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Powder for laser 3D printing degradable magnesium alloy bone plate and preparation method

A 3D printing and magnesium alloy technology, which is applied in the field of laser 3D printing, can solve the problems of room temperature forming and poor corrosion resistance, limit the application of magnesium alloys, limit the secondary processing of magnesium alloy plates, etc., achieve a high degree of flexibility, reduce pain and Economical pressure, the effect of overcoming poor forming at room temperature

Pending Publication Date: 2022-04-01
SHENYANG POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, magnesium alloys have a hexagonal close-packed structure, poor room temperature forming and corrosion resistance, which limit the application of magnesium alloys
In addition, the orientation of magnesium alloys in the process of plastic deformation and recrystallization makes magnesium alloy sheets exhibit mechanical property anisotropy and strong basal texture characteristics, which further limits the secondary processing of magnesium alloy sheets.

Method used

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  • Powder for laser 3D printing degradable magnesium alloy bone plate and preparation method
  • Powder for laser 3D printing degradable magnesium alloy bone plate and preparation method
  • Powder for laser 3D printing degradable magnesium alloy bone plate and preparation method

Examples

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Effect test

Embodiment 1

[0056] A kind of powder used for laser 3D printing degradable magnesium alloy bone plate, the powder used for laser 3D printing degradable magnesium alloy bone plate includes Mg powder, Zn powder and Mn powder, the mass fraction of Mg powder is 98.8%; the mass fraction of Zn powder The fraction is 1%; the mass fraction of Mn powder is 0.2%. The purity of Mg powder, Zn powder and Mn powder is ≥99.9%, the particle size is 30-80μm, the oxygen content is ≤100ppm, and the humidity is ≤0.2%.

[0057] A method for laser 3D printing of degradable magnesium alloy bone plates using powder materials used in laser 3D printing degradable magnesium alloy bone plates:

[0058] Step 1, using a CNC wire cutting machine to process a magnesium plate with a purity greater than or equal to 99.9 wt% into a thickness of 2 cm and use it as a substrate;

[0059] Step 2. The surface of the substrate is made of 60 # 、100 # 、240 # 、320 # 、500 # SiC metallographic sandpaper is polished to remove the...

Embodiment 2

[0068] A kind of powder used for laser 3D printing degradable magnesium alloy bone plate, the powder used for laser 3D printing degradable magnesium alloy bone plate includes Mg powder, Zn powder and Mn powder, the mass fraction of Mg powder is 97.8%; the mass fraction of Zn powder The fraction is 2%; the mass fraction of Mn powder is 0.2%. The purity of Mg powder, Zn powder and Mn powder is ≥99.9%, the particle size is 30-80μm, the oxygen content is ≤100ppm, and the humidity is ≤0.2%.

[0069] A method for laser 3D printing of degradable magnesium alloy bone plates using powder materials used in laser 3D printing degradable magnesium alloy bone plates:

[0070] Step 1, using a CNC wire cutting machine to process a magnesium plate with a purity greater than or equal to 99.9 wt% into a thickness of 3 cm and use it as a substrate;

[0071] Step 2. The surface of the substrate is made of 60 # 、100 # 、240 # 、320 # 、500 # SiC metallographic sandpaper is polished to remove the...

Embodiment 3

[0080] A kind of powder used for laser 3D printing degradable magnesium alloy bone plate, the powder used for laser 3D printing degradable magnesium alloy bone plate includes Mg powder, Zn powder and Mn powder, the mass fraction of Mg powder is 95.8%; the mass fraction of Zn powder The fraction is 4%; the mass fraction of Mn powder is 0.2%. The purity of Mg powder, Zn powder and Mn powder is ≥99.9%, the particle size is 30-80μm, the oxygen content is ≤100ppm, and the humidity is ≤0.2%.

[0081] A method for laser 3D printing of degradable magnesium alloy bone plates using powder materials used in laser 3D printing degradable magnesium alloy bone plates:

[0082] Step 1, using a CNC wire cutting machine to process a magnesium plate with a purity greater than or equal to 99.9 wt% into a thickness of 4 cm and use it as a substrate;

[0083] Step 2. The surface of the substrate is made of 60 # 、100 # 、240 # 、320 # 、500 # SiC metallographic sandpaper is polished to remove the...

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Abstract

The invention relates to powder for laser 3D printing of a degradable magnesium alloy bone plate and a preparation method of the powder. The powder for laser 3D printing of the degradable magnesium alloy bone plate comprises, by mass, 92.5-99% of Mg powder; the mass fraction of the Zn powder is 0.5-7%; and the mass fraction of the Mn powder is 0.1-0.5%. The method for laser 3D printing of the degradable magnesium alloy bone plate through the powder comprises the steps that a base plate is machined; polishing the surface of the substrate; sand blasting; cleaning and drying; mixing the powder materials; spreading the powder; first laser beam scanning irradiation; the second laser beam is re-scanned and irradiated according to the first laser beam path; and the height of the base plate is reduced, powder laying and laser beam scanning irradiation are repeated, and the degradable magnesium alloy bone plate is prepared. The powder and the method can be used for preparing the degradable magnesium alloy bone plate. The preparation method has the characteristics that the flexibility degree of the manufacturing process is high, the product production period is short, the production cost is low, and parts with complex structures can be produced.

Description

technical field [0001] The invention belongs to the field of laser 3D printing, and in particular relates to a powder used in laser 3D printing degradable magnesium alloy bone plates and a preparation method. Background technique [0002] Magnesium alloys have good biocompatibility, mechanical compatibility and degradability, and have received more and more attention in the field of biomedical implant materials in recent years. However, magnesium alloys have a hexagonal close-packed structure, poor room temperature forming and corrosion resistance, which limit the application of magnesium alloys. In addition, the orientation of magnesium alloys in the process of plastic deformation and recrystallization makes magnesium alloy sheets exhibit anisotropy in mechanical properties and strong basal texture characteristics, which further limits the secondary processing of magnesium alloy sheets. Therefore, in order to take advantage of the advantages of magnesium alloys in the fiel...

Claims

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Application Information

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IPC IPC(8): C22C23/04C22C23/00B22F10/28A61L27/04A61L27/58B33Y10/00B33Y70/00B33Y80/00
Inventor 吴臣亮赵特许桐舟王建平张松张春华
Owner SHENYANG POLYTECHNIC UNIV
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