Method for preparing Ag/ZnO/HA nanocomposite coating on titanium alloy

A nanocomposite coating and titanium alloy technology, applied in metal material coating technology, coating, medical science, etc., can solve problems such as bacterial infection, bacterial drug resistance, lack of antibacterial and biocompatibility

Inactive Publication Date: 2017-10-10
HUBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, many of the current implant materials themselves do not have antibacterial and biocompatibility, resulting in bacterial infection after surgery, and implant rejection occurs from time to time.
The second implantation not only brings financial burden to the patient, but also causes greater pain and torture to the patient's body and mind
At the same time, the extensive use of antibiotics will lead to drug resistance of the bacteria infected by the human body. When the human body can only rely on antibiotics for treatment, there are no effective antibiotics available.

Method used

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  • Method for preparing Ag/ZnO/HA nanocomposite coating on titanium alloy
  • Method for preparing Ag/ZnO/HA nanocomposite coating on titanium alloy
  • Method for preparing Ag/ZnO/HA nanocomposite coating on titanium alloy

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Embodiment 1

[0042] In this embodiment, the laser cladding treatment is directly carried out on the titanium alloy, and the steps include:

[0043] (1) Step 1: put Ti 6 Al 4 V was polished with 240-grit sandpaper to make Ti 6 Al 4 One side of V is mirror-like. Then, it was washed with ethanol and ultrasonicated 3 times, and then washed with deionized water and dried.

[0044] (2) Step 2: The laser cladding process uses a laser model JHM-1GY-300B. Turn on the laser two-dimensional platform to set the cladding parameters, set the current to I=100A, pulse width W=2ms, frequency f=20Hz, beam diameter D=0.6mm, operating speed V=5mm / s. Place the sample in the laser melting Overlay the platform, adjust the X-axis and Y-axis of the platform through the program, so that the sample is at the starting point of the laser emitter. Open the argon gas bottle to put the sample in the argon atmosphere, and start the "drive", "program control" and "program" systems on the control platform to carry out...

Embodiment 2

[0047] This embodiment provides a method for preparing Ag / ZnO / HA nanocomposite coating on titanium alloy, the steps include:

[0048] (1) Step 1: Weigh 135 mg of hydroxyapatite (HA) into a beaker filled with 10 mL of deionized water, and perform magnetic stirring after ultrasonication for 30 min. Weigh 11.81mg of silver nitrate crystals (AgNO 3 ) into another beaker, and add 10mL ammonia water to dissolve it, and wait for the AgNO 3 After completely dissolving in ammonia water, slowly pour the solution into a beaker containing HA solution and continue stirring. Then slowly add hydrazine hydrate (N 2 h 4 ), until the mixed solution changes from white to brown, stop adding N 2 h 4 , at this time AgNO 3 The silver ions in the solution are reduced to nano-silver simple substance.

[0049] (2) Step 2: Add 7.5 mg of zinc oxide nanoparticles (ZnO) to the above brown solution, perform suction filtration with an organic filter membrane, and wash with ethanol and deionized water ...

Embodiment 3

[0053] This embodiment provides a kind of method that prepares Ag / ZnO / HA nanocomposite coating on titanium alloy, and the titanium alloy with coating that this method obtains has carried out the test of the release concentration of zinc ion and silver ion, Specific steps include:

[0054] (1) Step 1: Weigh hydroxyapatite (HA) into a beaker filled with 10 mL of deionized water, and perform magnetic stirring after ultrasonication for 30 min. Weigh silver nitrate crystals (AgNO 3 ) into another beaker, and add 10mL ammonia water to dissolve it, and wait for the AgNO 3 After completely dissolving in ammonia water, slowly pour the solution into a beaker containing HA solution and continue stirring. Then slowly add hydrazine hydrate (N 2 h 4 ), until the mixed solution changes from white to brown, stop adding N 2 h 4 , at this time AgNO 3 The silver ions in the solution are reduced to nano-silver simple substance.

[0055] (2) Step 2: Add zinc oxide nanoparticles (ZnO) to th...

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Abstract

The invention provides a method for preparing an Ag/ZnO/HA nanocomposite coating on a titanium alloy. Firstly, a chemical reduction method is used for preparing nanosilver grains with an excellent antibacterial property, a laser cladding technique is used for preparing the firm Ag/ZnO/HA nanocomposite coating, Ag has an excellent anti-bacterial property, ZnO has a certain anti-bacterial property and an osteogenesis property, HA has excellent biocompatibility and an osteogenesis property, each component in the coating performs the corresponding function and realizes the effects of coordinated sterilization and biocompatibility, and the improved titanium alloy with the coating has a lasting anti-bacterial property and good biocompatibility.

Description

technical field [0001] The invention relates to the field of material science and nanometer material technology, in particular to a method for preparing an Ag / ZnO / HA nanocomposite coating with durable antibacterial properties and good biocompatibility on a titanium alloy through laser cladding technology. Background technique [0002] The technology of using laser to prepare alloys and coatings is a technical means that emerged in the 1990s. Its advantage is that it can firmly combine different kinds of inorganic metal substances with higher melting points. After development in recent years, methods including laser pulse deposition and laser cladding have been developed. Among them, laser cladding is popular because of its relatively simple operation and low requirements for raw materials. By setting the current, pulse width, frequency and other parameters of the laser instrument, the coating cladding thickness, bonding strength, and coating patterning can be controlled mor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L27/06A61L27/30A61L27/32A61L27/50A61L27/54C23C24/10
CPCA61L27/06A61L27/306A61L27/32A61L27/50A61L27/54A61L2300/104A61L2300/404A61L2300/606A61L2420/02A61L2420/04A61L2420/06A61L2430/02C23C24/103
Inventor 吴水林张演哲刘想梅
Owner HUBEI UNIV
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