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Preparation method of red overglaze color Ce:YAG fluorescent ceramic based on 3D printing

A fluorescent ceramic and 3D printing technology, applied in the field of 3D printing, can solve the problems of low material utilization rate, low part precision, high processing cost, etc., achieve uniform light distribution and improve light efficiency

Inactive Publication Date: 2021-12-07
NANTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

FDM technology needs to set up a support structure, and the heating temperature of the nozzle is high during the printing process, which has high requirements on the bending resistance, tensile strength, hardness and compressive strength of the raw material, and the precision of the parts produced by it is low. At the same time, there are printing textures on the surface, and the application of parts manufactured by this technology is greatly limited
The thin film material used in LOM technology has a low material utilization rate in the process of cutting and stacking. At the same time, laser cutting is required, and the processing cost is high. The product boundary needs to be polished, and the density of the ceramic sample is not uniform.
The processing time of parts manufactured by SLS technology is long, the cost is high, the surface of the parts is rough, and there is a peculiar smell during the sintering process, and high-density ceramic parts cannot be directly molded, and warping deformation is prone to occur when forming large-sized parts

Method used

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  • Preparation method of red overglaze color Ce:YAG fluorescent ceramic based on 3D printing
  • Preparation method of red overglaze color Ce:YAG fluorescent ceramic based on 3D printing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A kind of preparation method based on 3D printing red overglaze color Ce:YAG fluorescent ceramics, comprises the following steps:

[0033] (1) Prepare 60g of (Y 0.999 Ce 0.001 ) 3 al 5 o 12 Materials, according to the stoichiometric ratio of each element in the chemical formula, respectively weigh alumina, yttrium oxide and cerium oxide ceramic powder to prepare Ce:YAG ceramic powder;

[0034] (2) After fully mixing the above Ce:YAG ceramic powder with binder and pure water, it is made into Ce:YAG ceramic slurry for 3D printing; the binder is an acrylic polymer binder, and Ce : The mass ratio of YAG ceramic powder to acrylic polymer binder and pure water is 1:2:6;

[0035] (3) Print the above ceramic slurry into a cap-shaped Ce:YAG fluorescent ceramic body using 3D printing direct writing technology;

[0036] (4) Place the printed Ce:YAG fluorescent ceramic body at 20°C for natural curing for 6 h, and then carry out drying and debinding treatment on the cured cera...

Embodiment 2

[0040] A kind of preparation method based on 3D printing red overglaze color Ce:YAG fluorescent ceramics, comprises the following steps:

[0041] (1) Prepare 60g of (Y 0.998 Ce 0.002 ) 3 al 5 o 12Materials, according to the stoichiometric ratio of each element in the chemical formula, respectively weigh alumina, yttrium oxide and cerium oxide ceramic powder to prepare Ce:YAG ceramic powder;

[0042] (2) After fully mixing the above Ce:YAG ceramic powder with binder and pure water, it is made into Ce:YAG ceramic slurry for 3D printing; the binder is an acrylic polymer binder, and Ce : The mass ratio of YAG ceramic powder to acrylic polymer binder and pure water is 1:3:7;

[0043] (3) Print the above ceramic slurry into a cap-shaped Ce:YAG fluorescent ceramic body using 3D printing direct writing technology;

[0044] (4) Place the printed Ce:YAG fluorescent ceramic body at 25°C for 7 h to naturally cure, and then carry out drying and debinding treatment on the cured cerami...

Embodiment 3

[0048] (1) Prepare 60g of (Y 0.99 Ce 0.01 ) 3 al 5 o 12 Materials, according to the stoichiometric ratio of each element in the chemical formula, respectively weigh alumina, yttrium oxide and cerium oxide ceramic powder to prepare Ce:YAG ceramic powder;

[0049] (2) After fully mixing the above Ce:YAG ceramic powder with binder and pure water, it is made into Ce:YAG ceramic slurry for 3D printing; the binder is an acrylic polymer binder, and Ce : The mass ratio of YAG ceramic powder to acrylic polymer binder and pure water is 1:4:8;

[0050] (3) Print the above ceramic slurry into a cap-shaped Ce:YAG fluorescent ceramic body using 3D printing direct writing technology;

[0051] (4) Place the printed Ce:YAG fluorescent ceramic body at 30°C for 8 h to naturally cure, and then perform drying and debinding treatment on the cured ceramic body in turn; the drying process is as follows: ℃ for 72 h; then raise the temperature to 80 ℃, and keep for 72 h; the specific steps of deg...

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Abstract

The invention discloses a preparation method of red overglaze color Ce:YAG fluorescent ceramic based on 3D printing. The method comprises the steps: firstly, printing weighed aluminum oxide, yttrium oxide and cerium oxide ceramic powder, a binder and pure water into a cap-shaped Ce:YAG fluorescent ceramic blank by virtue of a 3D printing direct writing technology, naturally curing, and carrying out drying treatment and glue discharging treatment, so as to obtain cap-shaped Ce:YAG fluorescent ceramic; and then coating the surface of the Ce:YAG fluorescent ceramic with the prepared red glaze slurry by adopting a 3D printing direct writing technology, and curing to obtain the red overglaze color Ce:YAG fluorescent ceramic. According to the preparation method, the uniform distribution of light is effectively improved, and the lighting effect is improved.

Description

technical field [0001] The invention belongs to the technical field of 3D printing, and in particular relates to a preparation method based on 3D printing red color Ce:YAG fluorescent ceramics. Background technique [0002] Fluorescent ceramic is a new type of fluorescent conversion material based on advanced transparent ceramic sintering technology. Through ceramic matrix screening, different rare earth doping, crystal field environment regulation, energy transfer process control and refined structure design, it has the advantages of adjustable color temperature, thermal shock resistance, stable luminescence, high luminous efficiency and long life. [0003] Porcelain painting refers to a kind of flat ceramic handicraft that is hand-painted, glazed and fired at high temperature with chemical pigments on the plain porcelain body. There is a lack of red light in the cap-shaped Ce:YAG fluorescent ceramics, so coating a layer of red glaze on the surface of Ce:YAG fluorescent ce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/10C04B35/622C04B41/86B33Y70/10
CPCC04B35/10C04B35/622C04B41/009C04B41/5022C04B41/86B33Y70/10C04B2235/3225C04B2235/3229C04B2235/6026C04B2235/656C04B2235/6562C04B2235/6567C04B2235/9646C04B2235/94C04B41/4535C04B41/0072
Inventor 姚庆陈志航
Owner NANTONG UNIVERSITY
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