Fast preparation of titanium or titanium alloy surface biological active coating

A biologically active, titanium alloy technology, applied in metal material coating process, coating, superimposed layer plating, etc., can solve problems such as long production cycle, achieve easy operation, simple equipment, and increased coating formation rate Effect

Inactive Publication Date: 2006-11-01
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

Its disadvantages are: the production cycle is long, it takes about a few weeks

Method used

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  • Fast preparation of titanium or titanium alloy surface biological active coating
  • Fast preparation of titanium or titanium alloy surface biological active coating
  • Fast preparation of titanium or titanium alloy surface biological active coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The Ti-28Nb-8Zr-2Sn sample was polished by 100#, 400#, 800#, and 1000# silicon carbide sandpaper respectively, then soaked in 60°C, 5M KOH solution for 24 hours, and then blown in air at 0-30°C. Dry.

[0040] The alkali-treated Ti-28Nb-8Zr-2Sn sample was heated to 600°C in a box-type resistance furnace, kept for 1 hour and then cooled with the furnace. The heating rate was 5°C / min.

[0041] Prepare a high ion concentration calcium and phosphorus solution according to Table 1, and use 10mM NaHCO 3 The pH of the solution was adjusted to 6.5.

[0042] Reagent

[0043] Soak the alkali-treated and heat-treated Ti-28Nb-8Zr-2Sn sample in the above solution at room temperature (18±8°C) for 2 to 24 hours to obtain a spherical hydroxyapatite layer (see figure 1 , figure 2 ), the thickness of the coating is 2-100 μm, and the X-ray diffraction pattern of the spherical hydroxyapatite coating is shown in Figure 8 .

Embodiment 2

[0045] The Ti-6Al-4V samples were polished by 100#, 400#, 800#, and 1000# silicon carbide sandpaper respectively, then soaked in 3M KOH solution at 30°C for 24 hours, and then dried in air at 0-30°C.

[0046] The alkali-treated Ti-6Al-4V sample was heated to 600°C in a box-type resistance furnace, kept for 1 hour and then cooled with the furnace. The heating rate was 5°C / min.

[0047] Prepare a high ion concentration calcium and phosphorus solution according to Table 1, and use 10mM NaHCO 3 The pH of the solution was adjusted to 6.5.

[0048] Soak the Ti-6Al-4V sample after alkali treatment and heat treatment in the above solution at 37°C for 2-24h. Soak for 6h to get spherical hydroxyapatite layer see image 3 , the thickness of the coating is about 50μm, soaked for 24h to get a spherical hydroxyapatite layer see Figure 4 , Figure 5 , and its coating thickness is 50-100 μm. The X-ray diffraction pattern of the spherical hydroxyapatite coating is shown in Figure 8 . ...

Embodiment 3

[0050] The commercial pure titanium samples were polished by 100#, 400#, 800#, and 1000# silicon carbide sandpaper respectively, then soaked in 1M KOH solution at 80°C for 2 hours, and then dried in air at 0-30°C.

[0051] The commercially pure titanium sample after alkali treatment was heated to 600°C in a box-type resistance furnace, kept for 0.5 hours and then cooled with the furnace. The heating rate is 3°C / min.

[0052] Prepare a high ion concentration calcium and phosphorus solution according to Table 1, and use 10mM NaHCO 3 The pH of the solution was adjusted to 7.

[0053] Soak the commercially pure titanium sample after alkali treatment and heat treatment in the above solution at room temperature for 2 to 24 hours. Soaked for 24h to obtain spherical hydroxyapatite layer figure 1 Similarly, its coating thickness is about 100 μm.

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Abstract

A timesaving method for preparing biological active coating on titanium or titanium alloy which includes the following steps: alkaline treatment and heat treatment were applied to titanium alloy to form a potassium titanate film on it; soak it in Ca-P solution with high ion concentration (>1000mM) for 2 to 24h to deposit a agustite layer with 2 to 100 mum thickness. The current invention has the following advantages: it adopts high concentration Ca-P solution to substitute various buffer solution; no need to inlet CO2 before soaking; agustite layer with 2 to 100 mum thickness forms in room temperature and the velocity was improved; coating with different thickness is available; even coating can be prepared on different bases.

Description

technical field [0001] The invention relates to the fields of surface treatment and biotechnology, in particular to a method for rapidly preparing a bioactive coating on the surface of titanium or titanium alloy. Background technique [0002] Among biomedical metal materials, titanium and its alloys have good mechanical properties, corrosion resistance and good biocompatibility. With its excellent comprehensive properties, titanium and its alloys have become the most popular products for artificial joints (hip, knee, shoulder, ankle, elbow, wrist, knuckles, etc.), orthopedic trauma products (intramedullary nails, plates, screws, etc.), spinal orthopedic internal fixation System, dental implant, dental tray, dental orthopedic wire, artificial heart valve, interventional cardiovascular stent and other medical implant products, see reference [1]: He Baoming, Wang Yulin, Dai Zhenghong. Biomedical titanium and its Development and application progress, market situation and proble...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C30/00C23C28/00
Inventor 郑彩云李述军郝玉琳杨锐
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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