Orthopedic implanted magnesium alloy material and preparation method thereof

A magnesium alloy, orthopedic technology, applied in the field of alloys, can solve the problems of unsafe, human health hazards of aluminum elements, etc., and achieve the effect of good bearing capacity

Inactive Publication Date: 2018-07-17
王甲林
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, research on medical titanium alloys has shown that aluminum can be harmful to human health
Therefore, magnesium alloys containing aluminum are not safe for the human body

Method used

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  • Orthopedic implanted magnesium alloy material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A magnesium alloy material for orthopedic implantation, characterized in that: by weight percentage, the chemical composition is: Zn 1.5%, Mn 0.6%, Ca 0.3%, Si 0.3%, Sn 0.5%, Li 1%, Cr 2.5%, Mo 1.3%, Sc+La+Y: 0.01%, Ti 0.5%, the balance is Mg and unavoidable impurity elements, wherein the mass ratio of Sc, La, Y is 7:2:1.

[0043] The preparation method of the orthopedic implant magnesium alloy material,

[0044] (1) Ingredients: According to the composition design required by the magnesium alloy, the ingredients are first carried out, and the Mg-Zn master alloy is selected. The Mg:Zn mass ratio in the Mg-Zn master alloy is 0.8-0.82:1; the Mg-Sn master alloy is selected, The mass ratio of Mg:Sn is 0.085-0.087:1; the Mg-Si master alloy is selected, wherein the mass ratio of Mg:Si is 48-49:1, and other low-melting point elements are in the form of pure metal with a purity of 99.99% and / or low melting point Added in the form of master alloy;

[0045] (2) Alloy smelting: ...

Embodiment 2

[0051] A magnesium alloy material for orthopedic implantation, characterized in that: the chemical composition by weight percentage is: Zn 2%, Mn 1%, Ca 0.5%, Si 0.35%, Sn 0.55%, Li 1.5%, Cr 2.8%, Mo 1.3 %, Sc+La+Y: 0.01%, Ti0.6%, the balance is Mg and unavoidable impurity elements. Wherein the mass ratio of Sc, La and Y is 7:2:1. The preparation method of the orthopedic implant magnesium alloy material,

[0052] (1) Ingredients: According to the composition design required by the magnesium alloy, the ingredients are first carried out, and the Mg-Zn master alloy is selected. The Mg:Zn mass ratio in the Mg-Zn master alloy is 0.8-0.82:1; the Mg-Sn master alloy is selected, The mass ratio of Mg:Sn is 0.085-0.087:1; the Mg-Si master alloy is selected, wherein the mass ratio of Mg:Si is 48-49:1, and other low-melting point elements are in the form of pure metal with a purity of 99.99% and / or low melting point Added in the form of master alloy;

[0053] (2) Alloy smelting: Prehea...

Embodiment 3

[0059] A magnesium alloy material for orthopedic implantation, characterized in that: the chemical composition by weight percentage is: Zn 3%, Mn 1.1%, Ca 0.8%, Si 0.45%, Sn 0.85%, Li 1.8%, Cr 3.5%, Mo 1.4%, Sc+La+Y: 0.08%, Ti 0.8%, the balance is Mg and unavoidable impurity elements. Wherein the mass ratio of Sc, La and Y is 7:2:1. The preparation method of the orthopedic implant magnesium alloy material,

[0060] (1) Ingredients: According to the composition design required by the magnesium alloy, the ingredients are first carried out, and the Mg-Zn master alloy is selected. The Mg:Zn mass ratio in the Mg-Zn master alloy is 0.8-0.82:1; the Mg-Sn master alloy is selected, The mass ratio of Mg:Sn is 0.085-0.087:1; the Mg-Si master alloy is selected, wherein the mass ratio of Mg:Si is 48-49:1, and other low-melting point elements are in the form of pure metal with a purity of 99.99% and / or low melting point Added in the form of master alloy;

[0061] (2) Alloy smelting: Preh...

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Abstract

An orthopedic implanted magnesium alloy material is characterized by comprising the following chemical components by weight: 1.5-3% of Zn, 0.6-1.1% of Mn, 0.3-0.8% of Ca, 0.3-0.45% of Si, 0.5-0.85% ofSn, 1-1.8% of Li, 2.5-3.5% of Cr, 1.3-1.4% of Mo, 0.01-0.08% of Sc+La+Y, 0.5-0.8% of Ti, and balance of Mg and unavoidable impurity elements. The magnesium alloy has a yield strength equal to or greater than 380 MPa, a tensile strength equal to or greater than 420 MPa, an elongation equal to or greater than 18.8%, and a sterilization rate equal to or greater than 92% which are significantly higher than that of other products lacking alloying elements, and significantly higher than that of similar products without surface coating.

Description

technical field [0001] The invention belongs to the field of alloys, and particularly provides a magnesium alloy material for orthopedic implantation. Background technique [0002] In medical bone repair and bone implant materials, stainless steel and titanium-titanium alloys have become widely used materials because of their excellent mechanical properties, biocompatibility and corrosion resistance. However, the mechanical properties of stainless steel and titanium alloys do not match bone tissue, especially the elastic modulus, for example: the elastic modulus of stainless steel is about 200GPa, the elastic modulus of titanium alloy is about 100GPa, and the elastic modulus of bone tissue is about 10-40GPa. Thus, the implant takes almost the entire load. This creates "stress shielding" during use, causing atrophy or loosening of the bone tissue surrounding the implant. At the same time, stainless steel and titanium alloy bone nails, bone plates and other implants require...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/00C22C1/03C22F1/06C23C22/34A61L27/50A61L27/32A61L27/04A61L31/14A61L31/08A61L31/02
CPCC22C23/00A61L27/047A61L27/32A61L27/50A61L31/022A61L31/086A61L31/14A61L2420/02A61L2420/08A61L2430/02C22C1/03C22F1/06C23C22/34
Inventor 王甲林
Owner 王甲林
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