Laser preparing method of porous magnesium alloy for living organisms

A technology of porous magnesium and living organisms, which is applied in the field of laser preparation of porous magnesium alloys for living organisms, which can solve the problems of uneven stress and no public reports on the preparation of porous Mg-Cu alloys, and achieve the effect of increased flexibility and free design

Active Publication Date: 2019-03-26
SUZHOU UNIV
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The problem existing in the application of existing medical alloys to bone repair materials is that the density and elastic modulus of the alloys are far from those of human bones. 100 times, easy to cause uneven force
[0004] At present, the preparation methods of porous magnesium alloys mainly include casting method and powder metallurgy method, and the currently reported Mg-Cu alloys are only produced by the forging method, and the preparation of porous Mg-Cu alloys has not been publicly reported.

Method used

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  • Laser preparing method of porous magnesium alloy for living organisms

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preparation example Construction

[0026] see figure 1 Shown, a kind of laser preparation method of porous magnesium alloy for living body, comprises steps as follows:

[0027] S1. Pre-mix magnesium alloy powder and copper powder in proportion, and place the pre-mixed powder in a ball mill, and feed argon or acetone. The speed of the ball mill is selected so that the surface temperature of the ball mill tank during work does not exceed 60°C. Preferably, the ball milling time is 1 to 3 hours to ensure that the magnesium alloy powder and copper powder are fully and uniformly mixed to obtain a mixed powder.

[0028] Among them, magnesium alloy powder and copper powder are all made of high-purity powder, and the purity is greater than or equal to 99.9%. Magnesium alloy powder is one of Mg-Al alloy powder, Mg-Zn alloy powder, and Mg-Mn alloy powder. The copper powder is analytically pure copper powder. The mass ratio of copper powder to magnesium alloy powder in the mixed powder is greater than 0% and less than or...

Embodiment 1

[0034] A laser preparation method for a porous magnesium alloy for living organisms, comprising the following steps:

[0035] S1. Pre-mix Mg-Al-Zn alloy powder with a purity greater than 99.9% and copper powder at a mass ratio of 0.5%, and place the pre-mixed powder in a ball mill, feed argon or acetone, and the speed of the ball mill is 50r / min, and the ball milling time is 1h to ensure that the Mg-Al-Zn alloy powder and copper powder are fully and uniformly mixed to obtain a mixed powder.

[0036] S2, performing surface treatment on the magnesium alloy block. The magnesium alloy block is made of biomedical magnesium alloy block, and the surface of the biomedical magnesium alloy block is cleaned by using sodium hydroxide solution as a cleaning agent, then washed with clean water, and dried with cold air.

[0037] S3. According to the pore requirements of the porous magnesium alloy to be prepared, the pore diameter is greater than or equal to 150 μm, and the processing traje...

Embodiment 2

[0042] A laser preparation method for a porous magnesium alloy for living organisms, comprising the following steps:

[0043] S1. Pre-mix Mg-Zn-Zr alloy powder with a purity greater than 99.9% and copper powder at a mass ratio of 1.5%, and place the pre-mixed powder in a ball mill, feed argon or acetone, and the speed of the ball mill is 100r / min, and the ball milling time is 2h to ensure that the Mg-Zn-Zr alloy powder and copper powder are fully and uniformly mixed to obtain a mixed powder.

[0044] S2, performing surface treatment on the magnesium alloy block. The magnesium alloy block is made of biomedical magnesium alloy block, and the surface of the biomedical magnesium alloy block is cleaned by using sodium hydroxide solution as a cleaning agent, then washed with clean water, and dried with cold air.

[0045] S3. According to the pore requirements of the porous magnesium alloy to be prepared, the pore diameter is greater than or equal to 150 μm, and the processing trajec...

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Abstract

The invention provides a laser preparing method of porous magnesium alloy for living organisms. The laser preparing method comprises the following steps: S1, premixing magnesium alloy powder and copper powder by a ratio, and carrying out full mixing through after-treatment operation to obtain mixed powder; S2, carrying out surface treatment on magnesium alloy blocks; S3, setting a processing trackand the processing parameters of a laser unit according to the porosity requirements of the porous magnesium alloy needing to be prepared; and S4, carrying out laser additive processing on the magnesium alloy blocks by the laser unit according to the processing track in the step S3 to prepare the required porous magnesium alloy. By optimizing technical parameters, the porous magnesium alloy whichhas both main holes and tiny holes and at the same time has no toxic and harmful substance residues can be obtained, the method is not limited by moulds, does not need vacuum casting and can be applied to building and medicine industry, and the service life of products is greatly prolonged.

Description

technical field [0001] The invention relates to a biological material preparation method in the field of tissue engineering, in particular to a laser preparation method of a porous magnesium alloy for living organisms. Background technique [0002] The problem existing in the application of existing medical alloys to bone repair materials is that the density and elastic modulus of the alloys are far from those of human bones. 100 times, it is easy to cause uneven force. Human bone is porous. In recent years, domestic and foreign research focuses on using porous materials as implant materials, such as porous ceramics, porous titanium and porous magnesium alloys. [0003] Porous magnesium alloy is a promising material for bone tissue engineering. In recent years, research on the metabolic process of magnesium in the human body has shown that magnesium has no biological toxicity. Therefore, research on magnesium-based alloy medical materials has increased year by year. After ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/04B22F3/11C22C23/00
CPCC22C23/00B22F3/1103B22F9/04B22F2009/043
Inventor 陈长军张敏王星程
Owner SUZHOU UNIV
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