A laser preparation method of porous magnesium alloy for living organisms

A technology of porous magnesium and organisms, which is applied in the field of laser preparation of porous magnesium alloys for organisms, can solve the problems of uneven stress, no public reports on the preparation of porous Mg-Cu alloys, etc., and achieves the effects of increased flexibility and freedom of design.

Active Publication Date: 2022-05-17
SUZHOU UNIV
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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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  • A laser preparation 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

A laser preparation method for a porous magnesium alloy for living organisms, comprising the following steps: S1, pre-mixing magnesium alloy powder and copper powder in proportion, and fully mixing through post-processing operations to obtain a mixed powder; S2, magnesium alloy powder The block is subjected to surface treatment; S3. According to the pore requirements of the porous magnesium alloy to be prepared, the processing track and the laser processing parameters are set; S4. The laser performs laser additive processing on the magnesium alloy block according to the processing track in step S3, The desired porous magnesium alloy is obtained. By optimizing the process parameters, the present invention can obtain a porous magnesium alloy with both main pores and micropores, and at the same time, no toxic and harmful substances are left, and it is not limited by molds and does not require vacuum casting. It can be applied to construction and medical industries, and has a large Improve the service life of the product.

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 Patents(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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