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Preparation method of pure titanium surface modified nano titanium dioxide film layer

A technology for surface modification of nanometer and nanometer titanium dioxide, applied in the field of medical titanium alloy, can solve the problems of single surface film layer, insufficient stability, low bonding strength between film and substrate, etc. corrosive effect

Pending Publication Date: 2022-07-05
SHENYANG JIANZHU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the surface modification method of titanium alloy mainly adopts the oxidation method, but the performance of the surface film prepared by this method is single, and the bonding strength between the formed film and the substrate is low, and the stability is not enough.

Method used

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  • Preparation method of pure titanium surface modified nano titanium dioxide film layer
  • Preparation method of pure titanium surface modified nano titanium dioxide film layer
  • Preparation method of pure titanium surface modified nano titanium dioxide film layer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) The preparation method is as follows:

[0030] 1. Soak the titanium substrate in a mixed solution of hydrochloric acid and sulfuric acid with a mass ratio of 1:3 for 30 minutes to remove the oxide scale on the surface, then rinse it with a large amount of deionized water, and then ultrasonically clean it in absolute ethanol for 15 minutes. The surface was blown dry with high-purity nitrogen. Then, the titanium substrate is used as the anode and the graphite electrode is used as the cathode to be connected to the two poles of the DC voltage stabilized power supply respectively, and the voltage of the power supply is adjusted to 20V and the current to -1 HNO 3 In the solution, the titanium substrate was anodized for 15 minutes while magnetic stirring, and rinsed with a large amount of deionized water after taking it out; then the anodized titanium plate was placed in a furnace, preheated at 70 °C for 2 hours, and then heated to calcined at 490 °C for 3 hours, and th...

Embodiment 2

[0041] The titanium substrate was soaked in a mixed solution of hydrochloric acid and sulfuric acid with a mass ratio of 1:3 for 40 minutes to remove the oxide scale on the surface, then rinsed with a large amount of deionized water, and then ultrasonically cleaned in absolute ethanol for 20 minutes. Pure nitrogen blows the surface dry. Then connect the titanium substrate as the anode and the graphite electrode as the cathode to the two poles of the DC stabilized power supply respectively, adjust the power supply voltage to 15V, the current to 0.5A, and the current to be 0.05mol·L. -1 HNO 3 In the solution, the titanium substrate was anodized for 20 minutes while magnetic stirring, and then rinsed with a large amount of deionized water. calcined at 490 °C for 3.5 hours, and then calcined the titanium sheet at 0.05 mol·L -1 The acetaminophen solution was soaked in ethanol solution for 4 hours, then taken out and calcined in a furnace at 120 °C for 30 minutes, and then at 0.01...

Embodiment 3

[0043] Soak the titanium substrate in a mixed solution of hydrochloric acid and sulfuric acid with a mass ratio of 1:3 for 30 minutes to remove the oxide scale on the surface, then rinse it with a large amount of deionized water, then ultrasonically clean it in absolute ethanol for 20 minutes, and use high Pure nitrogen blows the surface dry. Then, the titanium substrate is used as the anode and the graphite electrode is used as the cathode to be connected to the two poles of the DC voltage stabilized power supply respectively, and the voltage of the power supply is adjusted to 20V and the current to -1 HNO 3 In the solution, the titanium substrate was anodized for 25 minutes while magnetic stirring, and then rinsed with a large amount of deionized water. calcined at 480 °C for 3.5 hours, and then calcined the titanium sheet at 0.05 mol·L -1 The acetaminophen solution was soaked in ethanol for 3 hours, then taken out and calcined in a furnace at 110 °C for 30 minutes, follow...

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Abstract

The invention belongs to the technical field of medical titanium alloys, and particularly relates to a preparation method of a pure titanium surface modified nano titanium dioxide film layer. According to the preparation method, an anodic oxidation method, an impregnation method and a constant potential reduction method are adopted respectively, the pure titanium surface is sequentially treated, an anatase nanometer titanium dioxide film doped with nanometer silver particles, silver ions and acetaminophen is obtained on the titanium surface, the film directly grows on the surface of a titanium substrate in situ, and the titanium substrate is prepared. The microstructure of the film is in a nanotube shape, and doped nano-silver, silver ions and acetaminophen can be kept for at least 18 days in a phosphate buffer solution. According to the preparation method of the pure titanium surface modified nano titanium dioxide film layer, chemical, physical and electrochemical methods are combined, and the modified nano titanium dioxide film layer with sterilization, anti-inflammation and analgesia performance can be obtained through direct in-situ growth on a titanium base.

Description

technical field [0001] The invention belongs to the technical field of medical titanium alloys, and particularly relates to a preparation method of a pure titanium surface-modified nano-titanium dioxide film. Background technique [0002] Due to the excellent mechanical properties, corrosion resistance and biocompatibility of titanium and its alloys, they are widely used as hard tissue replacement materials in the human body, such as dental roots, prostheses and other implants. However, osseointegration, but its poor osteoconductivity leads to premature failure, so it is necessary to modify its surface before it can be used as an implant. The efficacy of titanium-based implants is determined by the chemical composition, morphology and microstructure of its surface, and surface modification can improve the surface characteristics and biocompatibility of titanium-based materials. Titanium-based materials are surface-modified to optimize their overall properties. [0003] At ...

Claims

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Application Information

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IPC IPC(8): C25D11/26A61L27/06A61L27/30A61L27/50A61L27/54A61L27/28
CPCC25D11/26A61L27/06A61L27/306A61L27/50A61L27/54A61L27/28A61L2430/12A61L2430/02A61L2400/12A61L2300/104A61L2300/404A61L2300/41A61L2300/45A61L2300/606A61L2300/204
Inventor 万晔梁腾腾李艳波朱旭
Owner SHENYANG JIANZHU UNIVERSITY
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