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Silicon-doped medical pure titanium surface porous bioactive coating and preparation method thereof

A bioactive, surface-porous technology, applied in the field of biomedical materials, can solve the problems of unsatisfactory biological activity and insufficient strength, and achieve the effects of inducing adhesion and proliferation, improving hydrophilic properties, and enhancing surface energy.

Inactive Publication Date: 2018-07-24
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problems of insufficient strength and unsatisfactory biological activity of medical pure titanium materials at present, and use pure titanium materials and ultra-fine-grained pure titanium materials prepared by equal-channel corner extrusion deformation as base materials to invent a method based on micro-arc oxidation. Silicon-doped medical pure titanium surface porous bioactive coating for promoting early osseointegration and preparation method thereof

Method used

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  • Silicon-doped medical pure titanium surface porous bioactive coating and preparation method thereof
  • Silicon-doped medical pure titanium surface porous bioactive coating and preparation method thereof
  • Silicon-doped medical pure titanium surface porous bioactive coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032](1) Put pure titanium (TA2) in B C Equal-channel angular extrusion deformation was carried out in the same way, and the extrusion temperature was 450°C. B here C The method refers to the extrusion method in which the workpiece is rotated 90° in the same direction after each extrusion, and then undergoes the next extrusion. After a total of four extrusion passes, the ultra-fine-grained pure titanium material (ECAP TA2) is obtained.

[0033] (2) First, the ultra-fine-grained pure titanium material is wire-cut into a round cake shape with a thickness of 2mm, and then polished with 150#, 200#, 500#, 800#, 1000#, 2000#, 5000# sandpaper step by step to remove the test pieces. The oxide layer on the surface of the sample was cleaned until there was no obvious scratch, and the polished ultra-fine-grained pure titanium material was ultrasonically cleaned in acetone, alcohol, and deionized water for 15 minutes, and dried for later use.

[0034] (3) Pour the weighed analytically ...

Embodiment 2

[0037] (1) Put pure titanium (TA2) in B C Equal-channel angular extrusion deformation was carried out in the same way, and the extrusion temperature was 450°C. B here C The method refers to the extrusion method in which the workpiece is rotated 90° in the same direction after each extrusion, and then undergoes the next extrusion. After a total of four extrusion passes, the ultra-fine-grained pure titanium material (ECAP TA2) is obtained.

[0038] (2) First, the ultra-fine-grained pure titanium material is wire-cut into a round cake shape with a thickness of 2mm, and then polished with 150#, 200#, 500#, 800#, 1000#, 2000#, 5000# sandpaper step by step to remove the test pieces. The oxide layer on the surface of the sample was cleaned until there was no obvious scratch, and the polished ultra-fine-grained pure titanium material was ultrasonically cleaned in acetone, alcohol, and deionized water for 15 minutes, and dried for later use.

[0039] (3) Pour the weighed analytically...

Embodiment 3

[0042] (1) Put pure titanium (TA2) in B C Equal-channel angular extrusion deformation was carried out in the same way, and the extrusion temperature was 450°C. B here C The method refers to the extrusion method in which the workpiece is rotated 90° in the same direction after each extrusion, and then undergoes the next extrusion. After a total of four extrusion passes, the ultra-fine-grained pure titanium material (ECAP TA2) is obtained.

[0043] (2) First, the ultra-fine-grained pure titanium material is wire-cut into a round cake shape with a thickness of 2mm, and then polished with 150#, 200#, 500#, 800#, 1000#, 2000#, 5000# sandpaper step by step to remove the test pieces. The oxide layer on the surface of the sample was cleaned until there was no obvious scratch, and the polished ultra-fine-grained pure titanium material was ultrasonically cleaned in acetone, alcohol, and deionized water for 15 minutes, and dried for later use.

[0044] (3) Pour the weighed analytically...

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Abstract

The invention provides a silicon-doped medical pure titanium surface porous bioactive coating and a preparation method thereof, and belongs to the technical field of biomedical materials. According tothe bioactive coating and the preparation method, composite system solutions with sodium silicate, sodium polyphosphate and calcium acetate are used as electrolytes, and micro-arc oxidation treatmentis carried out by taking a titanium base material as a positive electrode and by taking a stainless steel working groove as a negative electrode; and the temperature of the electrolyte is kept between 10-30 DEG C, and the current density is 8-30 A / dm2, the oxidation time is 2-20 minutes, the frequency ranges from 200 Hz to 1200 Hz, and the duty ratio is 5-40%. According to the bioactive coating and the preparation method, the porous bioactive coating is good in hydrophilicity and high in surface energy, and contains silicon, calcium and phosphorus; and in order to solve the problems that thetraditional medical pure-titanium mechanical strength is low, the biological activity is insufficient, and the requirement of the clinical application is difficult to meet, and the simple, rapid and low-energy efficient preparation method is provided and has a wide application prospect in the fields of biomedical materials and the like.

Description

technical field [0001] The invention relates to the technical field of biomedical materials, in particular to a silicon-doped medical pure titanium surface porous bioactive coating and a preparation method thereof. Background technique [0002] At present, the medical metal materials for force-bearing implants widely used in orthopedic clinics mainly include stainless steel, pure titanium, Co-Cr alloy, titanium alloy (Ti-6Al-4V, TiNi), etc. However, except for pure titanium materials, these materials all contain harmful elements (such as Ni, Cr, Co, Al, etc.), which will bring certain potential dangers to the human body. However, when pure titanium is used in artificial joints, fasteners, dental implants and other occasions, there is a problem of insufficient strength. [0003] In order to improve the mechanical strength of pure titanium while avoiding the introduction of alloying elements, scholars started by refining the grains of pure titanium to develop a new generation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/26C22F1/18A61L27/06A61L27/30A61L27/56
CPCA61L27/06A61L27/306A61L27/56A61L2400/18A61L2420/02A61L2430/02C22F1/183C25D11/026C25D11/26
Inventor 徐琳吴聪许晓静丁建宁张坤刘春成何远清雷小春
Owner JIANGSU UNIV
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