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Method for fabricating Mg, Ti adulterated Al2O3 crystalline material, and transparent laser ceramics

A technology of laser ceramics and crystal materials, applied in the direction of polycrystalline material growth, crystal growth, active medium materials, etc., can solve problems such as crystal devitrification, and achieve the effect of low manufacturing cost and simple process

Inactive Publication Date: 2006-02-01
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Ti in Ti:Sapphire single crystal 3+ replace Al 2 o 3 Middle Al 3+ site, but in an oxidizing atmosphere, Ti 3+ Ions are easily oxidized to Ti 4+ , and devitrifies the crystal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] In this example, the preparation of Al 2 o 3 The specific process steps of transparent laser ceramics are as follows:

[0017] 1. Using high-purity 99.99% Al 2 o 3 , 99% MgO and 99.9% TiO 2 As raw material, with Al 2 o 3 As the base material, MgO and TiO 2 as doping material; with Al 2 o 3 The weight of the base material is 100 as the measurement basis, and the doping amount of the doping material is: MgO: 0.1wt%, TiO 2 : 0.05wt%;

[0018] 2. The Al prepared according to the above formula 2 o 3 The matrix material and each dopant material are stirred and mixed, and the mixture is mixed with distilled water for 24 hours;

[0019] 3. Then dry at a temperature of 150°C, then add a polyvinyl alcohol binder with a concentration of 5wt%, and the addition amount is 5wt%, and granulate;

[0020] 4. The powder is pressed into a sheet-like sample under 200MPa cold isostatic pressing, then the polyvinyl alcohol binder is burned off at a temperature of 800°C, and then ...

Embodiment 2

[0023] The preparation process steps of this embodiment are the same as those of the above-mentioned embodiment 1. The specific steps are as follows:

[0024] 1. Using high-purity 99.99% Al 2 o 3 , 99% MgO and 99.9% TiO 2 As raw material, with Al 2 o 3 As the base material, MgO and TiO 2 as doping material; with Al 2 o 3 The weight of the base material is 100 as the measurement basis, and the doping amount of the doping material is: MgO: 0.1wt%, TiO 2 : 0.1wt%;

[0025] 2. The Al prepared according to the above formula 2 o 3 The matrix material and each dopant material are stirred and mixed, and the mixture is mixed with distilled water for 24 hours;

[0026] 3. Then dry at a temperature of 150°C, then add a polyvinyl alcohol binder with a concentration of 5wt%, and the addition amount is 5wt%, and granulate;

[0027] 4. The powder is pressed into a sheet-like sample under 200MPa cold isostatic pressing, then the polyvinyl alcohol binder is burned off at a temperat...

Embodiment 3

[0030] The preparation process steps of this embodiment are the same as those of the above-mentioned embodiment 1. The specific steps are as follows:

[0031] 1. Using high-purity 99.99% Al 2 o 3 , 99% MgO and 99.9% TiO 2 As raw material, with Al 2 o 3 As the base material, MgO and TiO 2 as doping material; with Al 2 o 3 The weight of the base material is 100 as the measurement basis, and the doping amount of the doping material is: MgO: 0.1wt%, TiO 2 : 0.4wt%;

[0032] 2. The Al prepared according to the above formula 2 o 3 , MgO and TiO 2 Stir and mix, and mix and grind the mixture with distilled water for 24 hours;

[0033] 3. Then dry at a temperature of 150°C, then add a polyvinyl alcohol binder with a concentration of 5wt%, and the addition amount is 5wt%, and granulate;

[0034] 4. The powder is pressed into a sheet-like sample under 200MPa cold isostatic pressing, then the polyvinyl alcohol binder is burned off at a temperature of 800°C, and then pre-fired a...

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Abstract

A process for preparing the Mg and Ti doped Al2O3 crystal and its transparent laser ceramics includes such steps as proportionally mixing Al2O3, MgO and TiO2, adding distilled water, grinding for 24 hr, baking at 150 deg.C, adding polyvinyl alcohol, granulating, cold isostatic pressing to become sheet, precalcining at 1300 deg.C for 3 hr, and sintering in Mo-wire furnace at 1650-1800 deg.C for 1-15 hr.

Description

technical field [0001] The invention relates to a Mg, Ti co-doped Al 2 o 3 The invention discloses a crystal material and a preparation method of transparent laser ceramics, which belong to the technical field of special ceramics manufacturing technology. Background technique [0002] Ti:Al 2 o 3 Single crystal titanium sapphire has the characteristics of wide gain, high saturation flux, large peak gain interface, high quantum efficiency, high thermal conductivity, and high laser damage threshold. Ti:Al 2 o 3 Single crystal is a femtosecond ultrashort pulse laser (fs, 10 -15 seconds) and high power tunable laser terawatt level (TW, 10 12 W), petawatts (thousand TW, 10 15 W) The excellent oscillation and amplification medium of the system is currently the most comprehensive and widely used tunable laser material, and it is also the most ideal femtosecond ultrafast laser crystal recognized internationally. At present, in order to obtain higher power and intensity lase...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/115C30B29/20C30B1/00H01S3/16
Inventor 杨秋红曾智江
Owner SHANGHAI UNIV
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