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Preparation method of double-layer titanium dioxide nanotube thin film with pear-shaped structure

A technology of titanium dioxide and nanotubes, which is applied in the field of double-layered titanium dioxide nanotube films, can solve the problems that nanotube films have not been reported, and achieve the effects of facilitating new bone formation, easy promotion and application, and promoting adhesion

Inactive Publication Date: 2013-12-11
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far, there has been no report on the preparation of nanotube films with pear-shaped structures on "valve metal" substrates.

Method used

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  • Preparation method of double-layer titanium dioxide nanotube thin film with pear-shaped structure
  • Preparation method of double-layer titanium dioxide nanotube thin film with pear-shaped structure
  • Preparation method of double-layer titanium dioxide nanotube thin film with pear-shaped structure

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Example 1: The pure titanium sheet (TA2) with a size of 10 × 10 × 1 mm was polished and polished with 400#, 600#, 800#, 1000# metallographic sandpaper in sequence, and then ultrasonically cleaned with acetone, absolute ethanol and deionized water for 5 min; at 0.3 wt% NH 4 F, 2 vol% H 2 In the ethylene glycol electrolyte of O, the sample was subjected to one-step in-situ step-up anodizing treatment as follows: the applied voltage was increased from 0 V to 40 V and then maintained for 80 min, and then increased from 40 V to 80 V and maintained for 40 min. The DC step-up mode is adopted in the boosting process, and the boosting rate is selected as 2 V / min; that is, the step is 2 V, and it is kept for 1 min under each voltage condition. After electrolysis, the samples were ultrasonically cleaned with absolute ethanol and deionized water, heat treated at 500 °C for 2 h, and cooled in the furnace. Scanning electron microscope observation shows that the surface of the oxi...

Embodiment 2

[0026] Example 2: The pure titanium sheet (TA1) with a diameter of 15 mm was polished and polished with 400#, 600#, 800#, 1000# metallographic sandpaper in sequence, and then ultrasonically cleaned with acetone, absolute ethanol, and deionized water for 5 min respectively; 0.2 wt% NH 4 F, 6 vol% H 2 In the ethylene glycol electrolyte of O, the samples were subjected to one-step in-situ step-up anodizing treatment as follows: the applied voltage was raised from 0 V to 20 V and kept for 3.5 h, and then raised from 20 V to 50 V and kept for 50 min. The DC linear boost mode is adopted in the boost process, and the boost rate is selected as 15 V / min. After electrolysis, the samples were ultrasonically cleaned with absolute ethanol and deionized water, heat treated at 450 °C for 2.5 h, and cooled in the furnace. Scanning electron microscope observation shows that the surface of the oxide film is closely arranged, and the opening diameter is 80 nm. 0.61 μm, the outer diameter of...

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Abstract

The invention relates to a preparation method of a double-layer titanium dioxide nanotube thin film with a pear-shaped structure. The double-layer titanium dioxide nanotube thin film is prepared by immersing medical titanium in an ethanediol electrolyte solution containing 0.1 to 0.9wt% of NH4F and 0 to 10vol% of H2O for one-step in-situ boost anodic oxidation. The preparation method comprises following steps: firstly, an anodic oxidation voltage is raised from 0V to 20-40V, and is kept for 80min to 6h; then the anodic oxidation voltage is continuously raised to 50-90V, and is kept for 10min to 1h; and at last the double-layer titanium dioxide nanotube thin film with the pear-shaped structure is formed on the surface of the medical titanium. The preparation method is simple and quick, is convenient for operation, is possible to be used in the fields of surface modification of titanium-based implants used in orthopaedics, dentistry, plastic surgery departments, and is capable of reducing risks of failure after implanting and increasing osseointegration ability of the implants.

Description

technical field [0001] The invention relates to the electrochemical surface modification treatment of medical titanium, and forms a double-layer titanium dioxide nanotube film with a pear-shaped structure on the surface through a one-step in-situ step-up anodic oxidation treatment process, which is expected to be applied in orthopedics, dentistry, or plastic surgery The field of surface modification of titanium-based implants reduces the risk of failure after implantation and improves the osseointegration ability of implants. Background technique [0002] Titanium and titanium alloys are widely used in hard tissue replacement fields such as orthopedics and dentistry because of their good machinability, biocompatibility, strong corrosion resistance and low elastic modulus. implant material. However, titanium is very easy to form a dense titanium dioxide oxide film during the production process, showing biological inertness: titanium metal does not form a chemical bond with t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/26A61L27/42B82Y30/00B82Y40/00
Inventor 廖晓明徐鸿尹光福
Owner SICHUAN UNIV
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