy comprises the following steps:

[0046] (1) Material preparation step: put Zn particles and master alloy into the crucible according to the ratio, and the master alloy is ZK60 and Mg-30%Y;

[0047] (2) Melting step: Introduce argon gas into the melting furnace to evacuate the air, heat the melting furnace, and preheat the crucible to 700°C to melt the magnesium alloy ingredients;

[0048] (3) Refining step: adding a refining agent to the melted magnesium ingot for refining;

[0049] (4) Stirring step: stirring the refined magnesium ingots to completely melt the magnesium alloy ingredients;

[0050] (5) Production steps: pouring, cooling, forging slabs, and rolling to obtain biomedical magnesiu...

Embodiment 3

[0055] A forged magnesium alloy for biodegradable biomedical use, the mass percent composition is: 5.6% Zn, 0.1% Zr, 1.26% Y, the Zn / Y mass ratio is 4.44, and the balance is Mg.

[0056] The preparation method of the above-mentioned degradable biomedical wrought state magnesium alloy comprises the following steps:

[0057] (1) Material preparation step: put Zn particles and master alloy into the crucible according to the ratio, and the master alloy is ZK60 and Mg-30%Y;

[0058] (2) Melting step: Introduce argon gas into the melting furnace to evacuate the air, heat the melting furnace, and preheat the crucible to 720°C to melt the magnesium alloy ingredients;

[0059] (3) Refining step: adding a refining agent to the melted magnesium ingot for refining;

[0060] (4) Stirring step: stirring the refined magnesium ingots to completely melt the magnesium alloy ingredients;

[0061] (5) Production steps: pouring, cooling, forging slabs, and rolling to obtain biomedical magnesium ...

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Abstract

The invention provides a degradable biomedical forging-state magnesium alloy, and belongs to the field of degradable biomedical materials. The degradable biomedical forging-state magnesium alloy is prepared from the components in percentage by mass: 3.3 to 9 percent of Zn, 0.1 to 0.6 percent of Zr, 0.75 to 2 percent of Y, and the balance Mg, wherein the mass ratio of Zn / Y is larger than 4.38 and smaller than 6. The magnesium alloy not only has a favorable magnesium alloy and good corrosion resistance, but also has favorable biocompatibility, is suitable to be used as bone repair materials suchas a porous magnesium alloy material, a plastic surgery department material, an oral cavity oral cavity implant material and a bone lamella nail, and is particularly suitable to be used as a cardiovascular stent material and a bone repair material.

Description

technical field [0001] The invention belongs to the field of degradable biomedical materials, in particular to a degradable biomedical forged magnesium alloy and a preparation method thereof. Background technique [0002] Biomedical magnesium alloy is an ideal biomedical metal implant material. Due to its advantages in biomechanical compatibility, biocompatibility, biodegradability and economic applicability, it has been favored at home and abroad in recent years. The general concern of the majority of biomaterials researchers. However, biomedical magnesium alloys corrode too quickly in the physiological environment of the human body, causing them to lose mechanical integrity and effectiveness of mechanical properties before bone healing or vascular blockage recovery, resulting in treatment failure and other adverse reactions. Therefore, it is imminent to develop high-strength, high-toughness, high-corrosion biomedical magnesium alloys and apply them clinically as soon as p...

Claims

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Application Information

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IPC IPC(8): C22C23/04C22C1/03C22C1/06
CPCC22C1/03C22C1/06C22C23/04
Inventor 马春华许东光杨浩仲志国秦怡李书义李根全卢志文
Owner NANYANG NORMAL UNIV
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