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Powder sintering method of porous gradient Ti-12Mo-6Zr-2Fe alloy

A technology of ti-12mo-6zr-2fe and sintering method, which is applied in the field of preparation of porous gradient alloys, can solve problems such as osteoporosis, and achieve the effects of high pore-forming quality, wide average pore size range, and good energy-saving effect

Inactive Publication Date: 2013-10-02
SHENYANG LIGONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its elastic modulus is much higher than that of human hard tissue, which will cause stress shielding effect and cause problems such as osteoporosis

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Take commercial TiH with an average particle size of ≤75 μm 2 , Mo, Zr and Fe powders, spare. Take the pore-forming agent ammonium bicarbonate powder in the set particle size range and set aside.

[0027] (2), first according to the mass ratio TiH 2 : Mo: Zr: Fe = 83.09: 11.75: 5.75: 1.75 to prepare commercial TiH 2 , Mo, Zr and Fe metal powders and mixed in a mixer for 24 hours to make a metal powder mixture.

[0028] (3) Mix 66.5 g of the metal powder mixture prepared above with 3.5 g of ammonium bicarbonate powder in a particle size range of 180-200 μm in a mixer for 6 hours to form a mixture of metal powder and pore-forming agent.

[0029] 52.5 g of the metal powder mixture prepared above and 17.5 g of ammonium bicarbonate powder with a particle size range of 180-200 μm were mixed in a mixer for 6 hours to prepare a mixture of metal powder and pore-forming agent.

[0030] Take 35g of the above-prepared metal powder mixture and 35g of ammonium bicarbonate pow...

Embodiment 2

[0036] (1) Take commercial TiH with an average particle size ≤ 50 μm 2 , Mo, Zr and Fe powders, spare. Take the pore-forming agent ammonium bicarbonate powder in the set particle size range and set aside.

[0037] (2), first according to the mass ratio TiH 2 : Mo: Zr: Fe = 83.59: 12.25: 6.25: 2.25 to prepare commercial TiH 2 , Mo, Zr and Fe metal powders and mixed in a mixer for 48 hours to make a metal powder mixture.

[0038] (3) Mix 45.5 g of the metal powder mixture prepared above with 24.5 g of ammonium bicarbonate powder in a particle size range of 210-240 μm in a mixer for 12 hours to form a mixture of the metal powder and the pore-forming agent.

[0039] Take 45.5 g of the metal powder mixture prepared above and 24.5 g of ammonium bicarbonate powder with a particle size range of 270-300 μm and mix them in a mixer for 12 hours to prepare a mixture of metal powder and pore-forming agent.

[0040] 45.5 g of the metal powder mixture prepared above and 24.5 g of ammoniu...

Embodiment 3

[0046] (1) Take commercial TiH with an average particle size of ≤75 μm 2 , Mo, Zr and Fe powders, spare. Take the pore-forming agent ammonium bicarbonate powder in the set particle size range and set aside.

[0047] (2), first according to the mass ratio TiH 2 : Mo: Zr: Fe = 83.34: 12.00: 6.00: 2.00 to prepare commercial TiH 2 , Mo, Zr and Fe metal powders and mixed in a mixer for 36 hours to make a metal powder mixture.

[0048](3) Mix 66.5 g of the metal powder mixture prepared above with 3.5 g of ammonium bicarbonate powder in a particle size range of 20-50 μm in a mixer for 8 hours to form a mixture of the metal powder and the pore-forming agent.

[0049] Take 63g of the above-prepared metal powder mixture and 7g of ammonium bicarbonate powder with a particle size range of 90-120 μm and mix them in a mixer for 8 hours to prepare a mixture of metal powder and pore-forming agent.

[0050] 52.5 g of the above-prepared metal powder mixture and 17.5 g of ammonium bicarbonat...

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Abstract

The invention relates to a powder sintering method of a porous gradient Ti-12Mo-6Zr-2Fe alloy, which comprises the following steps: taking TiH2, Mo, Zr and Fe powder; taking a pore forming agent ammonium bicarbonate powder; taking 83.09-83.59 parts by mass of TiH2, 11.75-12.25 parts by mass of Mo, 5.75-6.25 parts by mass of Zr and 1.75-2.25 parts by mass of Fe, and mixing to obtain a metal powder mixture; taking out at least three parts from the metal powder mixture, respectively mixing with the pore forming agent to prepare at least three mixtures of metal powder and pore forming agent, and sequentially adding into a die to prepare a blank; putting the blank into a vacuum sintering furnace, and heating until the pore forming agent is decomposed and pores are generated in the blank; continuing heating to decompose the TiH2 powder; and continuing heating to complete sintering. The elastic modulus of the alloy is matched with hard tissues of the human body; the structure of the alloy is similar to the microstructure of cancellous bone of the human body; and thus, the alloy can be used for substitution and restoration of hard tissues of the human body, such as skeleton, root of tooth and the like. The invention has the advantages of simple technique, favorable energy-saving effect, high pore-forming quality, wide porosity range and wide mean pore size range.

Description

technical field [0001] The invention belongs to the field of preparation methods of porous gradient alloys, in particular to a powder sintering method of porous gradient Ti-12Mo-6Zr-2Fe alloys. Background technique [0002] The microstructure and physical parameters of certain bones in the human body show gradient changes. In addition, the porous structure of cancellous bone facilitates the transport of nutrients and fluids and the in-growth of tissues. [0003] Traditional dense titanium alloys have become medical materials for hard tissue replacement and repair because of their good biocompatibility. However, its elastic modulus is much higher than that of human hard tissue, which will cause stress shielding effect and cause problems such as osteoporosis. Invention content: [0004] The purpose of this invention is to provide a kind of powder sintering method of porous gradient Ti-12Mo-6Zr-2Fe alloy, this method can be sintered into Ti-12Mo-6Zr-2Fe alloy material with ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/08C22C14/00
Inventor 李永华邓子玉王芳
Owner SHENYANG LIGONG UNIV