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Preparation method of titanium surface multilevel porous structure

A technology with multi-level pores and mass concentration, applied in the direction of surface reaction electrolytic coating, electrolytic coating, coating, etc., can solve the problems of low bone tissue bonding strength, low bioactivity of titanium and titanium alloys, etc., to promote bonding and improve Osteoblast function, effect of contact promotion

Inactive Publication Date: 2013-10-23
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims to solve the problems that the existing titanium surface has no titanium dioxide and no tertiary pore structure, which leads to low bioactivity of titanium and titanium alloys, and low bonding strength with bone tissue, and provides a method for preparing a multi-level pore structure on the titanium surface

Method used

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  • Preparation method of titanium surface multilevel porous structure
  • Preparation method of titanium surface multilevel porous structure
  • Preparation method of titanium surface multilevel porous structure

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specific Embodiment approach 1

[0012] Specific embodiment one: the method for preparing the titanium surface hierarchical porous structure in this embodiment is carried out through the following steps: 1. The titanium material is polished step by step with 240 mesh, 600 mesh and 1000 mesh metallographic sandpaper, and then successively use Ultrasonic cleaning with acetone and absolute ethanol for 10 to 15 minutes and drying to obtain the treated titanium material; 2. Sandblasting the titanium material treated in step 1 with alumina particles; 3. Sandblasting the titanium material after the sandblasting treatment Soak in a sulfuric acid solution with a mass concentration of 40% to 60% at 40°C to 60°C for 30 to 60 minutes to obtain an acid-etched titanium material; 4. Use the acid-etched titanium material as the anode and platinum as the cathode , placed in NH with a mass concentration of 1-2 g / L 4 F aqueous solution, under the voltage of 20 ~ 30V, anodize treatment for 20 ~ 30min, obtain the titanium materia...

specific Embodiment approach 2

[0015] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the titanium material is pure titanium or titanium alloy. Others are the same as the first embodiment.

[0016] The pure titanium in this embodiment is industrial pure titanium TA1, TA2, TA3 or TA4.

specific Embodiment approach 3

[0017] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the particle size of alumina particles in the oxygen sand blasting treatment in the step two is 100-500 μm, the treatment air pressure is 50-60KPa, and the sand blasting time is 1 ~2min. Others are the same as those in Embodiment 1 or 2.

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Abstract

In order to solve the problems that existing titanium and titanium alloys have low bioactivity and low bonding strength with bone tissues, the invention relates to a preparation method of a titanium surface multilevel porous structure. The method comprises: 1. polishing a titanium material by 240-mesh, 600-mesh and 1000-mesh metallographical sandpaper hierarchically, then performing ultrasonic cleaning with acetone and alcohol in order at room temperature, and conducting drying so as to obtain a treated titanium material; 2. carrying out sand blasting treatment with aluminum oxide particles; 3. soaking the titanium material subjected to the sand blasting treatment in a sulfuric acid solution; 4. taking the acid-etched titanium material as the anode, and taking platinum as the cathode, placing them in an NH4F aqueous solution, and conducting anodic oxidation treatment, thus obtaining the anode oxidized titanium material; and 5. cleaning the anode oxidized titanium material with an NaOH solution, deionized water and anhydrous ethanol, and performing drying, thus obtaining the titanium surface multilevel porous structure with high bioactivity and high bonding strength with bone tissues. The method provided in the invention is applied in the biomedical field.

Description

technical field [0001] The invention relates to a method for preparing a titanium surface hierarchical porous structure. Background technique [0002] Titanium and titanium alloys are widely used in the biomedical field to manufacture hard tissue repair materials such as artificial joints, bone nails, and dental implants because of their good biocompatibility, corrosion resistance, and comprehensive mechanical properties. However, in actual use, because titanium and titanium alloys are biologically inert and have poor osteoinductivity, their bonding strength with bone tissue is low, which easily causes problems such as implant loosening and difficult wound healing. In order to solve this problem, surface modification of titanium and titanium alloys to improve their bioactivity and bonding strength with bone tissue has become a research hotspot. [0003] Sandblasting and acid etching is a surface modification technique widely used in dental implants, and its process is simpl...

Claims

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Application Information

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IPC IPC(8): C25D11/26
Inventor 魏大庆冯唯周睿成夙周玉
Owner HARBIN INST OF TECH
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