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Method for preparing nanosilver/silicon dioxide composite structure coating through pulsed laser deposition

A pulsed laser deposition and silicon dioxide technology, applied in coating, metal material coating process, ion implantation plating, etc., can solve the problems of introducing impurities and many kinds of chemical raw materials, and achieve short generation cycle and novel synthesis method. , Antibacterial effect is obvious

Inactive Publication Date: 2015-06-17
HARBIN INST OF TECH
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  • Application Information

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Problems solved by technology

[0004] The present invention aims to solve the problems that there are many types of chemical raw materials and the introduction of impurities in the reaction process in the existing method for preparing nano-silver / silicon dioxide, and provides a method for preparing nano-silver / silicon dioxide composite structural coating by pulse laser deposition

Method used

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  • Method for preparing nanosilver/silicon dioxide composite structure coating through pulsed laser deposition
  • Method for preparing nanosilver/silicon dioxide composite structure coating through pulsed laser deposition
  • Method for preparing nanosilver/silicon dioxide composite structure coating through pulsed laser deposition

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specific Embodiment approach 1

[0032] Specific embodiment one: In this embodiment, a method for preparing a nano-silver / silicon dioxide composite structure coating by pulsed laser deposition is carried out according to the following steps:

[0033] 1. Preparation of silver / silicon dioxide composite target material: Silica powder with a purity of 99.9% is pressed into a silicon dioxide disc with a diameter of 10 mm to 100 mm and a thickness of 1 mm to 10 mm under a pressure of 20 MPa. The temperature is 1200℃~1600℃ for sintering, the sintering time is 1h~10h, and then the 7mm 2 ~6300mm 2 The pure silver sheet is fixed on the sintered silicon dioxide disc to obtain a silver / silicon dioxide composite target; the pure silver sheet accounts for 10% to 90% of the area of ​​the silver / silicon dioxide composite target;

[0034] 2. Cleaning the substrate: The substrate is ultrasonically cleaned once with acetone, deionized water and methanol as a cycle, and the cleaning is repeated for 2 to 3 cycles to obtain the c...

specific Embodiment approach 2

[0047] Embodiment 2: The difference between this embodiment and Embodiment 1 is that in step 1, the silicon dioxide disc with a diameter of 30 mm and a thickness of 3 mm is pressed. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0048] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that in step 1, sintering is carried out at a temperature of 1280°C. Others are the same as in the first or second embodiment.

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Abstract

The invention relates to a method for preparing nanosilver / silicon dioxide composite structure coating through pulsed laser deposition. The method aims at solving the problems that the existing method for preparing a nanosilver / silicon dioxide composite structure has various chemical raw materials and causes impurities in the reaction process. The preparation method comprises the steps of I, preparing a silver / silicon dioxide composite target material; II, cleaning a substrate; III, respectively fixing the target material and the substrate on a self-rotation target position and a sample holder; IV, leading in oxygen after vacuumizing; V, performing laser ablation to deposit a coating at room temperature by adopting an excimer laser; VI, stopping deposition. For the nanosilver / silicon dioxide composite structure coating prepared by adopting the method, only two raw materials are used, the introduction of impurities can be avoided as preparation is performed in a vacuum cavity, the use of the substrate made of different inorganic, organic material and the like can be guaranteed due to room-temperature deposition, the nanosilver / silicon dioxide composite structure coating is potentially widely applied in the fields of medicinal, electronic and other fields; the method is used for preparing the nanosilver / silicon dioxide composite structure coating.

Description

technical field [0001] The invention relates to a method for preparing an antibacterial coating with a composite structure. Background technique [0002] Antibacterial coatings have very important applications in medical fields such as orthopedics and surgical treatment, as well as in the protection of electronic components. Therefore, the research and development of antibacterial coatings and related technologies is a hot research direction today. Nano-silver particles are a typical material used in antibacterial coatings. There are two mechanisms for their sterilization. One is that silver can dissolve silver ions in a water environment. Silver ions contact with bacterial proteins and nucleic acids, hindering the normal metabolism of bacteria to achieve antibacterial purposes. The second is that silver is transformed into silver ions under the action of water and air, and can generate active oxygen in the surroundings, and active oxygen has long-lasting sterilizing ability...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C14/28C23C14/14
Inventor 孙晔刘潇于淼尹永琦杨彬曹文武
Owner HARBIN INST OF TECH
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