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A kind of biomedical porous magnesium alloy and preparation method thereof

A biomedical and porous magnesium technology, applied in the field of medical materials, can solve the problems of low mechanical properties and high cost of magnesium alloy preparation, achieve high mechanical properties, prevent and treat cardiovascular diseases, and keep clean

Active Publication Date: 2020-05-15
重庆华知光环保科技有限责任公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a porous magnesium alloy material suitable for bone tissue regeneration with lower cost and higher mechanical properties, so as to solve the problem of high preparation cost and low mechanical properties of existing magnesium alloys. low problem

Method used

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Embodiment 1

[0031] A biomedical porous magnesium alloy. In terms of weight percentage, the composition content of the biomedical porous magnesium alloy is: Zn: 4%; Y: 0.8%; Ce: 0.4%; Sr: 0.012%; Ca: 1.85 %; the rest is Mg.

[0032] The preparation method of the biomedical porous magnesium alloy comprises the following steps:

[0033] (1) Raw material preparation: use pure magnesium ingots, magnesium-zinc master alloys, magnesium-yttrium master alloys, magnesium-cerium master alloys, magnesium-strontium master alloys, and magnesium-calcium master alloys as raw materials for mechanical grinding, and calculate according to the weight percentage of the above-mentioned porous magnesium alloys Ingredients, and put into the crucible;

[0034] (2) Melting: Introduce argon gas into the melting furnace to evacuate the air, heat the melting furnace, and raise the temperature of the crucible to 750°C at a speed of 5°C / min, and keep it warm for 50min to completely melt the magnesium ingot and the int...

Embodiment 2 5

[0039] The preparation process and process parameter of embodiment two to five are identical with embodiment one, difference is that the consumption of raw material is different, see table 1 for details:

[0040] The raw material consumption table (in wt.%) of table 1 embodiment two to five

[0041] Numbering Zn Y Ce Sr Ca Mg Embodiment two 2 0.5 0.05 0.005 1.5 margin Embodiment three 3 0.65 0.1 0.010 1.7 margin Embodiment four 4.5 0.95 0.7 0.015 2 margin Embodiment five 5 1 0.85 0.02 2.5 margin

[0042] 2. Mechanical property test of biomedical porous magnesium alloy

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Abstract

The present invention relates to the technical field of medical materials, in particular to a biomedical porous magnesium alloy and a preparation method thereof. The biomedical porous magnesium alloy consists of the following components in terms of weight percentage: Zn: 2‑5wt.%; Y: 0.5‑1wt.%; Ce: 0.05‑0.85wt.%; Sr: 0.005‑0.02wt.%; Ca: 1.5‑2.5wt.%; Master alloy, magnesium-yttrium master alloy, magnesium-cerium master alloy, magnesium-strontium master alloy, and magnesium-calcium master alloy are used as raw materials, and the ingredients are calculated according to the weight percentage of the above-mentioned porous magnesium alloy, and put into a crucible; then melted, refined, Pores are made, and finally formed, and biomedical porous magnesium alloys are obtained. The tensile strength and yield strength of the biomedical porous magnesium alloy prepared by the present invention both reach more than 390 MPa, and the cost is low, which is suitable as a material for bone tissue regeneration, and solves the problem of high preparation cost and low mechanical properties of the existing magnesium alloy The problem.

Description

technical field [0001] The invention relates to the technical field of medical materials, in particular to a biomedical porous magnesium alloy and a preparation method thereof. Background technique [0002] Due to their mechanical properties, metal materials are often used in the field of biomedicine as implant substrates. At present, the most widely used metal materials in the field of biomedicine include stainless steel or titanium alloy materials, but these materials have the following disadvantages: (1) The tensile strength of stainless steel materials or titanium alloy materials is poor, so they are mechanically compatible with biological bone (2) After these metal materials are implanted into the human body, they cannot remain in the human body for a long time, so a second operation is required to remove them, which will increase the physical burden of the patient. [0003] However, magnesium alloy has the characteristics of low density, high specific strength and deg...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C23/04C22C1/03A61L27/06A61L27/54A61L27/56A61L27/58
CPCA61L27/06A61L27/54A61L27/56A61L27/58C22C1/03C22C1/06C22C1/08C22C23/04A61L2300/102A61L2300/412A61L2300/604C22C1/081
Inventor 屈一鸣
Owner 重庆华知光环保科技有限责任公司
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