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A kind of biological nd-zn alloy and preparation method thereof

A biological and alloy technology, applied in the directions of additive manufacturing, process efficiency improvement, additive processing, etc., can solve the problems of insufficient mechanical strength and low sintering density, and achieve improved mechanical properties, enhanced mechanical properties, and excellent mechanical properties. Effect

Active Publication Date: 2021-05-28
JIANGXI UNIV OF SCI & TECH
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of low sintering density and insufficient mechanical strength in laser forming zinc metal in the prior art, the present invention provides an intermetallic compound-enhanced bio-Nd-Zn with high density, excellent mechanical properties and good anti-inflammatory properties Alloy and its preparation method

Method used

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  • A kind of biological nd-zn alloy and preparation method thereof
  • A kind of biological nd-zn alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Using an electronic balance to weigh 9.2g of zinc powder with a particle size of 17 to 53 μm and 0.8g of rare earth Nd powder with a particle size of 5 to 10 μm, mix them by ball milling under the protection of high-purity argon, and control the ball milling speed so that the ball milling speed is 240r / min, the ball milling time is 1h, finally get uniform Nd-Zn alloy powder.

[0036] Put the Nd-Zn alloy powder in the laser selective melting forming system, and perform layer-by-layer laser melting and sintering according to the three-dimensional model. Firstly, spread the first layer of Nd-Zn alloy powder on the substrate of the laser selective melting forming system , scanning in the X direction of the laser in turn, and then scanning in the Y direction to obtain a single-layer sintered body, and then repeat the above scanning strategy to obtain a biological Nd-Zn alloy. The specific forming process parameters are: laser power 95W, scanning speed 230mm / s, the scanning ...

Embodiment 2

[0043] Use an electronic balance to weigh 9.5g zinc powder with a particle size of 17-53μm and 0.5g rare earth Nd powder with a particle size of 5-10μm, and ball mill the mixed powder under the protection of high-purity argon. The ball milling speed is 260r / min. The time is 1.5h, and finally a uniform Nd-Zn alloy powder is obtained by grinding.

[0044] Put the Nd-Zn alloy powder in the laser selective melting forming system, and perform layer-by-layer laser melting and sintering according to the three-dimensional model. Firstly, spread the first layer of Nd-Zn alloy powder on the substrate of the laser selective melting forming system , scanning in the X direction of the laser in turn, and then scanning in the Y direction to obtain a single-layer sintered body, and then repeat the above scanning strategy to obtain a biological Nd-Zn alloy. The specific forming process parameters are: laser power 95W, scanning speed 230mm / s, the scanning distance is 60 μm, the spot diameter i...

Embodiment 3

[0051] Use an electronic balance to weigh 9.0g of zinc powder with a particle size of 17-53μm and 1.0g of rare earth Nd powder with a particle size of 5-10μm, and ball mill the mixed powder under the protection of high-purity argon. The ball milling speed is 280r / min, and the ball milling The time is 1h, and finally a uniform Nd-Zn alloy powder is obtained by grinding.

[0052] Put the Nd-Zn alloy powder in the laser selective melting forming system, and perform layer-by-layer laser melting and sintering according to the three-dimensional model. Firstly, spread the first layer of Nd-Zn alloy powder on the substrate of the laser selective melting forming system , scanning in the X direction of the laser in turn, and then scanning in the Y direction to obtain a single-layer sintered body, and then repeat the above scanning strategy to obtain a biological Nd-Zn alloy. The specific forming process parameters are: laser power 95W, scanning speed 230mm / s, the scanning distance is 6...

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Abstract

The invention discloses a biological Nd-Zn alloy and a preparation method thereof, wherein the mass fraction of rare earth Nd is 5-10wt%, and the mass fraction of Zn is 90-95wt%, and then a three-dimensional solid implant is formed by laser selective melting technology . As an active element, the rare earth Nd can refine the grains of the zinc matrix, generate a eutectic phase at the same time, and enhance the mechanical properties of the matrix; on the other hand, the rare earth Nd can reduce the viscosity of the zinc metal in the molten state and improve the laser forming of the zinc metal. Density and forming quality. Simultaneously, the present invention forms the intermetallic compound NdZn of homogeneous dispersion distribution through the control of laser forming process 2 To further enhance the mechanical properties of the Nd-Zn alloy, the biological Nd-Zn alloy prepared by the present invention has higher mechanical strength, suitable degradation rate, and good biocompatibility and anti-inflammatory function, which is a very Potential bone repair material.

Description

technical field [0001] The invention belongs to the technical field of biological materials, in particular to a biological Nd-Zn alloy and a preparation method thereof. Background technique [0002] Degradable metals, including iron, magnesium, and zinc, not only have better mechanical properties than bioceramics and polymer materials, but also can be degraded in vivo until completely absorbed by the human body, so they have received more and more attention in recent years. Iron metal has excellent machinability and mechanical properties, but the degradation rate is too slow, which will limit the growth of new tissues, and the biocompatibility of degradation products is poor. The degradation products of magnesium metal have good biocompatibility, but the degradation rate is too fast, which may easily cause local alkalinity and hydrogen accumulation during the degradation process, which may cause complications. The electrochemical potential of zinc is between iron and magnes...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C18/00C22C1/04B22F3/105B22F10/28B33Y70/00
CPCC22C18/00C22C1/0483B33Y70/00B22F10/00B22F10/28Y02P10/25
Inventor 杨友文帅词俊彭淑平杨明立
Owner JIANGXI UNIV OF SCI & TECH
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