Preparation method of fluorescent transparent ceramic with high optical performance

A technology of transparent ceramics and optical properties, applied in chemical instruments and methods, luminescent materials, etc., can solve the problems of high price, unsustainable supply, and restrictions, and achieve the effect of excellent appearance and excellent optical quality.

Pending Publication Date: 2022-07-29
JIANGSU IRON ANCHOR GLASS LTD BY SHARE LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] During the process of realizing this application, the applicant found that most of the current fluorescent transparent ceramics with high optical performance are Ce-YAG single crystals obtained by pulling crystal growth. The optical test data have excellent performance, but the growth period of the pulling method is too long and limited by the equipment, the size of the grown single crystal is difficult to break through the limitation of 120mm, which makes the price expensive in some special application fields. unsustainable goods phenomenon

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  • Preparation method of fluorescent transparent ceramic with high optical performance

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Embodiment 1

[0021] see figure 1 , which is a schematic flow chart of the steps of a method for preparing a cerium-doped yttrium aluminum garnet transparent ceramic according to an embodiment of the present application. As shown in the figure, the preparation method 1 of the cerium-doped yttrium aluminum garnet transparent ceramic in this embodiment is to prepare a fluorescent transparent ceramic doped with 0.1 at% Ce. The preparation method 1 of fluorescent transparent ceramics with high optical performance includes the following steps 101 to 106, wherein:

[0022] Step 101, raw material processing. The metal oxide powders of yttrium oxide, aluminum oxide and cerium oxide are calcined to remove organic matter and moisture. Specifically, the yttrium oxide, aluminum oxide and cerium oxide powders are calcined in a muffle furnace for use.

[0023] Step 102, preparing slurry. The calcined metal oxide powder, calcium carbonate powder and tetraethoxysilane are put into a ball milling tank, ...

Embodiment 2

[0031] see figure 1 , which is a schematic flow chart of the steps of a method for preparing a cerium-doped yttrium aluminum garnet transparent ceramic according to an embodiment of the present application. As shown in the figure, the preparation method 1 of the cerium-doped yttrium aluminum garnet transparent ceramic in this embodiment is to prepare a fluorescent transparent ceramic doped with 0.1 at% Ce. The preparation method 1 of fluorescent transparent ceramics with high optical performance includes the following steps 101 to 106, wherein:

[0032] Step 101, raw material processing. The metal oxide powders of yttrium oxide, aluminum oxide and cerium oxide are calcined to remove organic matter and moisture. Specifically, the yttrium oxide, aluminum oxide and cerium oxide powders are calcined in a muffle furnace for use.

[0033] Step 102, preparing slurry. The calcined metal oxide powder, calcium carbonate powder and tetraethoxysilane are put into a ball milling tank, ...

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Abstract

The invention relates to a preparation method of fluorescent transparent ceramic with high optical performance. The preparation method comprises the following steps: (a) calcining metal oxide powder of yttrium oxide, aluminum oxide and cerium oxide; (b) putting the calcined metal oxide powder, calcium carbonate powder and tetraethoxysilane into a ball milling tank, adding a ball milling medium at the same time, and carrying out ball milling to obtain slurry; (c) drying the slurry, grinding and sieving the dried powder to obtain uniformly dispersed powder, calcining and cooling again, and sieving again to obtain final powder; (d) adding the final powder into a mold, carrying out dry pressing molding, and then carrying out cold isostatic pressing to obtain a biscuit; (e) sintering the biscuit; (f) annealing and processing the sintered biscuit to obtain the fluorescent transparent ceramic. Compared with ceramic obtained through one-step vacuum sintering, the fluorescent transparent ceramic is excellent in appearance, and the fluorescent transparent ceramic excellent in optical quality is obtained.

Description

technical field [0001] The present application relates to a transparent ceramic, in particular to a preparation method of a fluorescent transparent ceramic with high optical performance. Background technique [0002] Fluorescent transparent 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, luminous temperature, high luminous efficiency and long life. [0003] In the process of realizing this application, the applicant found that most of the current fluorescent transparent ceramics with high optical properties are Ce-YAG single crystals obtained by the pulling method. The optical test data has excellent performance, but the growth period of the pulling method is too lon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/44C04B35/622C04B35/64C09K11/80
CPCC04B35/44C04B35/622C04B35/64C09K11/7774C04B2235/3225C04B2235/3229C04B2235/6562C04B2235/6565C04B2235/6567C04B2235/658C04B2235/6581C04B2235/661C04B2235/662C04B2235/77C04B2235/9653
Inventor 吴倩颖周进高国忠袁厚呈刘章杨洋
Owner JIANGSU IRON ANCHOR GLASS LTD BY SHARE LTD
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