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Titanium oxide composite coating and preparation method thereof

A technology of composite coating and titanium oxide, which is applied in the direction of coating, surface reaction electrolytic coating, metal material coating technology, etc., to achieve good antibacterial properties, fast proliferation rate, and accelerate the recovery of patients

Active Publication Date: 2014-06-04
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

How to modify the nanoparticles of nutritional elements required by the human body on the surface modification coating of the implant has not been reported yet.

Method used

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  • Titanium oxide composite coating and preparation method thereof
  • Titanium oxide composite coating and preparation method thereof
  • Titanium oxide composite coating and preparation method thereof

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preparation example Construction

[0036] The invention provides a method for preparing a titanium-based implant coating with both antibacterial and osteoblast proliferation-promoting properties, wherein medical titanium metal or alloy is used as the base material, and micro-arc oxidation technology is used to prepare porous coatings on the surface of the base material in advance. The titanium oxide coating is then implanted with iron ions into the surface and subsurface of the titanium oxide coating by a plasma immersion implantation process to form a composite titanium oxide coating modified with iron oxide nanoparticles.

[0037] The present invention first adopts micro-arc oxidation technology to generate porous titanium oxide coating in situ in a specific electrolyte, and then uses plasma immersion ion implantation technology for secondary modification to form a titanium oxide composite coating modified by iron oxide nanoparticles , the method comprises the following steps and process conditions:

[0038] ...

Embodiment 1

[0063] (a) Using deionized water, mix 0.018 mol / L sodium silicate nonahydrate, 0.037 mol / L sodium glycerophosphate and 0.050 mol / L sodium hydroxide 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 0.125A / cm 2 , Voltage 390 ~ 420V, frequency 800Hz, duty cycle ± 10% under the conditions of treatment for 2min, keep the electrolyte temperature below 60 ℃. (c) After the sample was taken out, it was rinsed in deionized water and dried naturally. (d) Put the sample into the immersion plasma immersion ion implantation vacuum chamber, and pump it to 5×10 -3 After Pa, iron ion implantation was performed for 60 minutes under the parameters of implantation voltage 30 kV, frequency 7 Hz, and pulse width 500 μs. After testing, the thickness of the coating is about 3-15 μm, and the element composition is mainly Ti, O, Si, P, Fe. X-ray diffraction analysis shows that the p...

Embodiment 2

[0072] (a) Using deionized water, mix 0.018 mol / L sodium silicate nonahydrate, 0.037 mol / L sodium glycerophosphate and 0.050 mol / L sodium hydroxide 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 0.125A / cm 2 , Voltage 390 ~ 420V, frequency 800Hz, duty cycle ± 10% under the conditions of treatment for 2min, keep the electrolyte temperature below 60 ℃. (c) After the sample was taken out, it was rinsed in deionized water and dried naturally. (d) Put the sample into the submerged plasma injection vacuum chamber and pump it to 5×10 -3 After Pa, iron ion implantation was performed for 30 minutes under the parameters of implantation voltage 30 kV, frequency 7 Hz, and pulse width 500 μs. After testing, the thickness of the coating is about 3-15 μm, and the element composition is mainly Ti, O, Si, P, Fe. X-ray diffraction analysis shows that the phase composition o...

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Abstract

The invention relates to a titanium oxide composite coating and a preparation method thereof. The titanium oxide composite coating comprises a porous titanium oxide coating formed in situ on the surface of a titanium-based metal base material by virtue of a micro-arc oxidation technique, and ferric oxide nanoparticles mixed with the porous titanium oxide coating by virtue of a plasma-immersion ion implantation technique, wherein the content of the iron element in the titanium oxide composite coating ranges from 1% to 15%. The invention also provides a method for preparing the titanium oxide composite coating, and the method comprises the steps of (1) forming the porous titanium oxide coating in situ on the surface of the titanium-based metal base material by virtue of the micro-arc oxidation technique, and (2) implanting iron ions into the titanium oxide coating by virtue of the plasma-immersion ion implantation technique to form the ferric oxide nanoparticle modified titanium oxide composite coating.

Description

technical field [0001] The invention relates to a titanium oxide composite coating and a preparation method thereof, in particular to a titanium oxide composite coating obtained by surface modification, and a method for preparing the coating by using micro-arc oxidation technology and plasma immersion ion implantation technology . Background technique [0002] Titanium and its alloys are widely used as bone tissue repair and replacement materials due to their low elastic modulus, excellent biocompatibility, corrosion resistance and mechanical properties. However, since bacteria may be brought into the surrounding environment during the implantation process and cause postoperative infections such as osteomyelitis, how to inhibit the adhesion and reproduction of bacteria on the surface of implant materials has become one of the hot spots in the research of implant materials. The titanium oxide coating grown in situ on the substrate induces the formation of bone-like apatite [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C28/04C25D11/26C23C14/48C23C14/08
Inventor 刘宣勇田雅馨
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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