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Preparation method for in-situ forming of hexagonal phosphorspath coating on surface of titanium-based nanotube

A technology of hexagonal flakes and nanotubes is applied in the field of preparation of in-situ formation of hexagonal flake apatite coating on the surface of titanium-based nanotubes, which can solve the problems of high temperature, lack of chemical action, large internal stress, etc.

Active Publication Date: 2018-05-25
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] There is a lack of chemical interaction between the plasma sprayed apatite and the substrate, and the elastic modulus difference between the titanium substrate and the apatite is large, and the temperature is high during preparation, which is easy to form a large internal stress

Method used

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  • Preparation method for in-situ forming of hexagonal phosphorspath coating on surface of titanium-based nanotube
  • Preparation method for in-situ forming of hexagonal phosphorspath coating on surface of titanium-based nanotube
  • Preparation method for in-situ forming of hexagonal phosphorspath coating on surface of titanium-based nanotube

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Take a 1cm × 1cm pure titanium sheet and polish it with silicon carbide sandpaper from 400 mesh, 800 mesh, 1200 mesh, and 1500 mesh in sequence until the surface is smooth, ultrasonicate in acetone, ethanol and deionized water for 10 minutes in sequence, and dry it for later use. Take 30 g of glycerol and deionized water respectively, add 0.06 g of ammonium fluoride to form a glycerin / deionized water / ammonium fluoride system electrolyte, use polished and smooth titanium as the anode, platinum as the cathode, and a voltage of 25 V Anodized in the electrolyte for 2 h under the same conditions, the samples were taken out, washed with deionized water, dried naturally and then placed in a muffle furnace, heated from room temperature to 400 °C at a heating rate of 2 °C / min. Cool down (see pictures of titanium nanotubes Figure 1 ). The sample was placed in a calcium chloride polyvinyl alcohol aqueous solution with a concentration of 0.1 M, placed in a vacuum oven, evacuated ...

Embodiment 2

[0021] Take a 2cm × 1cm pure titanium sheet and polish it with silicon carbide sandpaper from 400 mesh, 800 mesh, 1200 mesh, and 1500 mesh in sequence until the surface is smooth, ultrasonicate in acetone, ethanol and deionized water for 10 minutes in sequence, and dry it for later use. Take 40 g of glycerol and deionized water respectively, add 0.08 g of ammonium fluoride to form a glycerin / deionized water / ammonium fluoride system electrolyte, use polished and smooth titanium as the anode, platinum as the cathode, and a voltage of 25 V Anodized in the electrolyte for 3 h under the same conditions, the samples were taken out, washed with deionized water, dried naturally, then placed in a muffle furnace, and heated from room temperature to 350 °C at a heating rate of 1 °C / min. Cool down. Place the sample in a calcium chloride polyvinyl alcohol aqueous solution with a concentration of 0.05 M, place it in a vacuum oven, evacuate to 20 Pa at 37°C, take it out after holding the pre...

Embodiment 3

[0023] Take a 1cm × 1cm pure titanium sheet and polish it with silicon carbide sandpaper from 400 mesh, 800 mesh, 1200 mesh, and 1500 mesh in sequence until the surface is smooth, ultrasonicate in acetone, ethanol and deionized water for 10 minutes in sequence, and dry it for later use. Take 10 g of glycerol and deionized water respectively, add 0.02 g of ammonium fluoride to form a glycerin / deionized water / ammonium fluoride system electrolyte, use a polished and smooth titanium sheet as the anode, and a platinum sheet as the cathode, with a voltage of 25 V Anodized in the electrolyte for 1 h under the same conditions, the samples were taken out, washed with deionized water, dried naturally, then placed in a muffle furnace, heated from room temperature to 400 °C at a heating rate of 3 °C / min, and kept for 2 h. Cool down. Place the sample in a calcium chloride polyvinyl alcohol aqueous solution with a concentration of 0.2 M, place it in a vacuum oven, evacuate to 30 Pa at 37°C,...

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Abstract

The invention relates to a preparation method for in-situ forming of a hexagonal phosphorspath coating on the surface of a titanium-based nanotube. The preparation method comprises the following steps: firstly, forming a titanium nanotube on the surface of a titanium material by using electrochemical anodic oxidation; secondly, preparing a polyvinyl alcohol aqueous solution of calcium salt, putting a sample into the polyvinyl alcohol aqueous solution of the calcium salt, carrying out vacuum treatment and drying; slowly raising the temperature for sintering and immobilizing calcium in or on thesurface of the titanium nanotube; thirdly, vertically putting the titanium-based nanotube subjected to calcium treatment into a prodromal calcium and phosphorus solution containing urea; adding urease, and controlling temperature and reaction time, to obtain an apatite crystal coating on the surface of the titanium-based nanotube. According to the preparation method for the in-situ forming of thehexagonal phosphorspath coating on the surface of the titanium-based nanotube, disclosed by the invention, the hexagonal phosphorspath coating on the surface of the titanium can be rapidly formed under mild conditions; the preparation process has the advantages of stability, low cost and capability of rapidly realizing mass production. The preparation method for in-situ forming of the hexagonal phosphorspath coating on the surface of the titanium-based nanotube, disclosed by the invention, has broad application value in bone implant materials, surface modification of dental implant, promotionof rapid bone integration and the like.

Description

technical field [0001] The invention belongs to the surface treatment technology of bone implants and dental implants, and in particular relates to a preparation method for in-situ formation of a hexagonal flaky apatite coating on the surface of titanium-based nanotubes that can promote rapid osseointegration of implants. Background technique [0002] Implant dentures have become the first choice for the restoration of missing teeth because their height is similar to that of natural teeth. However, when the host's systemic or local conditions are not good, implants are required to have better results than current materials. Surface treatments such as sandblasting, acid etching, oxidation, and coating on dental implants can significantly promote osseointegration, and a large number of surface-treated commercial implant systems have been introduced to the market in the past 20 years. Implant surface modification is still an important means to improve its biological performance...

Claims

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Application Information

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IPC IPC(8): C30B7/14C30B29/64C30B29/14C25D11/26A61L27/06A61L27/32A61L27/50B82Y40/00
CPCA61L27/06A61L27/32A61L27/50A61L2400/18A61L2420/02B82Y40/00C25D11/26C30B7/14C30B29/14C30B29/64
Inventor 黄棣姚蔚杜晶晶魏延胡银春连小洁王楷群陈维毅
Owner TAIYUAN UNIV OF TECH
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