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Preparation method for biological porous magnesium alloy

A technology of porous magnesium and magnesium alloys, which is applied in the field of preparation of biological porous magnesium alloys, can solve problems such as environmental pollution and harmful substance residues, and achieve high controllability, high processing efficiency, and favorable quality control effects

Inactive Publication Date: 2017-03-22
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] In view of this, the purpose of the present invention is to provide a preparation method of biological porous magnesium alloy, which is prepared by direct laser melting, abandons the traditional method of sintering or vapor deposition by adding pore-forming agent to powder, and solves the problem of recycling magnesium alloy waste. The problem of utilization, and at the same time further solve the problems of environmental pollution and harmful substance residues caused by the traditional method of preparation

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  • Preparation method for biological porous magnesium alloy
  • Preparation method for biological porous magnesium alloy
  • Preparation method for biological porous magnesium alloy

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preparation example Construction

[0039] The present invention is aimed at the deficiencies in the prior art, see figure 1 As shown, a method for preparing a bioporous magnesium alloy is provided, and the bioporous magnesium alloy is obtained by melting layer by layer with a laser, which avoids the occurrence of the above adverse situations. Specifically include the following steps:

[0040] S1. According to the shape of the porous magnesium alloy to be prepared, establish the geometric model of the porous magnesium alloy formed by the multi-layer structure, and use the computer to calculate the established geometric model to obtain the dimensional data, the number of layers to be processed and the processing trajectory . The dimensional data includes the pore diameter required by the porous magnesium alloy, the regularity of spatial arrangement and the size of the gap between the pores. The pore diameter of the porous magnesium alloy prepared in the present invention is φ20-500 μm.

[0041] S2, performing s...

Embodiment 1

[0049] S1. According to the shape of the porous magnesium alloy to be prepared, establish the geometric model of the porous magnesium alloy formed by the multi-layer structure, and use the computer to calculate the established geometric model to obtain the dimensional data, the number of layers to be processed and the processing trajectory . The dimensional data includes the required pore size of the porous magnesium alloy, the regularity of spatial arrangement and the size of the gap between the pores. The pore size of the porous magnesium alloy prepared in this example is φ20 μm.

[0050] S2, performing surface treatment on the magnesium alloy block. The porous magnesium alloy prepared by the invention is mainly used in the medical industry, so the original raw material of the magnesium alloy block is a biomedical magnesium alloy. The surface treatment step is specifically to use sodium hydroxide solution as a cleaning agent to clean the surface of the biomedical magnesium ...

Embodiment 2

[0056] The difference between this example and Example 1 is that the pore diameter of the prepared porous magnesium alloy is φ100 μm, the laser used is a solid-state laser with a wavelength of 900 nm, and the laser processing parameters are set as follows: laser spot φ100 μm, laser energy 150 W, scanning The spacing is 0.4mm, the pulse width is 0.6ms, and the frequency is 40Hz.

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Abstract

The invention discloses a preparation method for a biological porous magnesium alloy. The preparation method comprises the following steps: S1, establishing a geometric model and a machining track according to dimension data of the porous magnesium alloy which is required to be prepared; S2, conducting surface treatment on a magnesium alloy block body; S3, setting laser machining parameters of a laser; S4, conducting surface machining on the magnesium alloy block body according to the machining track which is set in S1 to obtain a plurality of pores required by one direction of the magnesium alloy block body; S5, rotating the magnesium alloy block body by 90 degrees, and executing the S4 again until a plurality of pores in each direction of the magnesium alloy block body are all completed; S6, conducting drying treatment and storing the porous magnesium alloy obtained in the S5. According to the preparation method for the biological porous magnesium alloy, the magnesium alloy is molten directly by adopting the laser, so that the biological porous magnesium alloy is prepared; the conventional method of adding a pore-forming agent for performing sintering or vapour deposition by utilizing powder is abandoned; the problem of recycling a magnesium alloy waste material is solved; and meanwhile, the problems of environmental pollution and harmful material residues caused by preparing by the conventional method are also solved.

Description

technical field [0001] The invention relates to the technical field of biological material preparation, in particular to a preparation method of biological porous magnesium alloy. Background technique [0002] With the rapid development of social economy, more and more fractures are caused by traffic accidents, industrial injuries and various accidents, and the damage energy is also getting higher and higher. In order to achieve satisfactory reduction and effective fixation, reduce the disability rate caused by fractures, and maximize the recovery of limb functions, open or closed reduction and internal fixation surgery has become an important method for the treatment of fractures, and it is more and more widely used clinically. . In order to cooperate with the operation, metal internal fixation materials are used as implants. These metal internal fixation materials can assist in the repair and replacement of diseased or damaged bone tissue, playing a pivotal and irreplacea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/08
CPCC22C1/08
Inventor 陈长军张敏刘畅任博郑祖山胡增荣王晓南
Owner SUZHOU UNIV
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