Biomedical porous Ti-Zn alloy and preparation method thereof

A biomedical, ti-zn technology, applied in medical science, tissue regeneration, prosthesis, etc., can solve the problems of no biological activity, bacterial infection, stress shielding, etc., to improve biological activity, promote growth and reproduction, and enhance mechanical properties. Effect

Active Publication Date: 2021-04-27
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still three problems in the clinical application of titanium alloys: first, the elastic modulus of titanium alloys is about 110Gpa, which is much larger than that of artificial bones (<20GPa), which may easily cause stress shielding; second, when After the implant is implanted in the human body, it is easy to cause bacterial infection; third, titanium alloy is an inert material, has no biological activity, and cannot form osseointegration with bone
At present, microwave sintering technology has been widely used in the sintering of biomedical metals, ceramics and other materials. It is a sintering technology that can be sintered at one time and has a near-net shape. However, microwave sintering has not been used to prepare medical porous Ti-Zn at home and abroad so far. Alloy reports

Method used

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  • Biomedical porous Ti-Zn alloy and preparation method thereof
  • Biomedical porous Ti-Zn alloy and preparation method thereof

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Experimental program
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Embodiment 1

[0030] The invention provides a method for preparing a biomedical porous Ti-Zn alloy, comprising the following steps:

[0031] S1: Mix titanium powder and zinc powder in a ratio of 90:10 by weight, and then place them in a stainless steel planetary ball mill for dry mixing. The controlled speed is 250r / min, and the time is 3h;

[0032] S2: Molding the dry-mixed powder in step S1 under a pressure of 800Mpa to form a compact;

[0033] S3: Put the compact and silicon carbide powder prepared in step S2 into a polycrystalline mullite fiber insulation barrel, and then place it in a microwave sintering furnace. It is 99.999% argon, the output power of the microwave sintering furnace is controlled to 2kW, the heating rate is 30°C / min, the sintering temperature is 800°C, and the sintering time is 20min. Microwave sintering is carried out, and biomedical porous Ti is obtained after cooling with the furnace. -Zn alloy.

[0034] The porous Ti-Zn alloy prepared by the method provided in ...

Embodiment 2

[0042] The invention provides a method for preparing a biomedical porous Ti-Zn alloy, comprising the following steps:

[0043] S1: Mix titanium powder and zinc powder in a ratio of 85:15 by weight and place them in a stainless steel planetary ball mill for dry mixing. The control speed is 220r / min, and the time is 3.5h;

[0044] S2: Molding the dry-mixed powder in step S1 under a pressure of 600Mpa to form a compact;

[0045] S3: Put the compact and silicon carbide powder prepared in step S2 into a polycrystalline mullite fiber insulation barrel, and then place it in a microwave sintering furnace. It is 99.999% argon, the output power of the microwave sintering furnace is controlled to 1.5kW, the heating rate is 25°C / min, the sintering temperature is 750°C, and the sintering time is 15min. Microwave sintering is carried out, and biomedical porous materials are obtained after cooling with the furnace. Ti-Zn alloy.

[0046] The porous Ti-Zn alloy prepared by the method provide...

Embodiment 3

[0048] The invention provides a method for preparing a biomedical porous Ti-Zn alloy, comprising the following steps:

[0049] S1: Mix titanium powder and zinc powder in a ratio of 75:25 by weight and place them in a stainless steel planetary ball mill for dry mixing. The control speed is 280r / min, and the time is 2.5h;

[0050] S2: Molding the powder after dry mixing in step S1 under a pressure of 900Mpa to form a compact;

[0051] S3: Put the compact and silicon carbide powder prepared in step S2 into a polycrystalline mullite fiber insulation barrel, and then place it in a microwave sintering furnace. It is 99.999% argon, the output power of the microwave sintering furnace is controlled to 2.5kW, the heating rate is 40°C / min, the sintering temperature is 900°C, and the sintering time is 25min. Microwave sintering is carried out, and biomedical porous materials are obtained after cooling with the furnace. Ti-Zn alloy.

[0052] The porous Ti-Zn alloy prepared by the method ...

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Abstract

The invention provides a biomedical porous Ti-Zn alloy and a preparation method thereof. The preparation method comprises the following steps that S1, titanium powder and zinc powder are mixed according to a certain proportion and then placed in a stainless steel ball milling tank to be subjected to dry mixing; S2, the dry-mixed powder is subjected to mold pressing under the pressure of 500-1000 Mpa to be manufactured into a pressed blank; S3, the pressed blank and the silicon carbide powder are put into a polycrystalline mullite fiber heat preservation barrel and then put into a microwave sintering furnace, argon with the purity being 99.999% is introduced after the vacuum degree in a furnace cavity is pumped to be lower than 0.1 Pa, the output power of the microwave sintering furnace is controlled, microwave sintering is conducted at a certain temperature rising speed, sintering temperature and sintering time, and the biomedical porous Ti-Zn alloy is obtained after furnace cooling. According to the biomedical porous Ti-Zn alloy and the preparation method thereof, the prepared porous Ti-Zn alloy is low in elasticity modulus, excellent in mechanical property and good in antibacterial effect and biological activity, and can be used as a hard tissue repairing and replacing material for bones, joints, artificial tooth roots and the like.

Description

technical field [0001] The invention relates to the technical field of preparation of biomedical metal materials, in particular to a biomedical porous Ti-Zn alloy and a preparation method thereof. Background technique [0002] Due to its light weight, high specific strength, excellent corrosion resistance and biocompatibility, good toughness and impact resistance and other advantages, titanium alloy has been widely used in human hard tissue transplantation materials. However, there are still three problems in the clinical application of titanium alloys: first, the elastic modulus of titanium alloys is about 110Gpa, which is much larger than that of artificial bones (<20GPa), which may easily cause stress shielding; second, when After the implant is implanted in the human body, it is easy to cause bacterial infection; third, titanium alloy is an inert material, has no biological activity, and cannot form osseointegration with bone. The currently studied Ti6Al4V-Cu and TiC...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/08C22C14/00B22F3/11A61L27/06A61L27/54A61L27/56
CPCA61L27/06A61L27/54A61L27/56A61L2300/102A61L2300/404A61L2430/02B22F3/1121C22C1/08C22C14/00
Inventor 徐吉林赖涛罗军明
Owner NANCHANG HANGKONG UNIVERSITY
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