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Degradable medical implant material zinc-silicon series alloy and preparation method thereof

An implant material, zinc-silicon technology, applied in medical science, surgery, etc., can solve the problems of excessive difference in melting point of zinc-silicon alloy elements and difficult to control the degradation rate of the alloy, and achieve stable product quality, excellent biocompatibility and mechanical properties. The effect of performance and short process flow

Inactive Publication Date: 2020-08-21
长沙镁捷新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a degradable medical implant material zinc-silicon series alloy and its preparation method, the purpose of which is to solve the problem that the melting point of zinc-silicon alloy elements is too large and the degradation rate of the alloy in the human body is difficult to control

Method used

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  • Degradable medical implant material zinc-silicon series alloy and preparation method thereof
  • Degradable medical implant material zinc-silicon series alloy and preparation method thereof
  • Degradable medical implant material zinc-silicon series alloy and preparation method thereof

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Effect test

Embodiment 1

[0036] (1) Zinc powder and silicon powder with a powder particle size of 20 μm are selected, and the purity of the powder is more than 99.9%; the zinc powder and silicon powder are configured alloy components of 99% zinc and 1% silicon by mass percentage;

[0037] (2) Weigh zinc powder and silicon powder in proportion on an electronic balance, put them into a sealable mixing tank filled with argon, and mix them on a three-dimensional mixer for 40 minutes;

[0038] (3) Put the mixed metal powder in the mold, press and form it under the cold press, the pressing pressure is 10MPa, put the pressed blank in the vacuum hot pressing sintering furnace protected by argon, heat and pressurize and sinter . Raise the temperature from room temperature to 300°C and keep it warm for 10 minutes, then raise the temperature to 400°C and keep it warm for 10 minutes. During the sintering process, keep the pressure at 5MPa;

[0039] (4) Cooling after the sintering is completed, during the coolin...

Embodiment 2

[0042] (1) Zinc powder and silicon powder with a powder particle size of 50 μm are selected, and the purity of the powder is more than 99.9%; the zinc powder and silicon powder are composed of 90% zinc and 10% silicon configuration alloy composition by mass percentage;

[0043] (2) Weigh zinc powder and silicon powder in proportion on an electronic balance, put them into a sealable mixing tank filled with argon, and mix them on a three-dimensional mixer for 60 minutes;

[0044](3) Put the mixed metal powder in the mold, press and form it under a cold press, the pressing pressure is 50MPa, put the pressed and formed blank in a vacuum hot-pressing sintering furnace protected by argon, and heat and pressurize it for sintering . Raise the temperature from room temperature to 300°C and keep it warm for 20 minutes, then raise the temperature to 600°C and keep it warm for 60 minutes. During the sintering process, keep the pressure at 50MPa;

[0045] (4) Cooling after the sintering ...

Embodiment 3

[0048] (1) Select zinc powder, silicon powder and iron powder with a powder particle size of 10 μm to 50 μm, and the purity of the powder is above 99.9%; the zinc powder and silicon powder shall be 99% zinc, 0.5% silicon and 0.5% Alloy composition of iron configuration;

[0049] (2) Weigh zinc powder, silicon powder and iron powder in proportion on an electronic balance, put them into a sealable mixing tank filled with argon, and mix them on a three-dimensional mixer for 60 minutes;

[0050] (3) Put the mixed metal powder in the mold, press and form it under a cold press, the pressing pressure is 50MPa, put the pressed and formed blank in a vacuum hot-pressing sintering furnace protected by argon, and heat and pressurize it for sintering . Raise the temperature from room temperature to 300°C and keep it warm for 20 minutes, then raise the temperature to 600°C and keep it warm for 60 minutes. During the sintering process, keep the pressure at 50MPa;

[0051] (4) Cooling afte...

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Abstract

The invention provides a degradable medical implant material zinc-silicon series alloy and a preparation method thereof. The alloy is based on zinc-silicon, and added with a third or fourth componentalloy, and the multi-component zinc-silicon series alloy is prepared by adopting a powder metallurgy method. The preparation method comprises the following specific steps of selecting raw materials; putting into a mixing tank that can be hermetically filledwith argon gas, mixing on a mixing machine for 40 min to 60 min; pressing and sintering the mixed powder after mixing; cooling to room temperature, releasing the pressure, breaking the vacuum and performing argon protection, thereby obtaining a sintered zinc-silicon-based alloy blank; and annealing, forging, and machining to obtain the zinc-silicon alloy material. The degradable medical implant material zinc-silicon series alloy realizes the effective alloying between the two elements of high-melting-point silicon and low-melting-point zinc to obtain the zinc-silicon series alloy. The alloy has excellent biocompatibility and mechanical properties, and can be adjusted in degrading speed by changing the silicon content; and the methodhas short process flow, stable product quality, and low production cost, and is suitable for mass production.

Description

technical field [0001] The invention relates to the fields of biomedical new materials and powder metallurgy processing technologies, in particular to a degradable medical implant material zinc-silicon series alloy and a preparation method thereof. Background technique [0002] Traditional surgical implants of metal materials often require secondary operations to remove them, causing secondary damage to patients. Degradable medical implant materials can not only meet the requirements of clinical application, but also can spontaneously degrade and be excreted with metabolism after the service period is over, which can reduce or avoid the problems caused by permanent medical implants. Some metal elements contained in the human body are gradually used as clinical implant materials, such as magnesium, iron, zinc and their corresponding alloys, because these metal materials have good comprehensive mechanical properties and biocompatibility, and can As a degradable medical metal ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C18/00C22C1/05C22F1/16A61L31/14A61L31/02
CPCA61L31/022A61L31/148C22C1/05C22C18/00C22F1/165
Inventor 余琨
Owner 长沙镁捷新材料科技有限公司
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