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Black ceramic and method for enhancing blackness of black ceramic

A technology of black ceramics and blackness, which is applied in the field of black ceramics and increasing the blackness of black ceramics. It can solve the problems of easy peeling off of antifouling film and achieve the effects of easy operation, cost reduction and pollution prevention.

Pending Publication Date: 2017-03-15
CHAOZHOU THREE CIRCLE GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] At present, the antifouling of the ceramic surface is by vacuum evaporation of the antifouling film material on the ceramic surface. Although this makes the ceramic surface not easy to be dirty, the antifouling film is easy to fall off after a long time of use.

Method used

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  • Black ceramic and method for enhancing blackness of black ceramic
  • Black ceramic and method for enhancing blackness of black ceramic
  • Black ceramic and method for enhancing blackness of black ceramic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] An embodiment of the method for increasing the blackness of black ceramics according to the present invention, this embodiment takes a sputtering machine as an example, and the preparation method is as follows:

[0045] 1. Film system design, based on the design of TFCALC, requires a high transmittance of visible light in the 380-720nm band. It is recommended to use the film stack M2HL. In order to ensure that the AR film is colorless, it is obtained after a series of optimized designs The film structure is: Si 3 N 4 (15.15nm) / SiO 2 (41.29nm) / Si 3 N 4 (50.43nm) / SiO 2 (17.54nm);

[0046] 2. The sputtering machine sputters and coats, and sets the coating parameters:

[0047] 2.1 Initial vacuum degree: 6.0~7.0×10 -4 torr, coating temperature: 80-85°C, use RF treatment before coating, free radical source power: 3400-3600W, oxygen flow rate: 120sccm, time 300s;

[0048] 2.2 Silicon target sputtering power: 7600~8000W, argon flow: 110~120sccm, nitrogen flow: 90 sccm, ...

Embodiment 2

[0057] A kind of embodiment of the method for increasing the blackness of black ceramics described in the present invention, this embodiment takes vapor deposition machine as example, and preparation method is as follows:

[0058] 1. Film system design, based on the design of TFCALC, requires a high transmittance of visible light in the 380-720nm band. It is recommended to use the film stack M2HL. In order to ensure that the AR film is colorless, it is obtained after a series of optimized designs The film structure is: Ti 3 o 5 (15.34nm) / SiO 2 (21.38nm) / Ti 3 o 5 (16.27nm) / SiO 2 (31.29nm);

[0059] 2. Evaporation machine coating process preparation:

[0060] Film system reference wavelength 550nm

[0061] The first layer: Ti 3 o 5 Film thickness 15.34nm; second layer: SiO 2 Film thickness 21.38nm; third layer: Ti 3 o 5 Film thickness 16.27nm; fourth layer: SiO 2 Film thickness 31.29nm; Coating vacuum degree: 2.2×10 -4 torr; substrate heating temperature: 20℃±5; co...

Embodiment 3

[0069] A kind of embodiment of the method for increasing the blackness of black ceramics described in the present invention, this embodiment takes vapor deposition machine as example, and preparation method is as follows:

[0070] 1. Film system design, based on the design of TFCALC, requires a high transmittance of visible light in the 380-720nm band. It is recommended to use the film stack M2HL. In order to ensure that the AR film is colorless, it is obtained after a series of optimized designs The film structure is: ZrO 2 (20nm) / SiO2 2 (80nm);

[0071] 2. Evaporation machine coating process preparation:

[0072] Film system reference wavelength 550nm

[0073] The first layer: ZrO 2 Film thickness 15.15nm; second layer: SiO 2 Film thickness 41.29nm; Coating vacuum degree: 2.2×10 - 4 torr; substrate heating temperature: 20℃±5; coating substrate rotation frequency: 25n / min; electron gun high voltage: -8KV; evaporation rate: Ti 3 o 5 , 0.8 Å / s, SiO 2 , 1.5 Å / sec.

[...

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Abstract

The invention provides a method for enhancing blackness of a black ceramic. The method is characterized in that an antireflection film (AR film) is arranged on a black ceramic substrate layer. According to method for enhancing blackness of a black ceramic, the surface of the black ceramic substrate layer is not destroyed, and the original high-gloss mirror surface effect of the black ceramic substrate layer is retained; according to method for enhancing blackness, the mechanical property of the black ceramic substrate layer is not changed, and vacuum coating is only performed on the surface of the black ceramic substrate layer; the method for enhancing blackness is applicable to black ceramic substrate layers of all materials, and the blackness can be further enhanced on the basis of the original blackness of the black body; if the blackness of the black ceramic is inappropriate, the AR film can be removed, and a new AR film can be coated again; the black ceramic body can be used repeatedly, thereby lowering the cost; the method for enhancing blackness is simple to operate, involves no three industrial wastes in the process, and is green and environment-friendly; the AR film is colorless and transparent and realizes pure blackness enhancing; and after being coated with the hard AR film, the black ceramic substrate layer is scratch-resistant, thereby being durable in use.

Description

technical field [0001] The invention relates to a black ceramic and a method for increasing the blackness of the black ceramic. Background technique [0002] The black color of black ceramics is generally blackened by adding black pigment to the powder material or adjusting the sintering process. Once the green body is sintered and formed, its blackness is difficult to change after processing to the finished product. With increased reflectivity, black ceramics look shiny, but not quite black. [0003] In view of the characteristics of black ceramics that are not black enough, the main reason is that the reflectance of the ceramic surface is too high and the transmittance is too low. The existing technology is to corrode or roughen the surface of the ceramic to increase the roughness of the ceramic surface and reduce the specular reflection. , increasing the diffuse reflection can increase the blackness of the ceramic. [0004] In the current invention patents, black pigmen...

Claims

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Application Information

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IPC IPC(8): C04B41/89
CPCC04B41/52C04B41/89C04B41/5066C04B41/4529C04B41/5027C04B41/4933C04B41/5041C04B41/5042
Inventor 马艳红
Owner CHAOZHOU THREE CIRCLE GRP
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