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Preparation method and application of wear-resistant antibacterial bioactive ceramic film for titanium or titanium alloy surface

A technology of bioactive ceramics and titanium alloys, applied in surface reaction electrolytic coatings, dental restorations, coatings, etc., can solve problems such as insufficient bonding force of the substrate, difficulty in meeting production needs, and mismatching mechanical properties, etc., to achieve Low cost, improved mechanical engagement, combined with good results

Inactive Publication Date: 2015-06-03
沈阳万博锐科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] (1) Although titanium or titanium alloy has the elastic modulus closest to that of bone, it is still much higher than that of bone, which may easily cause a mismatch of mechanical properties at the interface
[0008] (2) In terms of composition, titanium or titanium alloys are completely different from bone tissue. Although they have good biocompatibility with bone and there is no fiber wrapping around the implant after implantation, there is only one kind between them. Mechanically embedded osseointegration rather than strong chemical osseointegration
However, vapor deposition generally produces thinner coatings, and the bonding force with the substrate is not strong enough to meet the requirements.
[0014] Obviously, the above-mentioned research work has achieved very meaningful results in some aspects, but there are insufficient problems in the prepared coatings, and it is difficult to meet the actual production needs.
Therefore, the development of coatings on the surface of titanium alloys with high bonding strength to the substrate, good wear resistance, corrosion resistance, and good biological activity still requires scientific and technological workers to continue to conduct in-depth and systematic exploration.

Method used

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  • Preparation method and application of wear-resistant antibacterial bioactive ceramic film for titanium or titanium alloy surface
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  • Preparation method and application of wear-resistant antibacterial bioactive ceramic film for titanium or titanium alloy surface

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Experimental program
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Effect test

Embodiment 1

[0052] 1. Material preparation: After the pure titanium is cut and polished, it is cleaned and degreased by ultrasonic waves in acetone solution.

[0053] 2. Sandblasting: The silica sand particle size for sandblasting is 0.2mm, the compressed air strength is 0.2MPa, the surface roughness of the obtained substrate is Ra3.0μm, and the sandblasting equipment is RH-1010P high-pressure dry sandblasting machine.

[0054] 3. Chemical passivation: In passivation solution, 40% (volume concentration) HF is 2mL / L, 70% (volume concentration) HNO 3 10mL / L, the volume ratio is 1:5, and the rest is water. The temperature is room temperature, and it is treated for 2 minutes. After taking it out, it is washed with tap water for 1 to 2 minutes, and then with deionized water for 1 to 2 minutes. The thickness of the passivation film is 1 μm.

[0055] 4. Forward square wave pulse micro-arc oxidation ceramic film preparation: electrolyte: concentration of 0.3mol / L calcium acetate, concentration o...

Embodiment 2

[0062] 1. Material preparation: After the pure titanium is cut and polished, it is cleaned and degreased by ultrasonic waves in acetone solution.

[0063] 2. Sandblasting: The silica sand particle size for sandblasting is 0.8mm, the compressed air strength is 0.5MPa, the surface roughness of the obtained substrate is Ra5.0μm, and the sandblasting equipment is RH-1010P high-pressure dry sandblasting machine.

[0064] 3. Chemical passivation: In the passivation solution, 40% (volume concentration) HF is 2ml / L, 70% (volume concentration) HNO 3 8ml / L, the volume ratio is 1:4, and the rest is water. The temperature is room temperature, and it is treated for 3 minutes. After taking it out, it is immediately washed with tap water for 1 to 2 minutes, and then with deionized water for 1 to 2 minutes. The thickness of the passivation film is 1 μm.

[0065] 4. Forward square wave pulse micro-arc oxidation ceramic film preparation: electrolyte: calcium dihydrogen phosphate with a concent...

Embodiment 3

[0072] 1. Material preparation: Titanium alloy (Ti6Al4V) is cleaned and degreased by ultrasonic cleaning in acetone solution after cutting and grinding.

[0073] 2. Sandblasting: The silica sand particle size for sandblasting is 1.0mm, the compressed air strength is 0.6MPa, the surface roughness of the obtained substrate is Ra4.0μm, and the sandblasting equipment is RH-1010P high-pressure dry sandblasting machine.

[0074]3. Chemical passivation: in the passivation solution, 70% (volume concentration) HNO 3 4ml / L, HNO 3 8ml / L, the volume ratio is 1:4, and the rest is water. The temperature is room temperature, treated for 5 minutes, immediately washed with tap water for 1 to 2 minutes after taking it out, and then washed with deionized water for 1 to 2 minutes, and the passivation film thickness is 1 μm.

[0075] 4. Forward square wave pulse micro-arc oxidation ceramic film preparation: electrolyte: calcium glycerophosphate with a concentration of 0.25mol / L, sodium polyphosp...

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Abstract

The invention discloses a preparation method and application of a wear-resistant antibacterial bioactive ceramic film for a titanium or titanium alloy surface, belonging to the technical field of metal material surface treatment. The method comprises the following steps: preparing a bottom passivating film, preparing a porous hard ceramic film containing Zn, Ca and P under the ultrasonic conditions in combination with forward square wave pulse voltage, and carrying out hydrothermal treatment to finally obtain the wear-resistant antibacterial bioactive ceramic film. Compared with the bioactive coating obtained by other methods, the ceramic film prepared by the method disclosed by the invention has the advantages of high combination firmness with the base, favorable wear resistance and favorable corrosion resistance, and has the antibacterial effect due to the introduction of Zn on the premise of implementing bioactivity. The dental implant for the field of oral cavity manufactured on the basis of the wear-resistant antibacterial bioactive ceramic film shortens the combination time between the traditional dental implant and the bone.

Description

technical field [0001] The invention relates to the technical field of metal surface treatment, in particular to a preparation method and application of a wear-resistant and antibacterial bioactive ceramic film on the surface of titanium or titanium alloy. Background technique [0002] Among biomedical metal materials, titanium or titanium alloy has become the material of choice for dental implants, bone trauma products and artificial joints due to its excellent performance. Compared with other medical metal materials, it has the following advantages: [0003] (1) Compared with stainless steel, the elastic modulus of titanium or titanium alloy is closer to that of human bone, and the biocompatibility is better. [0004] (2) The corrosion resistance and fatigue resistance of titanium or titanium alloys are better than stainless steel and cobalt-based alloys, and the tissue reaction is slight after implantation, and the surface properties are good. [0005] (3) Compared with...

Claims

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Application Information

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IPC IPC(8): C25D11/26
CPCA61C8/0015C25D11/024C25D11/26
Inventor 张伟张涛赵宝宏张兵王福会
Owner 沈阳万博锐科技有限公司
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