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Biological zinc alloy with fine lamellar eutectic structure and preparation method thereof

A technology of crystal structure and biological zinc, applied in the field of biological zinc alloy and its preparation, can solve the problems of insufficient mechanical properties of biological zinc alloy, and achieve the effect of excellent biocompatibility and appropriate degradation rate

Active Publication Date: 2019-01-01
JIANGXI UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the shortcomings such as insufficient mechanical properties of biological zinc alloys in the above-mentioned prior art, the object of the present invention is to provide a biological zinc alloy with a fine lamellar eutectic structure and a preparation method thereof

Method used

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  • Biological zinc alloy with fine lamellar eutectic structure and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Weigh 0.02g zirconium powder, 0.08g aluminum powder and 9.9g zinc powder respectively according to the mass ratio of 0.2:0.8:99, add the three into the ball mill jar and use the mass ratio of ball to material of 20:1 to achieve a high temperature of 99.999%. Under the protective atmosphere of pure argon, the ball milled at a speed of 350r / min for 3h to obtain zinc-aluminum-zirconium mixed powder. Using the above mixed powder as raw material, under the process conditions of laser power 65W, scanning speed 14mm / s, spot diameter 50μm, scanning distance 0.01mm, powder coating thickness 0.1mm and 99.999% high-purity argon protective atmosphere, SLM Process to prepare biological zinc alloy.

[0034] Microstructure tests found that a large number of fine and uniformly distributed lamellar zinc-aluminum eutectic structures were formed, such as figure 1 As shown in a, the lamellar spacing is 0.34 μm, and it is found through mechanical testing that the ultimate compressive stren...

Embodiment 2

[0036] Weigh 0.01g of zirconium powder, 0.08g of aluminum powder and 9.91g of zinc powder respectively according to the mass ratio of 0.1:0.8:99.1, add the three into the ball mill jar and use the mass ratio of ball to material of 20:1 to achieve a high temperature of 99.999%. Under the protective atmosphere of pure argon, the ball milled at a speed of 350r / min for 3h to obtain zinc-aluminum-zirconium mixed powder. Using the above mixed powder as raw material, under the process conditions of laser power 65W, scanning speed 14mm / s, spot diameter 50μm, scanning distance 0.01mm, powder coating thickness 0.1mm and 99.999% high-purity argon protective atmosphere, SLM Process to prepare biological zinc alloy.

[0037] The microstructure test found that after adding 0.1wt% zirconium and 0.8wt% aluminum to zinc, a small amount of fine and uniformly distributed lamellar eutectic structure was obtained, such as figure 1 As shown in b, the lamellar spacing is 0.37 μm. It is found throu...

Embodiment 3

[0039]Weigh 0.03g of zirconium powder, 0.08g of aluminum powder and 9.89g of zinc powder respectively according to the mass ratio of 0.3:0.8:98.9, add the three into the ball mill jar and use the mass ratio of ball to material of 20:1 to achieve a high temperature of 99.999%. Under the protective atmosphere of pure argon, the ball milled at a speed of 350r / min for 3h to obtain zinc-aluminum-zirconium mixed powder. Using the above mixed powder as raw material, under the process conditions of laser power 65W, scanning speed 14mm / s, spot diameter 50μm, scanning distance 0.01mm, powder coating thickness 0.1mm and 99.999% high-purity argon protective atmosphere, SLM Process to prepare biological zinc alloy.

[0040] Microstructure tests found that after adding 0.3wt% zirconium and 0.8wt% aluminum to zinc, a fine lamellar eutectic structure was obtained, such as figure 1 As shown in c, the lamellar spacing is 0.51 μm. It is found through mechanical testing that the ultimate compre...

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Abstract

The invention relates to a biological zinc alloy with a fine lamellar eutectic structure and a preparation method thereof, and belongs to the technical field of design and manufacturing of biologicalzinc alloys. The eutectic biological zinc alloy is prepared from the following components in percentage by mass: 98.9 to 99.1 percent of zinc, 0.8 percent of aluminum and 0.1 to 0.3 percent of zirconium. The preparation method comprises the following steps: taking zinc powder, aluminum powder and zirconium powder according to designed components; carrying out ball milling for 2 to 4h at the speedof 250 to 400r / min under a protection atmosphere to obtain mixed powder; preparing the zinc-aluminum-zirconium eutectic biological alloy by adopting an SLM technology under the protection atmosphere.According to the biological zinc alloy provided by the invention, an aluminum-rich phase and a zinc-rich phase in a base body are alternatively separated out and condensed, so that the lamellar eutectic structure is generated in a zinc-aluminum alloy, and the content of zirconium is increased and can further refine the lamellar eutectic structure; in addition, the characteristic of quick solidification rate of an SLM technology is applied and can inhibit nucleation growth, thus further refining the lamellar eutectic structure of the zinc alloy; the lamellar eutectic structure is formed and refined, so that the mechanical properties of the biological zinc alloy are improved, and the application of the biological zinc alloy to the field of tissue repairing is promoted.

Description

technical field [0001] The invention belongs to the technical field of design and preparation of biological materials, in particular to a biological zinc alloy with a fine lamellar eutectic structure and a preparation method thereof. Background technique [0002] The standard electrode potential of zinc is between magnesium and iron, and it has a degradation rate suitable for the growth of human bone tissue, so it is considered to be a very potential bone repair material. In addition, zinc has good biocompatibility and excellent processing performance, and can participate in many physiological processes such as human cell development and growth, gene expression, immune system and nervous system. However, the mechanical properties of zinc, especially its poor strength and toughness, are still difficult to meet the requirements of bone defect repair, which greatly limits its application. Therefore, improving the mechanical properties of zinc has become an urgent problem to be...

Claims

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Application Information

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IPC IPC(8): C22C18/04C22C1/04B22F9/04B22F3/105A61L27/04B33Y10/00B33Y80/00
CPCA61L27/047C22C1/0483C22C18/04B22F9/04B33Y10/00B33Y80/00A61L2430/02B22F2998/10B22F2009/043B22F10/00B22F10/34B22F10/366B22F10/28B22F10/36B22F10/32Y02P10/25
Inventor 帅词俊高成德
Owner JIANGXI UNIV OF SCI & TECH
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