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A kind of surface micro-nano structure modification method of titanium and titanium alloy

A modification method and micro-nano structure technology, applied in the field of titanium and titanium alloy surface treatment in metal surface treatment, can solve the problems of easy infection, poor osseointegration ability, etc., to avoid drug side effects, good binding performance, and good osseointegration effect of ability

Active Publication Date: 2020-07-10
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems of poor osseointegration ability and easy infection of titanium and its alloy implants, the present invention proposes to improve osseointegration ability and antibacterial ability by constructing a micro-nano-scale composite structure on its surface

Method used

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  • A kind of surface micro-nano structure modification method of titanium and titanium alloy
  • A kind of surface micro-nano structure modification method of titanium and titanium alloy
  • A kind of surface micro-nano structure modification method of titanium and titanium alloy

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Experimental program
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Effect test

Embodiment 1

[0028] Embodiment 1: pure titanium surface micro-nano structure modification

[0029] Step 1: Femtosecond laser machining of microcolumn periodic structure on pure titanium surface

[0030] 1-1 After the surface of the medical-grade pure titanium sample is sanded and polished, it is ultrasonically cleaned with acetone, absolute ethanol and deionized water for 15 minutes, and finally placed in an oven to dry for later use.

[0031] 1-2 Put the cleaned pure titanium sample into the femtosecond laser processor, and control the sample stage through the program to realize the scanning irradiation processing on the surface of the sample. The processing parameters are: femtosecond laser pulse energy is 2.1J / cm 2 , the scanning speed is 400mm / s, the number of scanning is 30, and the scanning interval is adjusted to 40μm, the processing of the micro-column periodic structure on the surface of pure titanium can be realized. The height of the microcolumns is 70 μm.

[0032] Step 2: Pr...

Embodiment 2

[0040] Embodiment 2: Ti5Zr alloy surface micro-nano structure modification

[0041] Step 1: Femtosecond laser machining of micro-column periodic structure on the surface of Ti5Zr alloy

[0042] 1-1 After the surface of the Ti5Zr alloy is sanded and polished, it is ultrasonically cleaned with acetone, absolute ethanol and deionized water for 15 minutes, and finally placed in an oven for drying.

[0043] 1-2 Put the cleaned Ti5Zr alloy sample into the femtosecond laser processor, and control the sample stage through the program to realize scanning irradiation processing on the surface of the sample. The processing parameters are: femtosecond laser pulse energy is 2.1J / cm 2 , the scanning speed is 400mm / s, the number of scanning is 30, and the scanning interval is adjusted to 40μm, the processing of the micro-column periodic structure on the surface of pure titanium can be realized. The height of the microcolumns is 70 μm.

[0044] Step 2: Preparation of nanotubes by anodic ox...

Embodiment 3

[0051] Embodiment 3: Ti15Zr alloy surface micro-nano structure modification

[0052] 1-1 After sanding and polishing the surface of the Ti15Zr alloy, use acetone, absolute ethanol and deionized water to ultrasonically clean it for 15 minutes, and finally put it in an oven to dry for later use.

[0053] 1-2 Put the cleaned Ti15Zr alloy sample into the femtosecond laser processor, and control the sample stage through the program to realize scanning irradiation processing on the surface of the sample. The processing parameters are: femtosecond laser pulse energy is 2.1J / cm 2 , the scanning speed is 400mm / s, the number of scanning is 30, and the scanning interval is adjusted to 40μm, the processing of the micro-column periodic structure on the surface of pure titanium can be realized. The height of the microcolumns is 70 μm.

[0054] Step 2: Preparation of nanotubes by anodic oxidation on the periodic structure of microcolumns on the surface of pure titanium

[0055] 2-1 Clean ...

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Abstract

Metal titanium and titanium alloy are widely applied to implants of oral prosthodontics, orthopedic surgery and plastic surgery at present, but have the problems of having poor osseous integration capability and being prone to have bacterial infection after implantation. The invention discloses a titanium and titanium alloy surface micro-nano structure modification method, and aims to improve theosseous integration capability and antibacterial capability of titanium and titanium alloy surfaces. The micro-nano structure modification method is characterized in that a femtosecond laser processing technology is adopted, the polished titanium alloy surface is ablated to form a micropost periodic structure with the spacing and the depth not greater than 200 microns, nanotubes with the diameterssmaller than 200 nm are prepared on the micropost periodic structure in an anodic oxidation mode after further acid pickling, and then annealing heat treatment is carried out to obtain a final sample. According to the method, the surface with a micro-nano structure can be prepared on the titanium and titanium alloy surfaces, and the titanium and the titanium alloy with such surfaces have good biocompatibility and antibacterial capability.

Description

technical field [0001] The invention belongs to the technical field of titanium and titanium alloy surface treatment in metal surface treatment, and relates to a surface processing method with antibacterial performance and osseointegration promotion performance. Background technique [0002] Metal titanium and its alloys are widely used in the repair and replacement of hard tissues such as orthopedics and dentistry because of their good mechanical properties, corrosion resistance and biocompatibility. However, due to the biological inertness of titanium alloy itself in clinical applications, its osseointegration performance is not ideal, which often leads to cases of surgical failure caused by device loosening after implantation. Moreover, it is easy to cause bacteria to adhere to the surface of the implant during the implantation process, causing bacterial infection, which further causes inflammation of the surrounding tissues of the implant and thus fails to achieve succes...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K26/00B23P15/00C22F1/18C25D11/26
Inventor 姚生莲王鲁宁陈颖芝盛治慧
Owner UNIV OF SCI & TECH BEIJING
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