A silicon-doped porous nano-titanium oxide coating and its preparation method

A nano-titanium oxide and silicon doping technology, which is applied in coatings, surface reaction electrolytic coatings, electrolytic coatings, etc., can solve the problem that the performance of titanium oxide coatings needs to be improved, and achieves easy popularization and application, simple preparation process, good quality The effect of biocompatibility

Active Publication Date: 2016-08-03
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in some in-depth biochemical performance indicators, such as promotion of cell proliferation, differentiation, specific protein adsorption, growth factor and gene expression, etc., the performance of titanium oxide coating still needs to be improved.

Method used

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  • A silicon-doped porous nano-titanium oxide coating and its preparation method
  • A silicon-doped porous nano-titanium oxide coating and its preparation method
  • A silicon-doped porous nano-titanium oxide coating and its preparation method

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Embodiment 1

[0032] (a) Using deionized water, mix 0.1 mol / L sodium silicate, 0.05 mol / L calcium acetate and 0.05 mol / L sodium glycerophosphate to prepare an electrolyte solution. (b) With titanium as the anode and stainless steel as the cathode, a DC pulse power supply is used at a constant current density of 0.01A / cm 2 , Voltage 350 ~ 420V, frequency 800Hz, duty cycle 10% under the conditions of treatment for 3min, keep the electrolyte temperature below 60 ℃. (c) After the sample was taken out, it was rinsed in deionized water and dried naturally. After testing, the thickness of the coating is about 5-8 μm, and the element composition is mainly Ti, O, Si, Ca and P. X-ray diffraction analysis shows that the coating phase composition is mainly anatase and rutile. EDS results show that the silicon element in the coating is The content is about 12.3wt%. SEM analysis shows that the pore size of the coating is less than 10μm, and the grain size is 10-80nm. MG63 cells can rapidly adhere, spre...

Embodiment 2

[0034] (a) Using deionized water, mix 0.04mol / L sodium silicate, 0.1mol / L calcium acetate and 0.05mol / L sodium glycerophosphate to prepare an electrolyte solution. (b) With titanium as the anode and stainless steel as the cathode, a DC pulse power supply is used at a constant current density of 1A / cm 2 , The voltage is 500-540V, the frequency is 800Hz, and the duty cycle is 10% for 4 minutes, and the temperature of the electrolyte is kept below 60°C. (c) After the sample was taken out, it was rinsed in deionized water and dried naturally. After testing, the thickness of the coating is about 20-30 μm, and the element composition is mainly Ti, O, Si, Ca and P. X-ray diffraction analysis shows that the coating phase composition is mainly anatase and rutile. EDS results show that the silicon element in the coating is The content is about 3.6wt%. SEM analysis shows that the pore size of the coating is less than 15μm, and the grain size is 20-90nm. MG63 cells can rapidly adhere, s...

Embodiment 3

[0036] (a) Using deionized water, mix 0.08 mol / L sodium silicate, 0.2 mol / L calcium acetate, 0.05 mol / L sodium glycerophosphate and 0.1 mol / L sodium hydroxide to prepare an electrolyte. (b) With titanium as the anode and stainless steel as the cathode, a DC pulse power supply is used at a constant current density of 0.6A / cm 2 , Voltage 400-480V, frequency 1000Hz, duty cycle 30% under the conditions of treatment for 10min, keep the electrolyte temperature below 60 ℃. (c) After the sample was taken out, it was rinsed in deionized water and dried naturally. After testing, the thickness of the coating is about 25-40 μm, and the element composition is mainly Ti, O, Si, Ca and P. X-ray diffraction analysis shows that the coating phase composition is mainly rutile and anatase. EDS results show that the silicon in the coating is The element content is about 8.7wt%. SEM analysis shows that the pore size of the coating is less than 20μm, and the grain size is 40-100nm. MG63 cells can ...

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Abstract

The invention relates to a silicon-doped porous nano-titanium oxide coating and a preparation method thereof, belonging to the technical field of medical bioceramic coatings and nanometer materials. The coating of the present invention has a porous nano-crystalline structure and is closely combined with the substrate. The coating phase is mainly composed of pure anatase or anatase / rutile composite phase, and the content of silicon in the coating is in the range of 0.01 to 25 wt%. controllable. The invention adopts micro-arc oxidation technology, and in a specific electrolyte, directly forms a silicon-doped porous nano-titanium oxide coating on the surface of titanium or titanium alloy in situ in one step, which can be used as artificial bone, artificial joint and dental implant, etc. parts.

Description

technical field [0001] The invention relates to a silicon-doped porous nano-titanium oxide coating and a preparation method thereof, belonging to the technical field of medical bioceramic coatings and nanometer materials. Background technique [0002] In recent years, the development and application of various biomedical materials have developed rapidly. Among them, titanium and its alloys are widely used as surgical implant materials due to their low elastic modulus, excellent mechanical properties and biocompatibility. Studies have shown that the excellent biocompatibility of titanium and its alloys is mainly due to a layer of titanium oxide film naturally formed on its surface in the air. Therefore, the application of titanium oxide in the field of biomaterials has gradually received attention. However, the bioinert nature of TiO makes it difficult to effectively induce new bone formation in vivo, hindering its clinical application. [0003] Studies have shown that in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61L27/30A61L27/06A61L27/56C25D11/26
Inventor 胡红杰刘宣勇丁传贤
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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