Preparation method of multilayer composite structured transparent ceramic

A transparent ceramic and multi-layer composite technology, applied in the field of advanced ceramics, can solve the problems of high preparation process cost, low axial transmittance, poor optical quality, etc., achieve small ion diffusion range, high degree of densification, and reduce experimental cost effect

Active Publication Date: 2015-06-24
XUZHOU ALL TO PHOTOELECTRIC TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the rheological properties of the prepared slurry are ideal, the uniformity of the prepared base tape is poor, the green body is prone to cracks, and the axial transmittance of the final sintered ceramic is low, generally lower than 80%.
[0005] In the above literature, multi-layer (YAG / Re:YAG / YAG) composite structure transparent ceramics prepared by tape casting generally have general slurry rheological properties, poor optical quality, low axial transmittance, rare earth The doping amount of ions is not high, the diffusion of ions is large, and the cost of the entire preparation process is relatively high. The final composite transparent ceramics prepared cannot meet the requirements of high optical quality and good laser thermal effect control. Preparation of multilayer composite transparent ceramics, Especially its application in high power, large size and composite structure

Method used

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  • Preparation method of multilayer composite structured transparent ceramic
  • Preparation method of multilayer composite structured transparent ceramic
  • Preparation method of multilayer composite structured transparent ceramic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1 # (2mol%Nd:YAG,(Y 0.98 Nd 0.02 ) 3 al 5 o 12 ):

[0029] The partial composition of pure YAG is shown in Table 1. # As shown, the Re:YAG part is composed of 1 in Table 1 # Shown, specific preparation method comprises the following steps:

[0030] ① Weigh the raw materials according to the composition in Table 1. First, put the oxide raw material powder into a high-purity alumina ball mill tank, add 300g of high-purity alumina balls, and add sintering aids, dispersants, absolute ethanol and di Prepare the slurry in toluene; ball mill and mix on a planetary ball mill for 8 hours at a speed of 180r / min; then add binder and plasticizer, and ball mill and mix for 36 hours to obtain the slurry used for casting; the prepared slurry flow The variable characteristics are very significant, and the pseudoplasticity of the slurry is very good, which is very suitable for the casting process.

[0031] ② Defoaming the slurry obtained in step ① with a tape casting ma...

Embodiment 2

[0034] Example 2 # (10mol%Nd:YAG,(Y 0.9 Nd 0.1 ) 3 al 5 o 12 ):

[0035] The partial composition of pure YAG is shown in Table 1. # As shown, the Re:YAG part is composed of 2 in Table 1 # Shown, specific preparation method comprises the following steps:

[0036] ① Weigh the raw materials according to the composition in Table 1. First, put the oxide raw material powder into a high-purity alumina ball mill tank, add 300g of high-purity alumina balls, and add sintering aids, dispersants, absolute ethanol and di Slurry was prepared in toluene; ball milled and mixed on a planetary ball mill for 16 hours at a speed of 240 r / min; then binder and plasticizer were added, and ball milled and mixed for 24 hours to obtain the slurry used for casting.

[0037] ② Defoaming the slurry obtained in step ① with a tape casting machine, the conditions are: stirring for 10 minutes in a vacuum environment (-50kpa); the prepared slurry is tape-cast, and the tape-casting process is: the dista...

Embodiment 3

[0040] Example 3 # (20.0mol%Yb:YAG,Y 0.8 Yb 0.2 ) 3 al 5 o 12 ):

[0041] The partial composition of pure YAG is shown in Table 1. # As shown, the Re:YAG part is composed of 3 in Table 1 # Shown, specific preparation method comprises the following steps:

[0042] ① Weigh the raw materials according to the composition in Table 1. First, put the oxide raw material powder into a high-purity alumina ball mill tank, add 300g of high-purity alumina balls, and add sintering aids, dispersants, absolute ethanol and di Slurry was prepared in toluene; ball milled and mixed on a planetary ball mill for 24 hours at a speed of 120 r / min; then binder and plasticizer were added, and ball milled and mixed for another 15 hours to obtain the slurry used for casting.

[0043] ② Defoaming the slurry obtained in step ① with a tape casting machine, the conditions are: stirring for 5 minutes in a vacuum environment (-70kpa); the prepared slurry is tape-cast, and the tape-casting process is: t...

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Abstract

The invention relates to a preparation method of multilayer composite structured transparent ceramic, which is characterized in that the prepared multilayer ceramic meets a structure shown in the following formula: YAG / Re: YAG / YAG; a middle layer is Re:YAG multilayer consisting of a (Y1-xRex)3Al5O12 component flake, and two end layers are respectively a YAG multilayer consisting of a Y3Al5O12 flake. The method comprises the following steps: preparing a size for flow casting; then, carrying out tape casting, and sintering the obtained object so as to obtain a multiple YAG / Re: YAG / YAG composite structured ceramic biscuit; and finally, calcinating the biscuit in the air, and then sintering the obtained product in a vacuum environment, so that the multilayer composite structured transparent ceramic is obtained. The multilayer composite structured transparent ceramic prepared according to the invention has the characteristics of high purity, complicated structure, good optical quality, high transmittance, small ion diffusion scope, and the like, and is extremely applicable to the preparation of large-sized and complex-structured YAG-based transparent ceramic materials.

Description

technical field [0001] The invention relates to a method for preparing transparent ceramics with a multilayer composite structure; in particular, it relates to a method for preparing transparent ceramics with a multilayer (YAG / Re:YAG / YAG) composite structure by using a casting process, which belongs to the field of advanced ceramics. Background technique [0002] Since Japanese scientist Ikesue realized the continuous laser output of Nd:YAG transparent ceramics by solid state reaction sintering method in 1995, laser ceramics are characterized by short preparation cycle, easy realization of uniform (gradient) and high concentration doping, easy realization of large size and design Due to the advantages of flexibility and other advantages, various new laser transparent ceramic materials emerge in an endless stream, such as Yb / Nd:YSAG, Nd:Y 2 o 3 , Cr:ZnS, etc., have been initially applied in the fields of physical laser measurement and laser medical treatment, and it is gradu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/634C04B35/44B32B18/00
Inventor 张乐黄国灿
Owner XUZHOU ALL TO PHOTOELECTRIC TECH CO LTD
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