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A method for preparing antibacterial particles containing ag on the surface of pure titanium or titanium alloy

An antibacterial particle, titanium alloy technology, applied in metal material coating process, coating and other directions, can solve the problems of complex process, high cost, low processing efficiency, etc., to achieve simple and fast operation, short preparation time, and wide application range. Effect

Active Publication Date: 2021-10-26
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, chemical synthesis of Ag nanoparticles is inefficient and has poor binding force, which cannot meet the needs of practical applications.
[0007] The existing modification methods can realize the loading of silver on the surface of titanium alloy, but there are still disadvantages such as complicated process, low processing efficiency, high cost, and inability to selectively process.

Method used

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  • A method for preparing antibacterial particles containing ag on the surface of pure titanium or titanium alloy
  • A method for preparing antibacterial particles containing ag on the surface of pure titanium or titanium alloy
  • A method for preparing antibacterial particles containing ag on the surface of pure titanium or titanium alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Embodiment 1: Preparation of Ag particles on the surface of Ti-6Al-4V alloy

[0037] Such as figure 1 As shown, the structure of the fiber laser device used in the present invention includes a control computer 1, the control computer 1 is connected with the laser 2 and the vibrating mirror system 7, and the laser light emitted by the laser 2 is reflected to the vibrating mirror through the reflector 3, the reflector 4 and the reflector 5 The system 7 focuses on the titanium alloy sample 8 after passing through the focusing lens 6 , and the sample 8 is placed on the sample stage 9 .

[0038] The above-mentioned device is now used to test the Ti-6Al-4V alloy sample with a length × width × thickness of 10 × 10 × 1mm. The operation steps are as follows:

[0039] (1) Pretreatment of Ti-6Al-4V alloy samples: mechanically grind and polish the Ti-6Al-4V alloy samples, and then immerse them in acetone, alcohol and deionized water for 5 min, respectively, for ultrasonic cleaning...

Embodiment 2

[0043] Example 2: Ti-6Al-4V Alloy Selective Design Region Modification

[0044] The above-mentioned device is now used to test the Ti-6Al-4V alloy sample with a length × width × thickness of 10 × 10 × 1mm. The operation steps are as follows:

[0045] (1) Pretreatment of Ti-6Al-4V alloy samples: mechanically grind and polish the Ti-6Al-4V alloy samples, and then immerse them in acetone, alcohol and deionized water for 5 min, respectively, for ultrasonic cleaning, and then dry them for use;

[0046] (2) Silver foil attachment: Place the pretreated Ti-6Al-4V alloy sample on a clean plane with the polished side facing up, and then place the prepared silver foil on the Ti-6Al-4V alloy On the surface, place a layer of smooth paper on top of the silver foil, attach the silver foil to the surface of the Ti-6Al-4V alloy by pressing, remove the surface paper, and leave the silver foil attached sample for later use;

[0047] (3) Place Ag-attached Ti-6Al-4V alloy sample 8 in such as fi...

Embodiment 3

[0049] Embodiment 3: Preparation of Ag particles on the surface of pure titanium

[0050] The above-mentioned device is now used to test a pure titanium sample with a length × width × thickness of 10 × 10 × 1mm, and the operation steps are as follows:

[0051] (1) Pretreatment of pure titanium samples: mechanically grind and polish the pure titanium samples, then immerse them in acetone, alcohol and deionized water in order to perform ultrasonic cleaning for 5 minutes respectively, and then dry them for use;

[0052] (2) Silver foil attachment: Place the pretreated pure titanium sample on a clean plane with the polished side facing up, then place the prepared silver foil on the pure titanium surface, and place a pad on top of the silver foil. A smooth paper surface, attach the silver foil to the pure titanium surface by pressing, remove the surface paper surface, and leave the silver foil attached sample for later use;

[0053] (3) Place the pure titanium sample 8 attached wi...

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Abstract

A method for preparing Ag-containing antibacterial particles on the surface of pure titanium or titanium alloy, the method comprises cladding Ag on the surface of pure titanium or titanium alloy, and can selectively adjust the cladding area and Ag content. The method comprises the following steps: after grinding and polishing the pure titanium or titanium alloy, attaching silver foil to the surface of the pure titanium or titanium alloy; placing the pure titanium or titanium alloy attached with silver foil on the sample processing table, scanning the sample with a laser On the surface, Ag is clad on the surface of pure titanium or titanium alloy under the action of laser energy, and the cladding Ag is distributed on the surface in the form of particles. The method can make use of the feature of selective processing of laser to carry out selective modification on the surface of pure titanium or titanium alloy. The Ag-modified pure titanium or titanium alloy surface prepared by this method has excellent antibacterial properties, and the antibacterial rate reaches 97.9%.

Description

technical field [0001] The invention relates to a method for preparing Ag-containing antibacterial particles on the surface of pure titanium or titanium alloy, the purpose of which is to realize the antibacterial function. Specifically, it relates to a method for processing Ag antibacterial particles on the surface of titanium alloy by laser cladding, belonging to metal Material surface modification technology field. Background technique [0002] Titanium alloys have been widely used clinically as implant materials due to their good mechanical properties, excellent corrosion resistance and biocompatibility. However, the related infection of titanium alloy as an implant is still an urgent problem to be solved, because the infection will cause chain complications. In spite of strict disinfection and aseptic operation measures in surgery, postoperative infection is a common problem. Implant infection is mainly due to: bacterial biofilm formed on the implant surface and low ti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C26/02
CPCC23C26/02
Inventor 李岩薛贤达何东磊
Owner BEIHANG UNIV
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