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Luetcium aluminum garnet -base transparent ceramic and process for preparing same

A lutetium-aluminum garnet and transparent ceramic technology is applied in the field of fine ceramic preparation of rare earth oxide-containing transparent products, can solve problems such as restricting practical application prospects, and achieve the effects of low porosity, narrow grain distribution, and high ray absorption capacity

Active Publication Date: 2006-09-27
江苏先进无机材料研究院
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, YAG:Nd transparent laser ceramics doped with rare earth neodymium (Nd) has been developed into an important laser dielectric material and has been widely used (A. Ikesue et al., J Am Ceram Soc, 78(1995) 225, 1033, 2545; 79 (1996) 507, 1921; 80 (1997) 1517; J.Lu et al., Appl Phy Lett, 77 (2000) 3707, 78 (2001) 3586); In contrast, although the rare earth cerium (Ce ) doped YAG:Ce transparent scintillation ceramics have also been greatly developed (E.Zych et al., J Lum, 75(1997)173; E.Zych et al., JAlloy & Comp, 300-301(2000)495 ), but due to its inherent low density (4.55g / cm -3 ) restricts its practical application prospects in scintillation detection and other fields

Method used

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  • Luetcium aluminum garnet -base transparent ceramic and process for preparing same
  • Luetcium aluminum garnet -base transparent ceramic and process for preparing same
  • Luetcium aluminum garnet -base transparent ceramic and process for preparing same

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] High-purity lutetium oxide (4N), cerium oxide (4N) and analytically pure aluminum nitrate are formulated according to the strict ratio of atomic ratio Lu: Ce: Al = 2.985: 0.015: 5, respectively dissolved in high-grade pure nitric acid and double distilled water Preparation of Al from lutetium oxide, ceria and aluminum nitrate 3+ Mixed salt solution with a concentration of 0.1-0.3M, and then dissolve an appropriate amount of analytically pure urea in the mixed salt solution to obtain an aqueous urea solution with a concentration of 1-3M; heat the mixed solution prepared above slowly while stirring, and after about 1 hour, water The temperature rises to 90-95°C, heat preservation and stirring for 2-3 hours, then stop heating, continue stirring for 5-10 hours, filter the precipitate, and then wash the filter cake with distilled water and absolute ethanol for 2-3 times, and put the filter cake at 120°C Dry it for 24 hours, then place it in a muffle furnace for calcination a...

Embodiment 2

[0034]With high-purity lutetium oxide (4N), praseodymium oxide (4N) and analytical pure aluminum nitrate by atomic ratio Lu: Pr: Al=2.976: 0.024: 5 strict ratio batching, then according to the test method described in embodiment 1, A LuAG:Pr (Pr doping concentration of 0.8at.%) transparent ceramic with a relative density of 99.9% is obtained. The transmittance of the transparent ceramic with a thickness of 1.0 mm is close to 70% in the visible light region.

Embodiment 3

[0036] High-purity lutetium oxide (4N), cerium oxide (4N) and analytically pure aluminum nitrate are formulated according to the strict ratio of atomic ratio Lu: Ce: Al = 2.985: 0.015: 5, respectively dissolved in high-grade pure nitric acid and double distilled water Preparation of Al from Lutetium Oxide, Ceria and Aluminum Nitrate 3+ A mixed salt solution with a concentration of 0.2-0.3M. Dissolve an appropriate amount of analytically pure glycine in the mixed salt solution according to the molar ratio of nitrate:glycine=3:5, and stir to form a uniform solution. The beaker containing the solution was placed on a magnetic stirrer, heated to 60°C and kept stirring, and a sol was formed after several hours. Raise the temperature to 80°C and continue stirring to form a yellow transparent gel. Put the gel into a box furnace preheated to 150 °C, and burn it to form light yellow-green loose precursor powder. The precursor powder was heat-treated at 1000 °C for 2 h in the air atm...

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Abstract

The invention discloses a lutetium-aluminum carbuncle basic transparent ceramic and preparing method in the crystalline ceramics domain, which is characterized by the following: the crystalline ceramic is made up with Lu3-xRExAl5O12, wherein 0 C04B 35 / 44 C04B 35 / 622 2 5 2 2006 / 4 / 7 1837142 2006 / 9 / 27 100455536 2009 / 1 / 28 2009 / 1 / 28 2009 / 1 / 28 Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 Liu Xuejian Li Huili Huang Liping pan zhen 31002 Shanghai Patent Agency of the Chinese Academy of Sciences No.319 Yueyang Road, Shanghai 200031

Description

technical field [0001] The invention relates to a lutetium aluminum garnet-based transparent ceramic and a preparation method thereof, and belongs to the technical field of preparation of fine ceramics for transparent products containing rare earth oxides. Background technique [0002] The successful preparation of translucent alumina ceramics (US Pat.3026210) has opened up new application fields for ceramic materials. After decades of development, various transparent ceramics with excellent properties have been prepared, and the optical properties of some transparent ceramics have reached single crystal level. Transparent ceramics have become an important optical material and have been applied in high temperature windows, radiation detection, laser media and other fields. [0003] YAG is the abbreviation of yttrium aluminum garnet, its chemical formula is Y 3 Al 5 o 12 , by Y 2 o 3 and Al 2 o 3 The formed solid solution belongs to the cubic crystal system, has a gar...

Claims

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Application Information

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IPC IPC(8): C04B35/44C04B35/622
Inventor 刘学建李会利黄莉萍
Owner 江苏先进无机材料研究院
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