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Biomedical degradable magnesium-based bulk amorphous alloy and preparation method thereof

An amorphous alloy and biomedical technology, which is applied in the field of biomedical degradable Mg-Zn-Ca-Sr bulk amorphous alloy and its preparation, can solve the problems of limiting the application of magnesium-based amorphous alloy, etc., and achieves mobility Good, good mechanical properties, morphologically healthy effect

Inactive Publication Date: 2014-09-03
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most Mg-based amorphous alloys with excellent amorphous-forming ability contain highly biotoxic elements such as Cu and Ni, which limits the application of Mg-based amorphous alloys in biomedical materials.

Method used

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  • Biomedical degradable magnesium-based bulk amorphous alloy and preparation method thereof
  • Biomedical degradable magnesium-based bulk amorphous alloy and preparation method thereof
  • Biomedical degradable magnesium-based bulk amorphous alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Mg with a diameter of 2 mm was prepared by copper mold casting 66 Zn 30 Ca 3 Sr 1 bulk amorphous alloy

[0037] Step 1: Ingredients

[0038] by Mg 66 Zn 30 Ca 3 Sr 1 The nominal composition of each element is weighed, wherein, the mass percentage purity of magnesium (Mg) is 99.9%; the mass percentage purity of zinc (Zn) is 99.9%; the mass percentage purity of calcium (Ca) is 99.9%; strontium (Sr) The mass percent purity is 99%;

[0039] Step 2: Smelting Mg 66 Zn 30 Ca 3 Sr 1 Master Alloy

[0040] Put the required raw materials weighed in step 1 into the vacuum induction melting furnace, and adjust the vacuum degree of the vacuum chamber of the melting furnace to 2×10 －2 Pa, and then filled with high-purity argon to make the vacuum of the vacuum chamber to 0.8×10 5 Pa, the melting temperature is 800°C, and after smelting for 15 minutes, it is cooled with the furnace and taken out to obtain the first alloy ingot;

[0041] Turn over the first alloy ingot, p...

Embodiment 2

[0054] Mg with a diameter of 2 mm was prepared by copper mold casting 66 Zn 30 Ca 2.5 Sr 1.5 bulk amorphous alloy

[0055] Step 1: Ingredients

[0056] by Mg 66 Zn 30 Ca 2.5 Sr 1.5 The nominal composition of each element is weighed, wherein, the mass percentage purity of magnesium (Mg) is 99.9%; the mass percentage purity of zinc (Zn) is 99.9%; the mass percentage purity of calcium (Ca) is 99.9%; strontium (Sr) The mass percent purity is 99%;

[0057] Step 2: Smelting Mg 66 Zn 30 Ca 2.5 Sr 1.5 Master Alloy

[0058] Put the required raw materials weighed in step 1 into the vacuum induction melting furnace, and adjust the vacuum degree of the vacuum chamber of the melting furnace to 2×10 －2 Pa, and then filled with high-purity argon to make the vacuum of the vacuum chamber to 0.8×105 Pa, the melting temperature is 800°C, and after smelting for 15 minutes, it is cooled with the furnace and taken out to obtain the first alloy ingot;

[0059] Turn over the first allo...

Embodiment 3

[0070] Mg with a diameter of 2 mm was prepared by copper mold casting 73 Zn 23 Ca 3.5 Sr 0.5 bulk amorphous alloy

[0071] Step 1: Ingredients

[0072] by Mg 73 Zn 23 Ca 3.5 Sr 0.5 The nominal composition of each element is weighed, wherein, the mass percentage purity of magnesium (Mg) is 99.9%; the mass percentage purity of zinc (Zn) is 99.9%; the mass percentage purity of calcium (Ca) is 99.9%; strontium (Sr) The mass percent purity is 99%;

[0073] Step 2: Smelting Mg 73 Zn 23 Ca 3.5 Sr 0.5 Master Alloy

[0074] Put the required raw materials weighed in step 1 into the vacuum induction melting furnace, and adjust the vacuum degree of the vacuum chamber of the melting furnace to 2×10 －2 Pa, and then filled with high-purity argon to make the vacuum of the vacuum chamber to 0.8×10 5 Pa, the melting temperature is 850°C, and after smelting for 15 minutes, it is cooled with the furnace and taken out to obtain the first alloy ingot;

[0075] Turn over the first al...

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Abstract

The invention discloses a biomedical degradable magnesium-based bulk amorphous alloy and a preparation method thereof. The chemical composition of the alloy is MgaZnbCacSrd, wherein the atomic percentage of a is 60-73, the atomic percentage of b is 22-35, the atomic percentage of c is 2-6, the atomic percentage of d is 0-2, and a+b+c+d = 100. The Mg-Zn-Ca-Sr bulk amorphous alloy has (1) high amorphous forming ability, (2) good mechanical biocompatibility, high specific strength and low Young's modulus, and (3) suitable corrosion rate and excellent biological compatibility. The amorphous formation critical size is 6mm. The biomedical degradable magnesium-based bulk amorphous alloy has a wide application prospect in the field of biological materials, medical equipment and structural materials.

Description

technical field [0001] The invention relates to a bulk amorphous alloy material, more specifically, a biomedical degradable Mg-Zn-Ca-Sr bulk amorphous alloy with excellent biocompatibility and a preparation method thereof. Background technique [0002] Biomedical degradable material is a new type of biomedical material. Its wide use can avoid the pain caused by the secondary operation and operation after the non-degradable implant material is removed after implantation. Its development and application are of great importance to human health and The development of medicine is of great significance. Biomedical degradable magnesium alloys can realize the function of in vivo degradation due to ① high corrosion rate; ② small elastic modulus can weaken the stress shielding effect; Harmless to the human body, it can promote bone healing and develop rapidly. However, the degradation process of magnesium alloys in the body is usually accompanied by the generation of hydrogen gas, w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C45/00
Inventor 张涛逄淑杰李海飞
Owner BEIHANG UNIV
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