Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Method for quickly generating apatite on surface of titanium and alloy thereof

A technology of apatite and alloy, which is applied in the direction of surface reaction electrolytic coating, electrolytic coating, coating, etc., can solve the problems of reducing the nucleation ability of apatite, reducing the bonding strength between the film layer and the substrate, and achieving the improvement of hydrophilicity Sexuality, easy promotion, fast effect

Inactive Publication Date: 2009-12-02
SOUTH CHINA UNIV OF TECH +1
View PDF1 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Chinese patent 200410000725.7 discloses a method for a gradient biofilm layer on a metal surface, using an anodic oxidation and micro-arc oxidation combined oxidation method to prepare TiO with a gradient structure of "densified inner layer + uneven porous surface" 2 The dense inner layer of the film layer can effectively prevent the dissolution of harmful metal ions into body fluids, and the porous surface layer is conducive to the growth of bone tissue; however, the film layer prepared by this method needs subsequent hydrothermal treatment on the surface to obtain bone-like apatite, and oxidation The electrolyte solution needs to be replaced during the process, and the subsequent hydrothermal treatment will reduce the bonding strength between the film layer and the substrate
Densified TiO 2 The tablet forms apatite on its surface in simulated body fluid under ultraviolet light irradiation, but due to TiO 2 The dense structure of the pressed pellets results in a reduced ability to nucleate apatite on its surface

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for quickly generating apatite on surface of titanium and alloy thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A method for quickly generating apatite on the surface of titanium and its alloys is to irradiate ultraviolet light on the basis of low-voltage micro-arc oxidation. The method includes the following steps and process conditions:

[0029] Step 1: Low Voltage Micro-arc Oxidation

[0030] (1) Divide 10×10×1mm 3 The titanium sheet is polished to smooth with 180#, 280#, 360#, 600#, 800#, 1000# sandpaper in turn, and then ultrasonically cleaned with 99.5% acetone, 99.7% absolute ethanol, and deionized water for 20 minutes;

[0031] (2) Deionized water is mixed with sodium dihydrogen phosphate and calcium acetate to prepare electrolyte solutions containing phosphate ions and calcium ions, so that the concentration of phosphate ions in the electrolyte solution is 0.02mol / L, and the concentration of calcium ions is 0.10 mol / L;

[0032] (3) With titanium sheet as the anode and stainless steel as the cathode, a DC pulse power supply is used, the micro-arc oxidation voltage is 10...

Embodiment 2

[0037] A method for quickly generating apatite on the surface of titanium and its alloys is to irradiate ultraviolet light on the basis of low-voltage micro-arc oxidation. The method includes the following steps and process conditions:

[0038] Step 1: Low Voltage Micro-arc Oxidation

[0039] (1) Divide 10×10×1mm 3 The titanium sheet is polished to smooth with 180#, 280#, 360#, 600#, 800#, 1000# sandpaper in turn, and then ultrasonically cleaned with 99.5% acetone, 99.7% absolute ethanol, and deionized water for 20 minutes;

[0040] (2) Deionized water is mixed with β-sodium glycerophosphate and calcium acetate to prepare electrolyte solutions containing phosphate ions and calcium ions, so that the concentration of phosphate ions in the electrolyte solution is 0.05mol / L, and the concentration of calcium ions is 0.20mol / L;

[0041] (3) With titanium sheet as the anode and stainless steel as the cathode, a DC pulse power supply is used, the micro-arc oxidation voltage is 200V,...

Embodiment 3

[0046] A method for quickly generating apatite on the surface of titanium and its alloys is to irradiate ultraviolet light on the basis of low-voltage micro-arc oxidation. The method includes the following steps and process conditions:

[0047] Step 1: Low Voltage Micro-arc Oxidation

[0048](1) Polish the Ф4×10mm titanium alloy rod (Ti6Al4V) with 180#, 280#, 360#, 600#, 800#, 1000# sandpaper in sequence until smooth, and then use 99.5% acetone, 99.7% absolute ethanol, Ultrasonic cleaning with deionized water for 20 minutes each;

[0049] (2) Deionized water is mixed with β-sodium glycerophosphate and calcium acetate to prepare electrolyte solutions containing phosphate ions and calcium ions, so that the concentration of phosphate ions in the electrolyte solution is 0.10mol / L, and the concentration of calcium ions is 0.30mol / L;

[0050] (3) Titanium alloy rods are used as anodes, stainless steel is used as cathodes, a DC pulse power supply is used, the micro-arc oxidation vo...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
strengthaaaaaaaaaa
strengthaaaaaaaaaa
strengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to a method for modification on the surface of a medical metal material, in particular to a method for quickly generating apatite on the surface of titanium and alloy thereof. The method carries out ultraviolet irradiation based on low-voltage micro arc oxidation. The micro arc oxidation voltage is 100 to 400 volts, and the time is 5 to 20 minutes; the temperature of electrolyte solution is kept between 30 and 40 DEG C during oxidation, the frequency is 50 to 100Hz, and the duty factor is 5 to 30 percent; and the intensity of ultraviolet light is 400 to 700 watts, the distance between the titanium and alloy thereof and a light source is 30 to 40 centimeters, and the irradiation time is 20 minutes to 2 hours. A titanium dioxide film layer with a compact inner layer and a porous outer layer is generated on the surface of the titanium metal, and the titanium dioxide film layer is soaked in simulated body fluid to directly induce and generate the bone-like apatite in short time so as to save post treatment. Compared with the prior art, the method has the advantages of simple process, high speed of generating the apatite, low energy consumption, low cost, simple and convenient operation, and easy popularization.

Description

technical field [0001] The invention relates to a method for modifying the surface of medical metal materials, in particular to a method for quickly generating apatite on the surface of titanium and its alloys. Background technique [0002] Pure titanium and its alloys are widely used in the replacement of hard tissues such as joints, teeth, and bones in the human body because of their excellent biocompatibility, mechanical properties, corrosion resistance, and good machinability. They are all inert materials. After being implanted into the human body, there are generally problems such as poor biological activity, low bonding strength with growing bone, and long healing time. The titanium dioxide film on the surface of titanium is only a dense passivation layer. Although it has certain biocompatibility, it has almost no biological activity, and the ability to induce phosphate deposition is extremely poor, or even unable to induce. The reaction is mainly the reaction between...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/26A61L27/32A61L27/06
Inventor 王迎军宁成云程海梅郑华德马强张德贵
Owner SOUTH CHINA UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com