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Method for preparing porous titanium material

A technology of porous titanium and raw materials, applied in the field of materials, can solve the problems of low porosity, cumbersome process, difficult to completely remove the gelling agent, etc., achieve high compressive strength, simple operation, improve mechanical compatibility and biocompatibility sexual effect

Active Publication Date: 2018-01-09
CHENGDU ADVANCED METAL MATERIALS IND TECH RES INST CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The production process of powder metallurgy method is simple, but the pore structure is affected by powder size, powder arch bridge phenomenon, etc., and the porosity is low; the powder slurry foaming method uses urea, starch, sodium chloride, ammonium bicarbonate, etc. as pore-forming agents to form pores. It is difficult to completely remove the gelling agent, and the uniformity of the pores is poor; the gel forming method can achieve high porosity, high porosity, and the preparation of complex and large parts, but there are problems such as cumbersome process and difficult to completely remove the gelling agent

Method used

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  • Method for preparing porous titanium material
  • Method for preparing porous titanium material

Examples

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Embodiment 1

[0050] Example 1 Preparation of three-dimensional interconnected titanium-aluminum alloy porous material by the method of the present invention

[0051] 1. Place magnesium metal with a purity of 99.9% in a vacuum container, control the vacuum at 20 Pa, and control the temperature at 750°C to prepare magnesium vapor, and the obtained magnesium vapor is protected with argon.

[0052] 2. In a closed container filled with argon at room temperature (20-35°C), AlCl 3 with TiCl 4 mixed to prepare 5 wt% AlCl 3 TiCl 4 ; The prepared mixed with AlCl 3 TiCl 4 Heated to 150 ° C, the preparation of the mixture vapor.

[0053] 3. Heat the closed reaction mold with a volume of 0.5L and a material of 20G to 1050°C, vacuum the mold to 100Pa, and mix AlCl 3 TiCl 4 Steam and magnesium vapor were added at the same time at 35g / h and 15g / h respectively, and the reaction mold was pre-coated for 1 hour.

[0054] 4. Heat the reaction mold to 980°C, vacuum the mold to 100Pa, mix AlCl 3 TiCl 4...

Embodiment 2

[0062] Example 2 Using the method of the present invention to prepare a three-dimensional connected pure titanium porous material

[0063] 1. Place magnesium metal with a purity of 99.9% in a vacuum container, control the vacuum at 20 Pa, and control the temperature at 750°C to prepare magnesium vapor, and the obtained magnesium vapor is protected with argon.

[0064] 2. Put the TiCl in the airtight container filled with argon at room temperature (20-35°C) 4 Heated to 150°C to prepare TiCl 4 steam.

[0065] 3. Heat the reaction mold with a volume of 0.5L and a material of 20G to 1050°C, pump the vacuum inside the mold to 100Pa, and put TiCl 4 Steam and magnesium vapor were added at the same time at the speed of 70g / h and 30g / h respectively, and the reaction mold was pre-coated for 1h.

[0066] 4. Heat the reaction mold to 980°C, evacuate the vacuum in the mold to 100Pa, and put TiCl 4 Steam and magnesium vapor are simultaneously passed into the reaction mold at 70g / h and 3...

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Abstract

The invention discloses a method for preparing a porous titanium material. The porous titanium material comprises raw materials of magnesium and TiCl4 through a chemical vapor deposition method. By adopting the method disclosed by the invention, the porous titanium material of which the porosity and the compressive strength are high and the elasticity modulus is approximate to that of human bone is prepared, the prepared material is of a three-dimensional communication structure, is beneficial to body fluid transmission and is beneficial to improvement of mechanical compatibility and biocompatibility of implant materials with human tissue. More conveniently, properties such as the porosity and the pressure resistance of the porous material are adjusted by controlling the charging speed ofraw material steam and the types and the contents of alloys. The method disclosed by the invention is simple to operate, free of pore forming materials or gel, and is applicable to preparation of biological medical titanium materials.

Description

technical field [0001] The invention relates to a preparation method of a porous titanium material and belongs to the field of materials. Background technique [0002] Due to their excellent corrosion resistance, biocompatibility, low density and high specific strength, titanium and titanium alloys have been widely used in medical surgery, especially in the field of bone repair. However, the elastic modulus of ordinary titanium and titanium alloys does not match that of natural bone, and its tensile strength, compressive strength and bending strength are much higher than those of human bone, and the load cannot be well transmitted from the implant to the adjacent bone. The bone tissue produces stress shielding phenomenon, which causes bone stress absorption around the implant, and eventually leads to loosening and fracture of the implant, which limits its further application. Therefore, making titanium and titanium alloys into a porous structure to obtain an elastic modulus...

Claims

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Application Information

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IPC IPC(8): A61L27/06A61L27/56C23C16/12C23C16/14C23C16/56
Inventor 盛卓
Owner CHENGDU ADVANCED METAL MATERIALS IND TECH RES INST CO LTD