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Preparation method of porous titanium alloy material

A technology of titanium alloy and porous structure is applied in the field of preparation of porous materials, which can solve the problems of unstable mechanical properties of porous titanium alloys, and achieve the effects of favorable control, uniform pore distribution and wide application range.

Inactive Publication Date: 2014-12-17
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to provide a new method for preparing biomedical porous titanium alloy materials; the present invention controls the pore distribution and pore size through the early CAD design steps according to the requirements, thereby improving the number and size of pores caused by uneven distribution. The problem of unstable mechanical properties of porous titanium alloys; making it truly on-demand production, rational use, and elimination of waste

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  • Preparation method of porous titanium alloy material
  • Preparation method of porous titanium alloy material
  • Preparation method of porous titanium alloy material

Examples

Experimental program
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Embodiment 1

[0025] The method described in this embodiment is used to prepare TC4 (Ti-6Al-4V) porous titanium alloy material, such as figure 1 As shown, it specifically includes the following steps:

[0026] (1) Using CAD to design the 3D digital model of the titanium alloy porous structure and the 3D digital model of the casting mold, and using rapid prototyping technology to process the titanium alloy porous structure mold (such as Figure 2~3 shown) and casting mold, wherein the porous titanium alloy plastic mold is a cylinder with a diameter of Φ10mm and a height H of 3mm, and the distance between the pores is 0.5mm, the diameter of the pores is 0.1mm, and the porosity is 80%. The size and structure of the three-dimensional digital model of the pouring mold are as follows: the diameter Φ is 20mm, the height H is 8mm, the side wall thickness is 2mm, the upper and lower wall thicknesses are 2mm, and the pouring port diameter Φ is 0.5mm; the titanium alloy porous structure mold is locate...

Embodiment 2

[0034] The method described in this embodiment is used to prepare a porous titanium alloy material, which specifically includes the following steps:

[0035] (1) The three-dimensional digital model of the titanium alloy porous structure and the three-dimensional digital model of the casting mold are designed by CAD, and the titanium alloy porous structure mold and the casting mold are processed by rapid prototyping technology. Among them, the porous titanium alloy plastic mold has a diameter of Φ500mm, A cylinder with a height H of 450mm, the distance between pores is 5mm, the diameter of the pores is 0.5mm, and the porosity is 60%. The size and structure of the three-dimensional digital model of the casting mold are as follows: the diameter Φ is 700mm, the height H is 680mm, The side wall thickness is 20mm, the upper and lower wall thickness is 18mm, and the pouring port diameter Φ is 20mm; the titanium alloy porous structure mold is located inside the casting mold (such as ...

Embodiment 3

[0043] The method described in this embodiment is used to prepare a porous titanium alloy material, which specifically includes the following steps:

[0044] (1) The three-dimensional digital model of the porous structure of titanium alloy and the three-dimensional digital model of the casting mold are designed by CAD, and the titanium alloy porous structure mold and the casting mold are processed by rapid prototyping technology. Among them, the porous titanium alloy plastic mold has a diameter of Φ240mm, A cylinder with a height H of 220mm, the distance between pores is 3mm, the diameter of the pores is 1mm, and the porosity is 20%. The wall thickness is 10mm, the upper and lower wall thicknesses are 8mm, and the pouring port diameter Φ is 10mm; the titanium alloy porous structure mold is located inside the pouring mold (such as Figure 4 shown);

[0045] (2) The monomer acrylamide, crosslinking agent N, Add N'-methylenebisacrylamide and dispersant ammonium citrate into dis...

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Abstract

The invention discloses a preparation method of a porous titanium alloy material, and belongs to the technical field of preparation of porous materials. The method allows people to design the porous titanium alloy material according to own needs. According to actual needs, the pore distribution and the pore size are controlled through an early three-dimensional digital model design step so that the problem of instable mechanical performance of a porous titanium alloy caused by uneven pore distribution in number and size can be solved. The on-demand production is truly realized; and the reasonable utilization and the waste prevention are achieved. The preparation method radically solves the problems of difficult control of the pore size, complex process, difficult foaming process and high cost in the conventional porous material preparation method. The performance of the porous titanium alloy can be controlled through the early three-dimensional digital model design, and, besides that, the preparation method also can control the mechanical performance and the physical property of the porous titanium alloy through a later gel casting process.

Description

technical field [0001] The invention discloses a preparation method of a porous titanium alloy material, which belongs to the technical field of preparation of porous materials. Background technique [0002] With the development of social economy and the improvement of per capita living standards, human beings attach great importance to medical rehabilitation. The social demand for biomedical materials and their products is also increasing. At present, most of the fracture internal fixation devices widely used clinically are made of stainless steel and titanium alloy. Among them, among alloys, titanium and titanium alloy materials have light weight, high specific strength, and high modulus of elasticity. When it is directly implanted into the body as an implant, under the action of external stress, the healing of body tissues will be affected due to the large difference in mechanical properties between the implant and the body. In order to solve this problem, people have ...

Claims

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Application Information

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IPC IPC(8): C22C1/08C22C14/00
Inventor 严继康倪尔鑫唐婉霞段志操甘国友易健宏
Owner KUNMING UNIV OF SCI & TECH