A kind of preparation method of micro-nano composite structure on the surface of titanium material

A technology of micro-nano composite structure and micro-nano structure, which is applied in the field of metal biomaterials and biomaterials, can solve the problems of unfavorable cell adhesion, easy peeling, and low bonding strength of the matrix, and achieve bioactivity and biocompatibility. Membrane Increased base binding force, beneficial to osseointegration

Inactive Publication Date: 2020-05-08
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many ways to prepare micro-nano structures on the surface of implants, such as acid etching plus anodic oxidation, sandblasting acid etching plus anodic oxidation, etc., but the residual particles after sandblasting may have adverse effects on osseointegration. The edge of the pit after sand acid etching is sharp, which is not conducive to cell adhesion
In addition, the coating obtained by acid etching and anodic oxidation has the disadvantages of low bonding strength with the substrate and easy peeling off.

Method used

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  • A kind of preparation method of micro-nano composite structure on the surface of titanium material
  • A kind of preparation method of micro-nano composite structure on the surface of titanium material
  • A kind of preparation method of micro-nano composite structure on the surface of titanium material

Examples

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Effect test

Embodiment １

[0032] Micro-nano structures are prepared on pure titanium with a size of 10mm*10mm*1mm.

[0033] (1) Polish the pure titanium sheet with a specification of 10mm*10mm*1mm with 800#, 1000#, 1500#, 2000# water-resistant silicon carbide sandpaper in sequence, then ultrasonically clean it in acetone and ethanol for 30 minutes, and finally use Deionized water cleaning, drying;

[0034] (2) Micro-arc oxidation: use a pulsed DC power supply to perform micro-arc oxidation on the polished pure titanium titanium material. The oxidation conditions are: voltage 270V, pulse frequency 100Hz, duty cycle 50%, electrode spacing 4cm, with 0.2 A mixed solution of mol / L calcium acetate and 0.1mol / L sodium dihydrogen phosphate was used as the electrolyte, the oxidation time was 3 minutes, and the temperature of the electrolyte was controlled at 15°C. After the micro-arc oxidation was completed, the titanium material was cleaned with deionized water and dried. , under the field emission scanning e...

Embodiment 2

[0042] Micro-nano structures are prepared on pure titanium with a size of 10mm*10mm*1mm.

[0043] (1) Polish the pure titanium sheet with a specification of 10mm*10mm*1mm with 800#, 1000#, 1500#, 2000# water-resistant silicon carbide sandpaper in sequence, then ultrasonically clean it in acetone and ethanol for 30 minutes, and finally use Deionized water cleaning, drying;

[0044] (2) Micro-arc oxidation: Use a pulsed DC power supply to perform micro-arc oxidation on the polished pure titanium titanium material. The oxidation conditions are: voltage 300V, pulse frequency 100Hz, duty cycle 50%, electrode spacing 4cm, with 0.2 A mixed solution of mol / L calcium acetate and 0.1mol / L sodium dihydrogen phosphate is used as the electrolyte, the oxidation time is 3 minutes, and the temperature of the electrolyte is controlled at 15°C. After the micro-arc oxidation is completed, the titanium material is cleaned with deionized water and dried;

[0045] (3) Acid etching: Corrode the tit...

Embodiment 3

[0049] Micro-nano structures are prepared on pure titanium with a size of 10mm*10mm*1mm.

[0050] (1) Polish the pure titanium sheet with a specification of 10mm*10mm*1mm with 800#, 1000#, 1500#, 2000# water-resistant silicon carbide sandpaper in sequence, then ultrasonically clean it in acetone and ethanol for 30 minutes, and finally use Deionized water cleaning, drying;

[0051] (2) Micro-arc oxidation: Use a pulsed DC power supply to perform micro-arc oxidation on the polished titanium material. The oxidation conditions are: voltage 330V, pulse frequency 100Hz, duty cycle 50%, electrode spacing 4cm, and 0.2 A mixed solution of mol / L calcium acetate and 0.1mol / L sodium dihydrogen phosphate is used as the electrolyte, the oxidation time is 3 minutes, and the temperature of the electrolyte is controlled at 15°C. After the micro-arc oxidation is completed, the titanium material is cleaned with deionized water and dried;

[0052] (3) Acid etching: Corrode the titanium material ...

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Abstract

The invention relates to the field of biological materials, in particular to a preparing method for a titanium material surface micro-nano composite structure. The method sequentially comprises the four steps including titanium material pretreatment, titanium material micro-arc oxidation treatment, acid etching treatment after titanium material micro-arc oxidation and anode oxidization after titanium material acid etching, and the uniform micro-nano composite structure can be prepared on the surface of the titanium material. The component composition of the structure is titanium oxide, and noother impurities exist. The structure edge is flat and smooth, cell adhering and climbing are facilitated, the specific surface area is large, the bonding strength is high, excellent biocompatibilityis achieved, and good application prospects are achieved.

Description

technical field [0001] The invention relates to the field of biomaterials, in particular to a surface modification method in the field of metal biomaterials. Background technique [0002] Titanium metal is widely used in human bone replacement materials because of its high specific strength, good biocompatibility and excellent corrosion resistance. However, titanium itself lacks biological activity, and it is easy to be poorly combined with bone tissue, loosen or even fall off after being implanted in the human body. Therefore, the surface modification of implants to make them have good biological activity is the research focus of hard tissue implant materials. [0003] As an important factor affecting the biological activity of implants, surface topography and structure have been extensively studied by scholars at home and abroad. The study found that using surface modification to prepare micro-nano structures on the surface of the implant to simulate human bone tissue ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D11/26C23F1/26
CPCC23F1/26C25D11/026C25D11/26
Inventor 李宝娥张贤琳郝静祖周琳熙李海鹏梁春永王洪水
Owner HEBEI UNIV OF TECH
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