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Degradable biological magnesium-based amorphous alloy and preparation method thereof

An amorphous alloy and biological technology, which is applied in the field of degradable biological magnesium-based amorphous alloy and its preparation, can solve the problems of unfavorable and controllable degradation, excessive metal content and inability, and achieves reduced degradation rate, high strength and corrosion resistance. , the effect of enhancing corrosion resistance

Inactive Publication Date: 2014-07-23
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, magnesium alloys also have some problems as scaffold materials for bone implants: as scaffold materials for bone tissue engineering, the degradation speed of the implant material is required to match the speed of bone tissue repair and reconstruction.
[0009] The magnesium-based amorphous material prepared by the above two patents introduces a large amount of Cu, Y, and Nd elements, which is not conducive to the controllable degradation in the body, and will cause the metal content in the body to exceed the standard, and cannot be used as an implant material in the body.

Method used

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  • Degradable biological magnesium-based amorphous alloy and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0027] Mg powder, Zn particles, Ca particles, Zr particles, Sr particles and other raw materials with a purity of not less than 99.5% are prepared in an appropriate mass percentage into Mg 66.5 Zn 28 Ca 4 Zr 0.5 Sr 1 masterbatch, 5 kg in total; put the master alloy raw materials with a good ratio into the crucible of the vacuum induction melting furnace, and use the method of intermediate frequency induction melting (700 ℃) to melt the raw materials repeatedly 4 times under vacuum conditions, and then Stir during the process to make the alloy composition uniform, and pour into alloy ingots; break the alloy ingots obtained by smelting, put the broken block alloys into acetone solution and alcohol solution in turn for ultrasonic cleaning, take them out and dry them naturally; Put the bulk alloy ingot into the quartz tube of the vacuum suction casting equipment, and the vacuum degree is 3×10 -4 Pa, induction heating and melting were carried out, and Mg was prepared by vacuum ...

Embodiment 2

[0029]Mg powder, Zn particles, Ca particles, Zr particles, Sr particles and other raw materials with a purity of not less than 99.5% are prepared in an appropriate mass percentage into Mg 65.5 Zn 28 Ca 4 Zr 0.5 Sr 2 masterbatch, 5 kg in total; put the master alloy raw materials with a good ratio into the crucible of the vacuum induction melting furnace, and use the method of intermediate frequency induction melting (750°C) to melt the raw materials repeatedly 4 times under vacuum conditions, and then Stir during the process to make the alloy composition uniform, and pour into alloy ingots; break the alloy ingots obtained by smelting, put the broken block alloys into acetone solution and alcohol solution in turn for ultrasonic cleaning, take them out and dry them naturally; Put the bulk alloy ingot into the quartz tube of the vacuum suction casting equipment, at a vacuum degree of 4×10 -4 Pa, induction heating and melting were carried out, and Mg was prepared by vacuum suct...

Embodiment 3

[0031] Mg powder, Zn particles, Ca particles, Zr particles, Sr particles and other raw materials with a purity of not less than 99.5% are prepared in an appropriate mass percentage into Mg 64.5 Zn 30 Ca 4 Zr 0.5 Sr 1 Masterbatch, 5 kg in total; put the master alloy raw materials with a good ratio into the crucible of the vacuum induction melting furnace, and use the method of intermediate frequency induction melting (800 °C) to melt the raw materials repeatedly 4 times under vacuum conditions. Stir during the process to make the alloy composition uniform, and pour into alloy ingots; break the alloy ingots obtained by smelting, put the broken block alloys into acetone solution and alcohol solution in turn for ultrasonic cleaning, take them out and dry them naturally; Put the bulk alloy ingot into the quartz tube of the vacuum suction casting equipment, at a vacuum degree of 5×10 -4 Pa, induction heating and melting were carried out, and Mg was prepared by vacuum suction cas...

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Abstract

The invention relates to a degradable biological magnesium-based amorphous alloy. The composition of the alloy is expressed by a chemical formula as follows: Mg100-x-y-z-wZnxCayZrzSrw, wherein x is greater than or equal to 25 and less than or equal to 35, y is greater than or equal to 1 and less than or equal to 5, Z is greater than 0 and less than or equal to 1, and w is greater than 0 and less than or equal to 4; according to the proportions of the various elements in Mg100-x-y-z-wZnxCayZrzSrw, Mg powder, Zn particles, Ca particles, Zr particles and Sr particles, all having the purity of not lower than 99.5%, are prepared into a mother alloy raw material having the nominal composition of Mg100-x-y-z-wZnxCayZrzSrw in appropriate percentage by weight; the prepared mother alloy raw material is smelted repeated more than 3 times under a vacuum condition by use of a medium-frequency induction smelting method and then is cast into an alloy ingot; the alloy ingot is crushed, and the crushed alloy pieces are orderly put in an acetone solution and an alcoholic solution for ultrasonic cleaning; the alloy pieces are prepared into Mg100-x-y-z-wZnxCayZrzSrw amorphous rods by use of a vacuum suction casting method. Compared with the prior art, the magnesium-based amorphous alloy prepared by the preparation method has higher strength and corrosion resistance, and also retains excellent biocompatibility.

Description

technical field [0001] The invention relates to a magnesium-based amorphous alloy and a preparation method thereof, in particular to a degradable biological magnesium-based amorphous alloy and a preparation method thereof. Background technique [0002] In recent years, with the continuous deepening of bone tissue engineering research, it is of great significance to develop new bone tissue engineering materials that have good mechanical properties and can be safely degraded in vivo. Medical metal materials have high mechanical strength, good toughness, wear resistance, fatigue resistance, good stability and processing performance, and are the most widely used load-bearing implant materials in clinical practice. Metal materials that have been used clinically include stainless steel (iron-based alloy), cobalt-based alloy and titanium-based alloy. Although these medical metal materials have good comprehensive mechanical properties and excellent processing properties, they are u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C45/00C22C1/03A61L27/04A61L31/02
Inventor 陆伟黄平凌敏贾敏
Owner TONGJI UNIV
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