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Porous titanium-aluminum-based alloy material, preparation method and application thereof

A technology of alloy material and base alloy, which is applied in the field of porous Ti-Al base alloy material and preparation, can solve the problems of low strength, harm of pore-forming agent, etc.

Inactive Publication Date: 2019-12-13
GUANGDONG INST OF MATERIALS & PROCESSING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the sintering temperature is low, the powder is not fully metallurgically bonded, and the strength is low
And when applied to biomedical implant materials, the residual pore-forming agent in the micropores will cause harm to the human body

Method used

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  • Porous titanium-aluminum-based alloy material, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] A near-net-shape preparation method of porous Ti-6Al-4V material, using MIM technology. The raw materials used are 15-25 micron spherical Ti powder, Al powder and V powder, and the weight ratio of the three powders is 90:6:4. The binder adopts a plastic-based binder system, and the binder is composed of POM, EVA, HDPE and SA (mass ratio is 88:5:5:2), and the volume content of the binder is 60%.

[0056] The near net shape preparation method of a kind of porous Ti-6Al-4V material as above, concrete steps are:

[0057] 1. Calculate the weight according to the volume content ratio of powder and binder, and mix it in a V-shaped mixer for 5 hours.

[0058] 2. Carry out banburying in a vacuum mixer, the banburying temperature is 190°C, and the banburying time is 70min. Mix the powder and binder evenly to make feed.

[0059] 3. Inject the feed material in a powder injection molding machine to obtain a rough product. The injection temperature is 170° C. and the injection pre...

Embodiment 2

[0065] A near-net-shape preparation method of porous Ti-6Al-4V material, using MIM technology. The raw materials used are 15-30 micron spherical Ti powder and 6Al-4V alloy powder, and the weight ratio of the three powders is 90:10. The binder adopts a water-soluble binder system, the binder is composed of PEG, PMMA and SA (mass ratio is 87:11:2), and the volume content of the binder is 55%.

[0066] The near net shape preparation method of a kind of porous Ti-6Al-4V material as above, concrete steps are:

[0067] 1. Calculate the weight according to the volume content ratio of powder and binder, and mix it in a V-shaped mixer for 5 hours.

[0068] 2. Carry out banburying in a vacuum mixer, the banburying temperature is 140°C, and the banburying time is 60min. Mix the powder and binder evenly to make feed.

[0069] 3. Inject the feed material in a powder injection molding machine to obtain a rough product. The injection temperature is 160° C. and the injection pressure is 20...

Embodiment 3

[0074] A near-net-shape preparation method of porous Ti-6Al-4V material, using MIM technology. The raw materials used are 15-30 micron spherical Ti powder, Al powder and V powder, and the weight ratio of the three powders is 90:6:4. The binder adopts a wax-based binder system, and the binder is composed of PW, PP and SA (the mass ratio is 65:30:5), and the volume content of the binder is 50%.

[0075] The near net shape preparation method of a kind of porous Ti-6Al-4V material as above, concrete steps are:

[0076] 1. Calculate the weight according to the volume content ratio of the powder and the binder, and mix it in a V-shaped mixer for 6 hours.

[0077] 2. Carry out banburying in a vacuum mixer, the banburying temperature is 160 degrees, and the banburying time is 60min. Mix the powder and binder evenly to make feed.

[0078] 3. Inject the feed material in a powder injection molding machine to obtain a rough product. The injection temperature is 170° C. and the injectio...

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Abstract

The invention discloses a porous titanium-aluminum-based alloy material, a preparation method and application thereof. According to the porous titanium-aluminum-based alloy material, titanium powder and aluminum powder are adopted as raw materials, and the porous titanium-aluminum-based alloy material is prepared and acquired by adopting a metal powder injection molding technology. No pore formingagent is added in the preparation process of the porous material; instead, difference of the diffusion coefficient between aluminum and titanium is utilized; and aluminum diffuses in titanium, and ahigh-porosity material is acquired. The porous titanium-aluminum-based alloy material prepared by adopting the method is molded in a near-net manner; the interior of pores is clean and environment-protective; and the material can be applied to fields such as medical implantation and the like as an implanted material.

Description

technical field [0001] The invention relates to the technical field of material preparation, in particular to a porous Ti-Al-based alloy material, a preparation method and an application thereof. Background technique [0002] Porous titanium and titanium alloys have the excellent characteristics of high specific strength, light weight and good energy absorption of porous materials. They also have the advantages of corrosion resistance and good biocompatibility of titanium and titanium alloys. They are widely used in biomedical implant materials, Filter materials, sound-absorbing materials and other fields. [0003] At present, the methods for preparing porous titanium and titanium alloys at home and abroad include powder sintering method, slurry foaming method, spark plasma sintering method, self-propagating high-temperature synthesis method, and additive manufacturing method. However, there are still difficulties in the preparation of products with complex shapes by these ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/11B22F3/22B22F1/00C22C14/00A61L31/02A61L31/14
CPCB22F3/11B22F3/225C22C14/00A61L31/022A61L31/146B22F1/107
Inventor 邹黎明胡可刘辛
Owner GUANGDONG INST OF MATERIALS & PROCESSING
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