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A multi-component degradable magnesium alloy material and its preparation method and application

A magnesium alloy, multi-component technology, applied in the field of degradable magnesium alloy materials and its preparation, to achieve the effects of avoiding local failure, promoting bone growth, and promoting antibacterial properties

Active Publication Date: 2022-03-08
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Technical problem: The purpose of the present invention is to provide a multi-component degradable magnesium alloy material and its preparation method and application, to overcome the difficulty of a single component material for local performance and multi-functional requirements, and to achieve the mechanical properties of the material, The mutual matching between degradation rate and functionalization meets the requirements of the service environment of biomaterials on the mechanical properties, degradation rate and functionalization of magnesium alloys

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  • A multi-component degradable magnesium alloy material and its preparation method and application
  • A multi-component degradable magnesium alloy material and its preparation method and application
  • A multi-component degradable magnesium alloy material and its preparation method and application

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Embodiment 1

[0029] A degradable magnesium alloy material composed of multiple components, which is used to prepare cortical bone screws with multiple components (such as figure 2 As shown), according to actual needs, the bone screw body is wrapped inside the bone tissue, the strength of the screw thread needs to be increased, the toughness of the screw body must be improved, and the stress corrosion resistance must be improved, and it can also release the growth-promoting bone tissue Elements; because the nail head is in contact with soft tissue, under the premise of ensuring the required strength of the material, it is necessary to improve the corrosion resistance; in order to have a better fixing effect, it should also have a certain antibacterial ability. Therefore, the determined element requirements are: Mg, Zn, Zr, Cu, Mn, Sr, Y; according to the screw preparation sequence, the material is selectively supplied, and the alloy composition at the nail head is Mg-2Y-Zn-0.3Cu alloy. The...

Embodiment 2

[0035] A multi-component degradable magnesium alloy material, which is used to prepare a multi-component porous bone repair material (such as image 3 As shown), according to the actual needs, the degradable porous magnesium filling material is wrapped inside the tissue. Since the edge of the porous magnesium is the first and the longest to contact body fluids, the corrosion resistance of the edge of the material should be improved, and the inner part is the main mechanical property. The load-bearing part, so the internal structure should properly improve the mechanical properties, so that the tissue can grow smoothly and evenly degrade in the end. Therefore, the element requirements are determined as: Mg, Zn, Zr, Mn, Sr; according to the preparation sequence of the porous bone repair material, Selective feeding, the composition of the edge of the porous bone repair material is Mg-2Zn-0.5Sr alloy, a small amount of Sr element can be added to promote the growth of bone cells; th...

Embodiment 3

[0041] A degradable magnesium alloy material composed of multiple components, which is used to prepare skin staples with multiple components (such as Figure 4As shown), according to actual needs, skin staples need to have higher hardness and strength at the nail tip and higher strength and toughness at the nail leg. Better corrosion resistance is required; because the nail beam has to bear the force of the stapler hitting the nailed tissue, the strength needs to be increased, but the corrosion resistance is not high, so the determined element requirements are: Mg, Al, Zn, Zr, Mn, Nd; According to the order of staple preparation, the materials are selectively supplied. The alloy composition at the nail tip is Mg-2Zn-Nd-0.5Zr; the nail leg stem is Mg-2Zn-0.3Mn alloy, and the nail leg The joint and nail beam are Mg-3Al-Zn-0.5Nd alloy.

[0042] Its preparation method is as follows:

[0043] 1) Powder preparation: place the Mg, Al, Zn, Zr, Mn, and Nd powders required in the magn...

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Abstract

The invention discloses a multi-component degradable magnesium alloy material and its preparation method and application. The magnesium alloy material is formed by stacking a plurality of magnesium alloy layers with different compositions. The composition difference means that the added elements in the magnesium alloy are different. Or add the same elements but add different concentrations. The preparation method is as follows: 1) Determine the type of required ingredients, place the pure metal powder in different powder bins of the laser fusion printer; 2) control the amount of pure metal powder for each element, put the powder into the mixing bin and then fully mechanically mix Then send it into the powder supply tank; 3) Laser melt and layer-by-layer print the powder supply in the powder supply tank to obtain a degradable magnesium alloy material with corresponding shape and size and multi-component composition. The material is used as a medical implantable material for preparing bone repair or supporting material. The invention realizes the mutual matching among the mechanical properties, degradation rate and functionalization of materials, and meets the requirements of the service environment of biological materials on the mechanical properties, degradation rate and functionalization of magnesium alloys.

Description

technical field [0001] The present invention relates to a multi-component degradable magnesium alloy material and its preparation method and application, belonging to the technical field of biomedical materials. Background technique [0002] In recent years, due to the degradability of magnesium alloy in the human body, it has become a new type of medical implantable material. Compared with traditional titanium alloy materials, degradable magnesium alloy has degradability and lower elastic modulus. (41-45GPa), compared with polymer materials, it has better mechanical properties, and at the same time has good biocompatibility, without secondary surgery, and has attracted much attention in the field of biomedical materials. Among them, in terms of medical devices, the most promising materials are the restoration and replacement of hard tissues such as teeth and joints. However, due to the low strength of magnesium alloys and the rapid corrosion of local areas during the degrad...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/105B22F7/02C22C23/02C22C23/04C22C23/06A61L27/04A61L27/58A61L31/02A61L31/14B33Y10/00B33Y80/00
CPCB22F7/02C22C23/06C22C23/04C22C23/02A61L27/04A61L27/58A61L31/022A61L31/148B33Y10/00B33Y80/00A61L2430/02B22F10/00B22F10/66B22F10/34B22F10/36B22F10/28B22F10/32Y02P10/25
Inventor 白晶张越薛烽程兆俊周健
Owner SOUTHEAST UNIV
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