Preparation method of gradient porous titanium alloy

A gradient porous, titanium alloy technology, applied in the field of porous titanium and titanium alloys, can solve the problems of difficult to achieve pore size gradient, difficult to control the pore size, difficult to control the pore shape, etc., to achieve easy control of the preparation process, stable mechanical properties, reduced The effect of small pollution

Inactive Publication Date: 2013-04-24
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to overcome the disadvantages of low yield strength of porous titanium, difficult control of pore shape, difficult control of pore s

Method used

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  • Preparation method of gradient porous titanium alloy
  • Preparation method of gradient porous titanium alloy
  • Preparation method of gradient porous titanium alloy

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0033] This embodiment is a method for preparing porous titanium with equal pore size, comprising the following steps:

[0034] Step 1. Make single-layer titanium mesh

[0035] A single-layer TA1 titanium mesh with a hole diameter of 100 mesh was punched into several discs of Φ15 mm using a punching machine to obtain several single-layer titanium mesh sheets. In this embodiment, the number of single-layer titanium meshes is 100.

[0036] Step 2. Configure activation treatment solution

[0037] The activation treatment liquid includes acidic solution and weak alkaline solution. Dissolve hydrofluoric acid and nitric acid in deionized water and stir evenly to obtain an acidic solution; the volume percentages of the hydrofluoric acid and nitric acid are 5% respectively. Dissolve 5.0 g of sodium bicarbonate in 100 ml of deionized water and stir evenly to obtain a weak alkaline solution.

[0038] Step 3. Surfactant treatment

[0039] Put the single-layer titanium mesh prepared ...

Embodiment 2

[0047] A method for preparing porous titanium with equal pore size, comprising the following steps:

[0048] Step 1. Make single-layer titanium mesh

[0049] A single-layer TA1 titanium mesh with a hole diameter of 30 mesh was punched into several discs of Φ20 mm by a punching machine. Several single-layer titanium meshes were obtained. In this embodiment, the number of single-layer titanium meshes is 80.

[0050] Step 2. Configure activation treatment solution

[0051] The activation treatment liquid includes acidic solution and weak alkaline solution. Hydrofluoric acid and nitric acid are dissolved in deionized water and stirred uniformly to obtain an acidic solution; the volume percentage of said hydrofluoric acid and nitric acid is respectively 10%; 5.0g sodium bicarbonate is dissolved in 100ml deionized water and stirred uniformly to obtain Weak alkaline solution.

[0052] Step 3. Surfactant treatment

[0053] Put the single-layer titanium mesh prepared in step 1 in...

Embodiment 3

[0061] A preparation method of an equal-aperture porous titanium alloy, comprising the following steps:

[0062] Step 1. Make single-layer titanium mesh

[0063] A single-layer Ti6Al4V titanium alloy mesh with a hole diameter of 50 mesh was punched into several Φ20mm discs by a punching machine to obtain several single-layer titanium meshes. The number of single-layer titanium mesh is 100.

[0064] Step 2. Configure activation treatment solution

[0065] The activation treatment liquid includes acidic solution and weak alkaline solution. Dissolve hydrofluoric acid and nitric acid in deionized water and stir evenly to obtain an acidic solution; the volume percentages of hydrofluoric acid and nitric acid are respectively 10%, 30%; 10.0g sodium bicarbonate is dissolved in 100ml deionized water and stirred Evenly, a weakly alkaline solution is obtained.

[0066] Step 3. Surfactant treatment

[0067] Put the single-layer titanium mesh prepared in step 1 into the obtained acidi...

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Abstract

The invention relates to a preparation method of a gradient porous titanium alloy. The gradient porous titanium alloy is prepared through the titanium net aperture gradient superposing and vacuum sintering of a raw material regular-pore-form woven titanium or a titanium alloy net. In the invention, the pore form and the pore size of the porous body are controlled through adopting the single-layer titanium net, and the pore size gradient distribution is realized through superposing titanium alloy nets having different pore sizes, so the porous titanium pore size gradient distribution is realized. The elastic modulus and the comprehensive yield strength of the gradient porous titanium are in ranges of 0.66-12.8GPa and 27-364MPa respectively, so the gradient porous titanium is coupled with natural bone in elastic modulus; and the three-dimensional opened microstructure is in favor of the grow-in of bone tissues, so the application range of the porous titanium can be widened. The preparation method has the characteristics of easy control of the preparation technology, suitableness for the large-scale industrial production, and stable mechanical properties of the prepared porous body, and reduction of the pollution to the environment.

Description

technical field [0001] The invention relates to the technical field of porous titanium and titanium alloys, in particular to a preparation method of porous titanium and titanium alloys. Background technique [0002] The rise of porous titanium alloy materials is due to the combination of the advantages of titanium alloys and porous materials. As a new type of biological material, compared with bulk materials and titanium alloys with porous surfaces, it has the ability to improve fixation and reduce weight. , reducing the modulus of elasticity properties. Moreover, this low modulus can also alleviate the stress shielding effect and improve the lifetime of biodevices by changing the stress distribution to better adapt to the state of bone tissue. The porous titanium alloy not only achieves porosity on the surface, but also has a porous structure in the entire implant device. This is beneficial for the bone tissue to grow deep into the implant from all angles, and improves th...

Claims

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Application Information

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IPC IPC(8): C22C1/08C22C14/00
Inventor 寇宏超李金山徐广胜唐斌王军周廉
Owner NORTHWESTERN POLYTECHNICAL UNIV
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