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Nano structure yttrium aluminum garnet-based transparent ceramic material, preparation method and application thereof

A technology of yttrium aluminum garnet and transparent ceramics, which is applied in the field of nanostructure yttrium aluminum garnet-based transparent ceramic materials, and can solve problems such as the influence of light transmission

Active Publication Date: 2018-04-17
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the prepared ceramic material is a micron ceramic, and the light transmission is also affected, and it can only be translucent.

Method used

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  • Nano structure yttrium aluminum garnet-based transparent ceramic material, preparation method and application thereof
  • Nano structure yttrium aluminum garnet-based transparent ceramic material, preparation method and application thereof
  • Nano structure yttrium aluminum garnet-based transparent ceramic material, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-12

[0094] Example 1-12: Preparation of nanostructured YAG-based transparent ceramic material by pneumatic suspension without container solidification-amorphous crystallization method

[0095] First, the bulk glass precursor material was prepared by a pneumatic suspension container-free solidification method. The specific method is as follows:

[0096] (1) According to the raw material proportioning (molar percentage composition) of the embodiment 1-12 listed in table 1, take Y respectively 2 o 3 Raw materials, Al 2 o 3 Raw materials and optional other metal oxide raw materials Re 2 o 3 (where, Re 2 o 3 It is a rare earth oxide, specifically: cerium oxide (CeO 2 ), dysprosium oxide (Dy 2 o 3 ), erbium oxide (Er 2 o 3 ), europium oxide (Eu 2 o 3 ), gadolinium oxide (Gd 2 o 3 ), holmium oxide (Ho 2 o 3 ), lanthanum oxide (La 2 o 3 ), lutetium oxide (Lu 2 o 3 ), neodymium oxide (Nd 2 o 3 ), praseodymium oxide (Pr 6 o 11 ), samarium oxide (Sm 2 o 3 ), terbiu...

Embodiment 13

[0105] In the preparation process of the amorphous crystallization method, the heat treatment regime is heat treatment at 1100° C. for 2 hours, and the other preparation methods and conditions are the same as in Example 3 to obtain a nanostructured YAG-based transparent ceramic material.

[0106] figure 2 It is an optical photograph of the YAG-based transparent ceramic material of Example 13.

[0107] image 3 It is the transmittance curve of the YAG-based transparent ceramic material in the visible light to mid-infrared band in Example 13. It can be seen from the figure that the sample is highly transparent in the visible light to mid-infrared band, and the highest transmittance has reached that of a YAG single crystal. The theoretical maximum transmittance (85%), the infrared cut-off wavelength is as high as 6.5μm.

[0108] Figure 4 It is the microstructure photograph of the nanostructure YAG-based transparent ceramic material of the present embodiment 13, as can be see...

Embodiment 14-20

[0109] Example 14-20: Preparation of YAG-based transparent ceramic material by flame spray quenching-viscous sintering-amorphous crystallization method

[0110] First, the micron glass powder is prepared by the flame spray quenching method, the specific method is as follows:

[0111] (1) Synthetic crystalline raw material powder: according to the raw material proportioning (mol percentage) of the embodiment 14-20 listed in table 3, take Y respectively 2 o 3 Raw materials, Al 2 o 3 Feedstock and optional CeO 2 Raw material, the raw material is high-purity (99.99%) powder or analytically pure (98%) powder, after being fully mixed, heated to 1500 ° C in the air for reaction and kept for 2 hours, and the obtained powder is ball-milled to 1 μm-2 μm;

[0112] (2) The powder described in step (1) is granulated: prepare PVA, PAA, n-octanol and solids content to be respectively 0.5%, 0.5%, 0.5% and 65% granulation slurry, spray granulation The machine sprays and granulates the slu...

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Abstract

The invention discloses a nano structure yttrium aluminum garnet-based transparent ceramic material, a preparation method and an application thereof. A transparent ceramic made of the material is of anano composite-phase structure consisting of YAG and Al2O3, and in addition the grain sizes of a YAG crystal phase and an Al2O3 crystal phase are both smaller than 100nm. A YAG-based transparent ceramic is prepared from an amorphous block glass precursor through thermal treatment, in the thermal treatment process, a part of aluminum dioxide in the block glass precursor is reacted with yttrium oxide, then the YAG crystal phase is generated, and the generated YAG crystal phase and the residual aluminum oxide crystal phase form a composite phase nano structure. The YAG transparent ceramic material has hardness and elastic modus comparable to or even superior to those of a YAG single crystal, is optically transparent between visible light and middle-infrared bands, has excellent photoluminescence properties after light activated ion doping, and has wide application prospects in fields such as laser, fluorescence, flicking light emission, optical lenses, artware and jewelries.

Description

technical field [0001] The invention belongs to the technical field of transparent ceramic materials, and relates to a nanostructure yttrium aluminum garnet-based transparent ceramic material, its preparation and application. Background technique [0002] Yttrium aluminum garnet (Y 3 Al 5 o 12 , YAG) transparent ceramics are an important photoluminescent matrix material with excellent mechanical, thermal properties, high temperature stability and optical properties, and have important applications in the fields of laser, fluorescence and scintillation. Judging from the current reports, the preparation of YAG transparent ceramics mainly adopts powder sintering technology. However, in order to achieve high transparency of YAG ceramics, high purity raw materials, fine grains and good dispersion are required, and special sintering methods are required to fully eliminate the pores in the ceramics to achieve full densification of the ceramics and extremely thin grain boundaries...

Claims

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Application Information

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IPC IPC(8): C04B35/44C04B35/64
CPCC04B35/44C04B35/64C04B2235/3217C04B2235/781C04B2235/96C04B2235/9653
Inventor 李建强马晓光李晓禹马炳倩
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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