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Method for preparing Yb3+ mixed lanthanum yttrium oxide upconversion luminous transparent laser ceramic

A technology of laser ceramics, lanthanum oxide and yttrium oxide, which is applied in the manufacturing process of special rare earth transparent laser ceramic materials, and can solve the problems of low luminous intensity and increased luminous intensity

Inactive Publication Date: 2008-03-26
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Another object of the present invention is: by adjusting La 2 o 3 content, improve Yb 3+ ion in Y 2 o 3 Yb in base single crystal and transparent ceramics 3+ The shortcomings of ion pair cooperation upconversion luminescence intensity are low, and Yb 3+ in Y 2-2x La 2x o 3 In the system with x(La 2 o 3 ) content increases, thereby greatly increasing the Yb 3+ Ion pair cooperation upconverts luminescence intensity; Simultaneous activation of ion Yb 3+ content increases within a certain composition range, Yb 3+ The intensity of ion-pair cooperative upconversion luminescence is also increased

Method used

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  • Method for preparing Yb3+ mixed lanthanum yttrium oxide upconversion luminous transparent laser ceramic

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The concrete process and steps of the present embodiment are as follows:

[0019] 1. Use commercially available high-purity 99.99% Y 2 o 3 , 99.95% La 2 o 3 and 99.95% Yb 2 o 3 as the raw material, the mass ratio of the three is according to the chemical formula Y 2-2x-2y La 2x Yb 2y o 3 As a basis, x=0.04, y=0.05; the molar content of each component is Yb 2 o 3 0.05mol, La 2 o 3 0.04mol, Y 2 o 3 0.91mol.

[0020] 2. Add the above batch materials into distilled water, place them in a ball mill, and carry out mixing and grinding. The ball milling time is 24 hours; after discharging, dry at 150°C;

[0021] 3. Then place it in a calciner for pre-calcination at 1200°C for 5 hours, and then put the powder into a ball mill for ball milling for 24 hours;

[0022] 4. After drying at 150°C, add 5wt% PVA binder for granulation; then press the powder into a block under 200MPa cold isostatic pressing;

[0023] 5. Then burn off the PVA binder in the air at a temp...

Embodiment 2

[0025] The processing step of the present embodiment is exactly the same as the above-mentioned embodiment 1, the difference is: Y 2-2x-2y La 2x Yb 2y o 3 In the formula, x=0.08, y=0.05; The molar content of each composition is Yb 2 o 3 0.05mol, La 2 o 3 0.08mol, Y 2 o 3 0.87mol; the sintering temperature is 1500°C; the sintering time is 10 hours; the dense and transparent Yb:Y is finally obtained 2-2x La 2x o 3 (i.e. Y 2-2x-2y La 2x Yb 2y o 3 ) laser ceramics.

Embodiment 3

[0027] The processing step of the present embodiment is exactly the same as the above-mentioned embodiment 1, the difference is: Y 2-2x-2y La 2x Yb 2y o 3 In the formula, x=0.12, y=0.05; The molar content of each composition is Yb 2 o 3 0.05mol, La 2 o 3 0.12mol, Y 2 o 3 0.83mol; the sintering temperature is 1400°C; the sintering time is 10 hours; the dense and transparent Yb:Y is finally obtained 2-2x La 2x o 3 (i.e. Y 2-2x-2y La 2x Yb 2y o 3 ) laser ceramics.

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Abstract

The present invention is up conversion luminous transparent Yb3+ doped lanthana-yttria laser ceramic material and its preparation process, and belongs to the field of special RE ceramic material technology. The Yb3+ doped lanthana-yttria laser ceramic in the expression of Y2-2x-2yLa2xYb2yO3, where,x=0.02-0.20 and y=0.02-0.15, is prepared with high purity Y2O3, La2O3 and Yb2O3 material, and through adding proper amount of distilled water and grinding in a ball mill for 24 hr, drying and pre-sintering in a calciner at 1000-1300 deg.c for 5 hr; ball milling in a ball mill for 24 hr, adding PVA adhesive in 5 wt%, pelletizing, cold isostatic pressing at 200 MPa to form biscuit; and finally sintering in reductive atmosphere at 1350-1800 deg.c for 3-30 hr.

Description

technical field [0001] The invention relates to a Yb-doped 3+ The invention discloses a preparation method of lanthanum oxide yttrium up-conversion luminescent transparent ceramic laser ceramics, which belongs to the technical field of manufacturing technology of special rare earth transparent laser ceramic materials. Background technique [0002] In recent years, the laser output power and slope efficiency of transparent ceramic Nd:YAG have reached or exceeded the level of similar single crystals. Following the laser output of YAG transparent ceramics, nanopowder vacuum sintering technology has a great impact on the preparation Cubic Sesquioxide Re 2 o 3 (Re=Y, Lu, Sc, Gd) Transparent polycrystalline ceramics are also effective. Doped with Nd 3+ or Yb 3+ Re 2 o 3 Transparent ceramics have also successively obtained laser output, among which Nd-doped 3+ or Yb 3+ the Y 2 o 3 Transparent polycrystalline ceramics perform best. Sesquioxide Re 2 o 3 It is a cubic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/50C04B35/622
Inventor 杨秋红徐军
Owner SHANGHAI UNIV