A preparation method of titanium dioxide film coating on the surface of titanium alloy microporous bone

A technology of titanium dioxide and alloy micropores, which is applied in the field of medical bioactive composite materials, can solve the problems of high manufacturing cost, intensified corrosion of alloy surface, failure to achieve ideal clinical application effect, etc., and achieve low cost and simple method.

Inactive Publication Date: 2016-01-20
南京捷科生物科技有限公司
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0003] However, when Ti 6 A1 4 When the V alloy artificial bone is in the human body fluid environment for a long time, a defensive and protective titanium dioxide film will be formed spontaneously on its surface, and the generated TiO2 2 The film has poor stability and durability, and is likely to be peeled off or even dissolved in the human body, resulting in Ti 6 A1 4 The toxic elements A1 and V in the V alloy are precipitated, and with this layer of TiO 2 Destruction of the film, Ti 6 A1 4 The corrosion effect on the surface of V alloy will be intensified
due to Ti 6 A1 4 The problems of wear, corrosion and implant infection in V alloy often lead to the failure of artificial bone implants
[0004] Currently, various Ti 6 A1 4 None of the surface modification methods of V alloys can achieve the ideal clinical application effect. The main problem is that the surface bonding strength is not enough or the manufacturing cost is high.

Method used

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  • A preparation method of titanium dioxide film coating on the surface of titanium alloy microporous bone

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0018] 1. First adjust the molar ratio TiPT (titanium isopropoxide): C 3 h 8 O (anhydrous isopropanol): HCL (hydrochloric acid): H 2 O (water)=1.0:9.1:0.15:1.1 Stir with a magnetic stirrer for 20 minutes, and keep the temperature at 0 0 C aged for 12 hours.

[0019] 2. Then put Ti 6 A1 4 The V alloy microporous bone was immersed in the above titanium solution for 24 hours, and its temperature was kept at 15 0 c.

[0020] 3. Then Ti 6 A1 4 V alloy microporous bone samples with a size of 10mm*30mm*1mm were soaked in 40ml of 0.5mol / l nitric acid solution for 10 days, and the temperature was kept at 50 0 c.

[0021] 4. Ti 6 A1 4 The V alloy microporous bone sample was slowly taken out of the nitric acid aqueous solution at a speed of about 3 cm / min and cooled at room temperature.

[0022] The thickness of the titanium dioxide film coating on the surface of Ti6A14V alloy microporous bone is 8.48 μm as measured by scanning electron microscope JEM-1400 / 1011. Ti was obtai...

example 2

[0025] 1. First adjust the molar ratio TiPT (titanium isopropoxide): C 3 h 8 O (anhydrous isopropanol): HCL (hydrochloric acid): H 2 O (water)=1.0:9.1:0.15:1.1 stirred for 20 minutes with a magnetic stirrer, and its temperature was kept at 10 0 C aging for 15 hours.

[0026] 2. Then put Ti 6 A1 4 The V alloy microporous bone was immersed in the above titanium solution for 36 hours, and its temperature was kept at 20 0 c.

[0027] 3. Then Ti 6 A1 4 The V alloy microporous bone sample size is 10mm*30mm*1mm, soaked in 40ml of 0.5mol / l nitric acid solution for 12 days, and the temperature is kept at 60 0 c.

[0028] 4. Ti 6 A1 4 The V alloy microporous bone sample was slowly taken out of the nitric acid aqueous solution at a speed of about 3 cm / min and cooled at room temperature.

[0029] The product was determined by scanning electron microscope JEM-1400 / 1011, Ti 6 A1 4 The thickness of titanium dioxide film coating on the surface of V alloy microporous bone is 10.8...

example 3

[0031] 1. First adjust the molar ratio TiPT (titanium isopropoxide): C 3 h 8 O (anhydrous isopropanol): HCL (hydrochloric acid): H 2 O (water)=1.0:9.1:0.15:1.1 Stir with a magnetic stirrer for 20 minutes, and keep the temperature at 15 0 C aged for 18 hours.

[0032] 2. Then put Ti 6 A1 4 The V alloy microporous bone was immersed in the above titanium solution for 48 hours, and its temperature was kept at 25 0 c.

[0033] 3. Then Ti 6 A1 4 The size of V alloy microporous bone sample is 10mm*30mm*1mm, soaked in 40ml of 0.5mol / l nitric acid solution for 15 days, and the temperature is kept at 70 0 c.

[0034] 4. Ti 6 A1 4 The V alloy microporous bone sample was slowly taken out of the nitric acid aqueous solution at a speed of about 3 cm / min and cooled at room temperature.

[0035] The product was determined by scanning electron microscope JEM-1400 / 1011, Ti 6 A1 4 The thickness of titanium dioxide film coating on the surface of V alloy microporous bone is 14.98 μm....

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Abstract

The invention relates to a preparation method of a titanium dioxide thin film coating on the surface of a titanium alloy microporous bone. A titanium dioxide thin film with defense and protection effects, formed on a Ti6Al4V alloy artificial bone in a human body fluid environment, is poor in stability and durability, resulting in separation of toxic elements Al and V in the Ti6Al4V alloy. According to the preparation method provided by the invention, TiPT (Titanium Isopropoxy), C3H8O (anhydrous isopropanol), HCL (Hydrochloric Acid) and H2O (water) are uniformly mixed in a certain molar ratio and aged to obtain a titanium dioxide (TiO2) sol. The titanium dioxide thin film coating is synthesized on the surface of the titanium alloy microporous bone by a dipping extraction method. The produced TiO2 can provide effective anti-corrosive protection to a substrate, enhance the corrosion resistance of the material and well prevent the surface of the Ti6Al4V alloy from being peeled. The TiO2 thin film prepared by the method is simple in method and low in cost and has a potential application value in the biomedical field.

Description

technical field [0001] The invention relates to a medical bioactive composite material, in particular to a method for preparing a titanium dioxide film coating on the surface of a titanium alloy microporous bone. Background technique [0002] Ti 6 A1 4 V alloy has high specific strength, excellent corrosion resistance, high temperature creep resistance and non-magnetic properties. It is currently the most commonly used biomedical material for artificial bone implants and surgical instruments. [0003] However, when Ti 6 A1 4 When the V alloy artificial bone is in the human body fluid environment for a long time, a defensive and protective titanium dioxide film will be formed spontaneously on its surface, and the generated TiO2 2 The film has poor stability and durability, and is likely to be peeled off or even dissolved in the human body, resulting in Ti 6 A1 4 The toxic elements A1 and V in the V alloy are precipitated, and with this layer of TiO 2 Destruction of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C20/08
Inventor 鄢腊梅周盛华袁友伟
Owner 南京捷科生物科技有限公司
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