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Metal material with modified surface and preparation method and application thereof

A metal material and surface modification technology, applied in metal material coating technology, nanotechnology for materials and surface science, pharmaceutical formulations, etc., can solve the problem that the bonding strength between the coating and the base material cannot be guaranteed, and the scope of application is limited, etc. problem, to achieve the effect of inhibiting bacterial adhesion, promoting proliferation, and simple and easy preparation method

Active Publication Date: 2020-12-22
SHENZHEN INST OF ADVANCED TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the prior art, titanium dioxide coatings with different micro-nano structures are prepared on different substrate materials through the precursor solution of titanium, and the bonding strength between the coating and the substrate material cannot be guaranteed, which limits its application range. Therefore, a It is very meaningful to develop a biomedical material whose coating is not easy to peel off from the substrate surface and has excellent antibacterial properties and tissue growth inducing properties.

Method used

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  • Metal material with modified surface and preparation method and application thereof
  • Metal material with modified surface and preparation method and application thereof
  • Metal material with modified surface and preparation method and application thereof

Examples

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Embodiment 1

[0055] This embodiment provides a surface-modified titanium alloy. The surface-modified titanium alloy includes a titanium alloy substrate and a titanium oxide film with a nano-topological structure formed in situ on the surface of the substrate. Its preparation method is:

[0056] (1) Clean the surface of titanium alloy (TC4, Baoji Junhang Metal Material Co., Ltd.) with acid solution for 30s, then wash it with deionized water for 3 times, and dry it for later use; the preparation method of the acid solution is: Ionized water, 6mL of 48% hydrofluoric acid and 4mL of 48% nitric acid were mixed and diluted 15 times. The surface morphology of the pickled titanium alloy was observed with a scanning electron microscope, as shown in figure 1 shown.

[0057] (2) the above-mentioned titanium alloy (surface area 2826mm 2 ) mixed with 0.18mol / L hydrochloric acid aqueous solution (30mL) and then hydrothermally reacted at 180°C for 4h to in-situ form a titanium oxide film with a nano-...

Embodiment 2

[0059] This embodiment provides a surface-modified titanium alloy. The surface-modified titanium alloy includes a titanium alloy substrate and a titanium oxide film with a nano-topological structure formed in situ on the surface of the substrate. Its preparation method is:

[0060] (1) Clean the surface of the titanium alloy with acid solution for 20 seconds, then wash it twice with deionized water, and dry it for later use; 15 times.

[0061] (2) the above-mentioned titanium alloy (surface area 5652mm 2 ) mixed with 0.01mol / L hydrochloric acid aqueous solution (50mL) and then hydrothermally reacted at 300°C for 30h to form a titanium oxide film with a nano-topological structure on the surface of the titanium alloy in situ, take it out and cool it to 20°C, and wash it with deionized water Washing 5 times and drying to obtain the surface-modified metal material.

Embodiment 3

[0063] This embodiment provides a surface-modified titanium alloy. The surface-modified titanium alloy includes a titanium alloy substrate and a titanium oxide film with a nano-topological structure formed in situ on the surface of the substrate. Its preparation method is:

[0064] (1) Clean the titanium alloy surface with acid solution for 40s, then wash it with deionized water for 5 times, and dry it for later use; the preparation method of the acid solution is: mix 20mL deionized water and 10mL48% nitric acid and dilute it 15 times .

[0065] (2) the above-mentioned titanium alloy (surface area 5652mm 2 ) mixed with 0.5mol / L hydrochloric acid aqueous solution (50mL) and then hydrothermally reacted at 100°C for 2h to form a titanium oxide film with a nano-topological structure on the surface of the titanium alloy in situ, take it out and cool it to 30°C, and wash it with deionized water Washing 5 times and drying to obtain the surface-modified metal material.

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Abstract

The invention relates to a metal material with the modified surface and a preparation method and application thereof. The metal material with the modified surface comprises a metal material matrix andan oxidation film which is formed on the surface of the matrix in an in-situ manner and provided with a nanometer topological structure. According to the preparation method of the metal material, themetal material and an acid solution are mixed and then subjected to a hydrothermal reaction, and thus the metal oxidation film provided with the nanometer topological structure is formed on the surface of the metal material in an in-situ manner. By means of formation of the oxidation film, biocompatibility of the material can be improved remarkably, and the material has a good tissue growth induction ability and good antibacterial performance. The oxidation film is formed on the metal matrix in an in-situ manner, an obvious interface between the oxidation film and the matrix material is avoided, the risk that the oxidation film falls off from the matrix is reduced greatly, bonding strength between a decorating layer and a substrate material is ensured, and the application range of the metal material is enlarged.

Description

technical field [0001] The invention relates to the technical field of material surface modification, in particular to a surface-modified metal material and its preparation method and application, and in particular to a surface-modified titanium-based material and its preparation method and application. Background technique [0002] Biomedical materials are materials used to diagnose, treat, repair or replace diseased tissues and organs, and improve their functions. Many metal or alloy materials, especially titanium and titanium alloys, are widely used in dental implants, artificial joints, and bone trauma due to their excellent biocompatibility, corrosion resistance, excellent comprehensive performance and process performance, and become human hard tissue The material of choice for substitutes and restorations. In order to improve the biological activity, wear / corrosion resistance and blood compatibility of titanium and titanium alloys, surface modification of titanium and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/54B82Y40/00B82Y30/00A61L27/50A61L27/30A61L27/06
CPCC23C22/54B82Y40/00B82Y30/00A61L27/50A61L27/306A61L27/06A61L2400/12A61L2400/18A61L2430/02A61L2430/12
Inventor 王国成杨明刚
Owner SHENZHEN INST OF ADVANCED TECH
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