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Method for forming graded multi-hole shape on titanium surface

A technique of hierarchical porosity and morphology, which is applied in the field of hierarchical porous morphology on the surface of titanium, can solve the problems of energy consumption, limited to micron-scale pores or only nano-scale pores, and the limitation of pore structure size changes, so as to improve biological activity, The effect of improving stability

Inactive Publication Date: 2012-07-18
SHANGHAI NINTH PEOPLES HOSPITAL AFFILIATED TO SHANGHAI JIAO TONG UNIV SCHOOL OF MEDICINE +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above technical schemes give the surface modification treatment method of pure titanium, although they can achieve certain effects, but the electrochemical experiment is carried out by using the micro-arc oxidation method. The high voltage method not only consumes energy, but also the pore size range of the porous structure formed on the surface It is limited to micron-scale pores or only nano-scale pores, so the size change of the pore structure is limited; while only shot peening and acid etching are used, the surface lacks thicker ionic compounds with high biochemical stability bound by ionic bonds Floor

Method used

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  • Method for forming graded multi-hole shape on titanium surface
  • Method for forming graded multi-hole shape on titanium surface
  • Method for forming graded multi-hole shape on titanium surface

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1. Method 1 of forming hierarchical porous morphology on titanium surface

[0029] A After the pure titanium sample is finely ground and polished, it is ultrasonically cleaned once with absolute ethanol, acetone, and deionized water, each time for 15 minutes. After degreasing and cleaning, dry it.

[0030] B Use 100 to 150 mesh glass balls to carry out shot peening treatment on the surface of the titanium sample. The shot peening pressure is 0.30 to 0.60Mpa. The surface is uniform blue-gray, ultrasonically cleaned with acetone and deionized water, and dried.

[0031] C The sample after the shot peening treatment is etched with oxalic acid with a concentration of 10wt%. nanoscale pore structure.

[0032] D The pure titanium sample after the shot blasting and acid etching treatment is treated by anodic oxidation method, the titanium sample is used as the anode for anodic oxidation treatment, and the graphite plate is used as the cathode, and the electrochemic...

Embodiment 2

[0034] Embodiment 2. Method two of forming hierarchical porous morphology on titanium surface

[0035] A After the pure titanium sample is finely ground and polished, it is ultrasonically cleaned once with absolute ethanol, acetone, and deionized water, each time for 20 minutes. After degreasing and cleaning, dry it.

[0036] B Use 100 to 150 mesh glass balls to carry out shot peening treatment on the surface of the titanium sample. The shot peening pressure is 0.30 to 0.60Mpa. The surface is uniform blue-gray, ultrasonically cleaned with acetone and deionized water, and dried.

[0037] C The sample after shot peening treatment is etched with oxalic acid with a concentration of 5wt%. nanoscale pore structure.

[0038] D The pure titanium sample after the shot blasting and acid etching treatment is treated by anodic oxidation method, the titanium sample is used as the anode for anodic oxidation treatment, and the graphite plate is used as the cathode, and the electrochemical ...

Embodiment 3

[0040] Embodiment 3. Method three for forming hierarchical porous morphology on titanium surface

[0041] A After the pure titanium sample is finely ground and polished, it is ultrasonically cleaned twice with absolute ethanol, acetone, and deionized water in sequence, each time for 10 minutes. After degreasing and cleaning, dry it.

[0042] B Use 100 to 150 mesh glass balls to carry out shot peening treatment on the surface of the titanium sample, the shot peening pressure is 0.30 to 0.60Mpa, the spray gun and the titanium surface are axially 60°C during the shot peening process, the spray distance is 5cm, and the shot peening reaches the titanium sample The surface is uniform blue-gray, ultrasonically cleaned with acetone and deionized water, and dried.

[0043]C The sample after the shot peening treatment is etched with oxalic acid with a concentration of 15wt%. nanoscale pore structure.

[0044] D The pure titanium sample after the shot blasting and acid etching treatmen...

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Abstract

The invention discloses a method for forming a graded multi-hole shape on the titanium surface, which is used for surface treatment of a pure titanium biological material and comprises the steps of titanium sample polishing and cleaning, shot blasting treatment, acid etching, anodic oxidation and ultrasonic cleaning. The graded multi-hole shape with biological activity and a thick ionic compound TiO2 layer formed by combining ionic bonds and with high biological chemical stability are formed on the pure titanium surface. The method combines the acid etching and anodic oxidation, wherein micron-sized holes and sporadic micron-sized holes are formed through shot blasting treatment, many evenly-distributed micron-sized holes are produced through anodic oxidation reaction, and the thick ionic compound TiO2 layer is formed. The method for forming the graded multi-hole shape on the titanium surface greatly improves the biological activity of the pure titanium surface and the stability of pure titanium.

Description

technical field [0001] The invention relates to a biomedical metal implant material and a method for surface modification treatment thereof, in particular to a method for forming hierarchical porous morphology on a titanium surface. Background technique [0002] Pure titanium has excellent biocompatibility, corrosion resistance and excellent mechanical properties, and samples of various shapes and tissue structures can be prepared by various methods. Therefore, pure titanium and titanium alloys are widely used in biomedicine, such as dental implants, various bone and joint prostheses, and bone plates. However, pure titanium has disadvantages such as low biological activity and long-term clinical application, so it needs to be surface modified. At present, there is a consensus that surfaces with hierarchical porous topography are more conducive to osteoblast growth. [0003] Modifying and activating the surface of titanium metal makes the surface have good biological activi...

Claims

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Application Information

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IPC IPC(8): C23F17/00
Inventor 徐立群金学军赵晶妹张陈平
Owner SHANGHAI NINTH PEOPLES HOSPITAL AFFILIATED TO SHANGHAI JIAO TONG UNIV SCHOOL OF MEDICINE
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