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A kind of biomedical porous ti-zn alloy and preparation method thereof

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

Active Publication Date: 2021-10-29
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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  • A kind of biomedical porous ti-zn alloy and preparation method thereof
  • A kind of biomedical porous ti-zn alloy and preparation method thereof
  • A kind of biomedical porous ti-zn alloy and preparation method thereof

Examples

Experimental program
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Effect test

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, comprising the following steps: S1: mixing titanium powder and zinc powder in a certain proportion and then placing them in a stainless steel ball mill for dry mixing; S2: mixing the dry The resulting powder is molded into a compact under the pressure of 500~1000Mpa; S3: The compact and the silicon carbide powder are put into a polycrystalline mullite fiber insulation barrel, and then placed in a microwave sintering furnace. The vacuum degree in the furnace cavity is After pumping to less than 0.1Pa, fill with argon with a purity of 99.999%, control the output power of the microwave sintering furnace, conduct microwave sintering at a certain heating rate, sintering temperature and sintering time, and obtain biomedical porous after cooling with the furnace. Ti‑Zn alloys. The porous Ti-Zn alloy prepared by the invention has low elastic modulus, excellent mechanical properties, good antibacterial effect and good biological activity, and can be used as bone, joint, artificial tooth root and other hard tissue repair and replacement materials.

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 Patents(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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