Antibacterial treatment method for ceramic surface

Abstract

The antibacterial treatment method for the ceramic surface comprises the steps that a transition layer is formed on the ceramic surface through spraying, zinc-chromium alloy serves as a spraying raw material, and spraying is conducted in the atmosphere of argon and hydrogen; and a metal layer is deposited on the transition layer, the vacuum chamber is controlled to be at preset air pressure, a magnetron sputtering power source is started to conduct sputtering on a metal target so as to deposit the metal layer, and the thickness of the metal layer is smaller than that of the transition layer. According to the method, an antibacterial protective film can be formed on the surface of the ceramic, the antibacterial protective film has a strong inhibition effect on viruses and bacteria, the stable chemical performance of the content of the ceramic is guaranteed, and the method is simple, efficient and low in cost.

Description

Technical Field

[0001] The present invention relates to the field of ceramic treatment, and particularly to an antibacterial treatment method for the surface of ceramics. Background Art

[0002] Industrially, there are certain requirements for carriers such as chemical or medical trays and containers. Especially when carrying various samples, these carriers need to have antibacterial effects to avoid bacterial proliferation and contamination of the samples. The traditional solution is to perform regular disinfection treatment on the carriers. However, this method is inefficient, time-consuming, and requires a large amount of consumables. In particular, it cannot clean the bacteria generated at any time during use.

[0003] Therefore, it is necessary to provide an antibacterial treatment method for the surface of ceramics to overcome the above defects. Summary of the Invention

[0004] The purpose of the present invention is to provide an improved antibacterial treatment method for the surface of ceramics, which forms an antibacterial protective film on the surface of the ceramics, has a strong inhibitory effect on viruses and bacteria, ensures the stable chemical properties of its contents, and is simple, efficient, and low-cost.

[0005] To achieve the above purpose, the antibacterial treatment method for the surface of ceramics of the present invention includes the following steps:

[0006] Form a transition layer on the surface of the ceramics by spraying, wherein zinc-chromium alloy is used as the spraying raw material, and the spraying is carried out in an atmosphere of argon and hydrogen; and

[0007] Deposit a metal layer on the transition layer, wherein the vacuum chamber is controlled to a predetermined air pressure, and the magnetron sputtering power supply is turned on to sputter the metal target to deposit the metal layer, and the thickness of the metal layer is less than the thickness of the transition layer.

[0008] Compared with the prior art, in the antibacterial treatment method for the surface of ceramics of the present invention, first, a transition layer is formed on the surface of the ceramics by spraying. Specifically, zinc-chromium alloy is used as the spraying raw material, and the spraying is carried out in an atmosphere of argon and hydrogen. The obtained transition layer is a zinc-chromium alloy with uniform thickness and dense structure, which can firmly adhere the surface of the ceramics and the subsequently deposited metal layer together; then, a metal layer is deposited on the transition layer. Specifically, magnetron sputtering is carried out in a vacuum chamber to obtain an antibacterial metal layer, and the thickness of the metal layer is less than the thickness of the transition layer to obtain a more firm adhesion effect. Thus, a protective film with antibacterial effects is formed on the surface of the ceramics, which has a strong inhibitory effect on viruses and bacteria, ensures the stable chemical properties of its contents, and is simple, efficient, and low-cost, and is suitable for industrial promotion and use.

[0009] Preferably, the spraying further includes: controlling the flow rate of the argon gas to be 80 - 120 slpm and the flow rate of the hydrogen gas to be 10 - 15 slpm.

[0010] Preferably, the spraying further includes: controlling the spraying current to be 900 - 1000 A and the voltage to be 80 - 120 V.

[0011] Preferably, during the spraying, the distance between the raw material and the ceramic surface is 110 - 125 millimeters.

[0012] Preferably, the deposition further includes: controlling the DC power supply power applied to the metal target to be greater than 1000 - 1500 W.

[0013] Preferably, the deposition further includes: controlling the pulsed bias voltage applied to the ceramic surface to be 180 - 200 V.

[0014] Preferably, the deposition further includes: controlling the predetermined air pressure in the vacuum chamber to be 3.0×10 -4 to 4.5×10 -4 Pa.

[0015] Preferably, the deposition time is 20 - 30 minutes.

[0016] Preferably, the thickness of the transition layer is 0.5 - 3.0 microns and the thickness of the metal layer is 5 - 8 nanometers.

[0017] Preferably, the metal layer is platinum. Detailed Description of the Invention

[0018] To make the above objects, features, and advantages of the present application more obvious and understandable, the following describes the specific embodiments of the present application in detail in conjunction with some embodiments. Many specific details are set forth in the following description to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0019] In the description of the present application, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application.

[0020] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of this application, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0021] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation.

[0022] The antibacterial treatment method for the ceramic surface of the present invention will be further described below in conjunction with embodiments, but the present invention is not limited thereby. The method of the present invention aims to provide an antibacterial treatment method for the ceramic surface, forming an antibacterial protective film on the ceramic surface, having a strong inhibitory effect on viruses and bacteria, ensuring the stable chemical properties of its contents, and the method is simple and efficient, with low cost.

[0023] In an embodiment of the antibacterial treatment method for the ceramic surface of the present invention, the following steps are included:

[0024] A transition layer is formed on the ceramic surface by spraying, wherein a zinc-chromium alloy is used as the spraying raw material, and the spraying is carried out in an atmosphere of argon and hydrogen; and

[0025] A metal layer is deposited on the transition layer, wherein the vacuum chamber is controlled to a predetermined air pressure, and the magnetron sputtering power supply is turned on to sputter the metal target to deposit the metal layer, and the thickness of the metal layer is less than the thickness of the transition layer.

[0026] For the antibacterial treatment method for the ceramic surface of the present invention, first, a transition layer is sprayed on the ceramic surface. Specifically, a zinc-chromium alloy is used as the spraying raw material, and the spraying is carried out in an atmosphere of argon and hydrogen. The obtained transition layer is a zinc-chromium alloy with uniform thickness and dense structure, which can firmly adhere the ceramic surface and the subsequently deposited metal layer together; then, a metal layer is deposited on the transition layer. Specifically, magnetron sputtering is carried out in a vacuum chamber to obtain an antibacterial metal layer, and the thickness of the metal layer is less than the thickness of the transition layer to obtain a more firm adhesion effect. Thus, a protective film with antibacterial effect is formed on the ceramic surface, having a strong inhibition on viruses and bacteria, ensuring the stable chemical properties of its contents, and the method is simple and efficient, with low cost, and is suitable for industrial promotion and use.

[0027] As a specific embodiment, a zinc-chromium alloy is used as the spraying raw material and the process is carried out by plasma spraying. The spraying process parameters are set as follows: control the argon flow rate of the plasma gas to be 80 - 120 slpm, the hydrogen flow rate of the plasma gas to be 10 - 15 slpm, the spraying current to be 900 - 1000 A, and the voltage to be 80 - 120 V. Specifically, the spraying distance between the zinc-chromium alloy and the ceramic surface is controlled to be 110 - 125 mm. By adopting such a spraying process, a transition layer with uniform thickness and dense structure can be obtained. This transition layer can firmly attach the ceramic surface and the metal layer to be deposited together. Preferably, the thickness of this transition layer is relatively large, being 0.5 - 3.0 microns.

[0028] Next, the deposition of the metal layer is carried out. Specifically, the sprayed ceramic and the metal target are placed together in a vacuum chamber, and the vacuum chamber is evacuated to a vacuum degree of 3.0×10 -4 to 4.5×10 -4 Pa. In this environment, the magnetron sputtering power supply is turned on, and the current is conducted to the magnetron sputtering cathode with a metal target, such as a platinum target, to start the deposition of the metal transition layer. During deposition, the DC power applied to the magnetron sputtering target is greater than 1000 W - 1500 W, and the pulsed bias voltage applied to the ceramic surface is 180 - 200 V. Specifically, the deposition time of the metal layer is 25 - 30 minutes, and the thickness of the obtained platinum metal is 5 - 8 nanometers. Platinum metal has good antibacterial and bactericidal effects, and due to the action of the transition layer, it adheres tightly to the ceramic surface and is not easy to fall off. The thickness of the metal layer is much smaller than that of the alloy transition layer, which can further strengthen the bonding force of the layer body.

[0029] In summary, the antibacterial treatment method for the ceramic surface of the present invention first sprays a transition layer on the ceramic surface. Specifically, a zinc-chromium alloy is used as the spraying raw material and spraying is carried out in an atmosphere of argon and hydrogen. The obtained transition layer is a zinc-chromium alloy with uniform thickness and dense structure, which can firmly attach the ceramic surface and the metal layer to be deposited next together; then, a metal layer is deposited on the transition layer. Specifically, magnetron sputtering is carried out in a vacuum chamber to obtain an antibacterial metal layer, and the thickness of the metal layer is smaller than that of the transition layer to obtain a more firm adhesion effect. Thus, a protective film with antibacterial effects is formed on the ceramic surface, which has strong inhibition on viruses and bacteria, ensures the stable chemical properties of its content, and the method is simple and efficient, with low cost, and is suitable for industrial promotion and use.

[0030] The above-disclosed are only the preferred embodiments of the present invention. Of course, the scope of the rights of the present invention cannot be limited by this. Therefore, equivalent changes made according to the scope of the patent application of the present invention still fall within the scope covered by the present invention.

Claims

1. An antibacterial treatment method for the surface of ceramics, characterized in that, it includes the following steps: forming a transition layer on the surface of the ceramics by spraying, wherein zinc-chromium alloy is used as the spraying raw material, and the spraying is carried out in an atmosphere of argon and hydrogen; and depositing a metal layer on the transition layer, wherein the vacuum chamber is controlled to a predetermined air pressure, and the magnetron sputtering power supply is turned on to sputter the metal target to deposit the metal layer, and the thickness of the metal layer is less than the thickness of the transition layer.

2. The antibacterial treatment method for the surface of ceramics according to claim 1, characterized in that, the spraying further includes: controlling the flow rate of the argon to be 80-120 slpm and the flow rate of the hydrogen to be 10-15 slpm.

3. The antibacterial treatment method for the surface of ceramics according to claim 2, characterized in that, the spraying further includes: controlling the spraying current to be 900-1000 A and the voltage to be 80-120 V.

4. The antibacterial treatment method for the surface of ceramics according to claim 1, characterized in that, in the spraying, the distance between the raw material and the surface of the ceramics is 110-125 millimeters.

5. The antibacterial treatment method for the surface of ceramics according to claim 1, characterized in that, the deposition further includes: controlling the DC power supply power applied to the metal target to be greater than 1000-1500 W.

6. The antibacterial treatment method for the surface of ceramics according to claim 5, characterized in that, the deposition further includes: controlling the pulse bias voltage applied to the surface of the ceramics to be 180-200 V.

7. The antibacterial treatment method for the surface of ceramics according to claim 1, characterized in that, The deposition further includes: controlling a predetermined air pressure in the vacuum chamber to be 3.0×10 -4 to 4.5×10 -4 Pa.

8. The antibacterial treatment method for the surface of ceramics according to claim 1, characterized in that, the deposition time is 20-30 minutes.

9. The antibacterial treatment method for the surface of ceramics according to claim 1, characterized in that, the thickness of the transition layer is 0.5-3.0 microns, and the thickness of the metal layer is 5-8 nanometers.

10. The antibacterial treatment method for the surface of ceramics according to claim 1, characterized in that, the metal layer is platinum.