Reduced titanium oxide coating and preparation method and application thereof

A titanium oxide and coating technology, which is applied to reduced titanium oxide coatings, reduced titanium oxide coatings containing hydroxyl groups and trivalent titanium and their preparation fields, can solve the problem of reduced surface hydrophilicity and easy occurrence of Bacterial infection, weakened biological activity and other problems, to achieve the effect of promoting adhesion and proliferation

Active Publication Date: 2019-08-30
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, the titanium oxide formed on the surface of the titanium implant is still biologically inert, and the surface of the implant will inevitably be polluted by hydrocarbons in the air during storage, resulting in a decrease in surface hydrophilicity and weakened biological activity. and the titanium implant lacks antibacterial properties, and bacterial infection is prone to occur after surgery, which eventually leads to implant failure, as disclosed in Swedish Patent Application No. 99019474-7, Swedish Patent Application No. 0001202-1 and WO2005055860 to obtain porous and rough surfaces Methods

Method used

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  • Reduced titanium oxide coating and preparation method and application thereof
  • Reduced titanium oxide coating and preparation method and application thereof
  • Reduced titanium oxide coating and preparation method and application thereof

Examples

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Embodiment 1

[0045] (1) Ultrasonic pickling treatment is performed on a pure titanium metal sheet of 10mm×10mm×1mm. The pickling solution is mixed with hydrofluoric acid, nitric acid and ultrapure water at a volume ratio of 1:5:34; followed by deionization Ultrasonic cleaning of water to obtain a clean and uniform surface (see figure 1 shown). Micro-arc oxidation technology is used to in-situ oxidize the titanium metal surface to form a porous titanium oxide coating. The specific process conditions and parameters are shown in Table 1. The surface topography images obtained under the process parameters are shown in Figure 2a As shown, the results show that the titanium metal surface forms a porous structure;

[0046] Table 1 is the micro-arc oxidation process conditions and parameters in the present embodiment 1:

[0047] Electrolyte 0.2M sulfuric acid solution oxidation voltage 270V electric current 1.8A frequency 800Hz duty cycle 10％ oxidatio...

Embodiment 2

[0055] Step (1) of this embodiment is the same as that of Embodiment 1, and its detailed description is omitted. (2) Plasma immersion ion implantation was performed on the porous titanium oxide coating obtained by treating the titanium metal surface with the micro-arc oxidation technique in the above-mentioned embodiment 1. The specific injection parameters are shown in Table 3; the surface topography obtained under the injection parameters is shown in Figure 3b As shown, it can be seen from the figure that the surface of the coating still maintains the porous structure of the micro-arc oxidation coating after hydrogen ion implantation treatment;

[0056] Table 3 shows the hydrogen ion implantation parameters in Example 2:

[0057] background vacuum 4.0×10 -3 Pa

Injection voltage 30kV pulse width 30μs Pulse frequency 100Hz injection time 60min RF power 400W hydrogen 15 sccm

[0058] .

[0059] The reduced titaniu...

Embodiment 3

[0061] Step (1) of this embodiment is the same as that of Embodiment 1, and its detailed description is omitted. (2) Plasma immersion ion implantation was performed on the porous titanium oxide coating obtained by treating the titanium metal surface with the micro-arc oxidation technique in the above-mentioned embodiment 1. The specific injection parameters are shown in Table 4; the surface topography obtained under the injection parameters is shown in Figure 3c As shown, it can be seen from the figure that the surface of the coating still maintains the porous structure of the micro-arc oxidation coating after hydrogen ion implantation treatment;

[0062] Table 4 is the hydrogen ion implantation parameters in the present embodiment 3:

[0063] background vacuum 4.0×10 -3 Pa

Injection voltage 30kV pulse width 30μs Pulse frequency 100Hz injection time 120min RF power 400W hydrogen 15 sccm

[0064] .

[0065] The re...

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Abstract

The invention relates to a reduced titanium oxide coating and a preparation method and application thereof. The reduced titanium oxide coating has a porous structure, the reduced titanium oxide coating contains oxygen vacancies, hydroxyl groups and trivalent titanium, the hydroxyl group content is 26-30at%, and the trivalent titanium content is 1-20at%.

Description

technical field [0001] The invention relates to a reduced titanium oxide coating that can be used for titanium-based implants and its preparation method and application, in particular to a reduced titanium oxide coating containing hydroxyl and trivalent titanium and its preparation method and applications, belonging to the field of medical biological coatings. Background technique [0002] Titanium and its alloys have excellent comprehensive mechanical properties and good biocompatibility, and are the materials of choice for medical implants. However, traditional medical titanium implants have many shortcomings, such as long healing time and low osseointegration rate after implantation in the human body. In order to obtain better osseointegration performance, micro-arc oxidation technology is often used to modify the implant to increase the surface roughness of the material and improve the combination between the implant and the new bone tissue. [0003] However, the titan...

Claims

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Application Information

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IPC IPC(8): A61L27/56A61L27/30A61L27/54A61L27/06A61L27/50
CPCA61L27/06A61L27/306A61L27/50A61L27/54A61L27/56A61L2400/18A61L2420/02A61L2430/02
Inventor 刘宣勇郑立马小涵
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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