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Bioactive coating on surface of Titanium or titanium alloy and its preparing method

A bioactive, titanium alloy technology, applied in the direction of coating, etc., can solve the problem of many steps, and achieve the effect of simple operation, improved binding force and cell attachment ability, and simple equipment

Inactive Publication Date: 2008-11-05
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that there are many steps in the production process

Method used

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  • Bioactive coating on surface of Titanium or titanium alloy and its preparing method
  • Bioactive coating on surface of Titanium or titanium alloy and its preparing method
  • Bioactive coating on surface of Titanium or titanium alloy and its preparing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] After the Ti-24Nb-4Zr-7.9Sn sample was polished by 100#, 400#, 800# silicon carbide sandpaper, respectively, in acid solution (HNO 3 :HF:H 2 (0=4:1:100) (according to volume ratio), after ultrasonic cleaning for 2 min, rinse with distilled water three times, and dry in air.

[0045] With stainless steel as the cathode and Ti-24Nb-4Zr-7.9Sn sample as the anode, it is oxidized in calcium acetate solution, the concentration of calcium acetate solution is 0.15M, the pH value of the solution is 8-9, the voltage is 225v, and the working time for 10 minutes, then rinsed with distilled water and dried in air. After the above oxidation treatment, the surface morphology of the Ti-24Nb-4Zr-7.9Sn alloy is porous (see Figures 1 and 2), and the main component is TiO 2 , CaO; X-ray analysis results see image 3 , XPS analysis results are shown in Figure 4.

[0046] Soak the oxidized Ti-24Nb-4Zr-7.9Sn sample in NaOH solution, the concentration of the solution in this example is 3M,...

Embodiment 2

[0053] The difference from Example 1 is:

[0054] Commercially pure Ti samples were polished with 100#, 400#, and 800# silicon carbide sandpaper, respectively, and then washed in acid solution (HNO 3 :HF:H 2 (0=4:1:100) (according to volume ratio), after ultrasonic cleaning for 2 min, rinse with distilled water three times, and dry in air.

[0055] Using stainless steel as the cathode and commercial pure Ti sample as the anode, oxidize in calcium acetate solution, the concentration of calcium acetate solution is 0.1M, the voltage is 225v, the working time is 5min, then rinse with distilled water and dry in the air. After the above oxidation treatment, the surface morphology of the commercially pure Ti sample is porous (see Figure 9 ), and there are CaO particles; the results of energy spectrum analysis are shown in Figure 10 .

[0056] Soak the commercially pure Ti sample after oxidation treatment in NaOH solution, the concentration of the solution in this example is 1M,...

Embodiment 3

[0061] The difference from Example 1 is:

[0062] After the Ti6Al4V alloy samples were polished with 100#, 400#, 800# silicon carbide sandpaper respectively, they were washed in acid solution (HNO 3 :HF:H 2 (0=4:1:100) (according to volume ratio), after ultrasonic cleaning for 2 min, rinse with distilled water three times, and dry in air.

[0063] Using stainless steel as the cathode and Ti6Al4V alloy sample as the anode, oxidize in calcium acetate solution, the concentration of calcium acetate solution is 0.2M, the voltage is 180v, the working time is 5min, then rinse with distilled water and dry in the air. After the above oxidation treatment, the surface morphology of the Ti6Al4V alloy sample is porous and CaO particles exist.

[0064] Soak the oxidized Ti6Al4V alloy sample in NaOH solution, the concentration of the solution in this example is 5M, keep the temperature at 80° C., and soak for 3 hours. Then rinse with distilled water and dry at 40°C.

[0065] The alkali-t...

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Abstract

The present invention relates to bioactive coating on the surface of titanium or titanium alloy and its preparation process. The process includes the following steps: the first anode oxidation, alkali treatment and heat treatment of titanium or titanium alloy to form surface gradient coating in the thickness of 3 micron and comprising one inner thin and compact titania film and one outer porous titania film; introducing Ca element by means of the electrolyte solution into the coating to raise the biocompatibility; boiling in NaOH solution for 1-5 hr to form thin surface sodium titanate and calcium titanate layer; and final depositing a bone-like hydroxyapatite layer. The present invention raises the bioactivity of titanium or titanium alloy surface, and has high binding force of hydroxyapatite layer and high cell adhering capacity.

Description

technical field [0001] The invention relates to the technical field of surface treatment, in particular to a biologically active coating on the surface of titanium or titanium alloy and a preparation method thereof, which rapidly improves the biological activity of the surface of titanium or titanium alloy through the method of anodic oxidation combined with alkali treatment. Background technique [0002] Titanium and titanium alloys have the advantages of high human compatibility, low density, low elastic modulus, corrosion resistance to body fluids, and excellent mechanical properties. Their inert titanium oxide films can exist stably in physiological environments, especially their low elasticity. Modulus. Among the metal materials used for human hard tissue repair, the elastic modulus of titanium is the closest to that of human bones, about 80-110GPa, which can reduce the shielding effect caused by the large difference between the modulus of the implant and the bone, and r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61L27/32
Inventor 陶晓杰郭正晓李述军郝玉琳杨锐
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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