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Method for preparing rare earth ion-doped yttrium aluminum garnet (Re: YAG) transparent laser ceramic by using hot-pressing post treatment

A technology of yttrium-aluminum garnet and laser ceramics, which is applied in the field of preparation of transparent laser ceramics doped with yttrium-aluminum garnet, can solve the problems of high preparation cost, difficult porosity, and high cost, and improve sintering efficiency, safety, and repeatability. strong effect

Active Publication Date: 2013-02-13
北京雷生强式科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] ①This method is highly dependent on the particle size, particle distribution, morphology, sintering activity, purity and other properties of commercially available raw materials, and the process repeatability is poor. Since there is no external driving force in the vacuum sintering process, it is difficult for the pores in the ceramic body to be vacuum-sintered. It is completely excluded in the sintering process, and it is difficult to prepare transparent ceramics with high optical quality; ②This method uses a steel mold as a dry pressing mold, and the molded green body is easily polluted by the mold
[0012] This technology requires expensive hot isostatic pressing equipment, and the preparation cost is high

Method used

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  • Method for preparing rare earth ion-doped yttrium aluminum garnet (Re: YAG) transparent laser ceramic by using hot-pressing post treatment
  • Method for preparing rare earth ion-doped yttrium aluminum garnet (Re: YAG) transparent laser ceramic by using hot-pressing post treatment
  • Method for preparing rare earth ion-doped yttrium aluminum garnet (Re: YAG) transparent laser ceramic by using hot-pressing post treatment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] Commercially available Y with a purity of 5N 2 o 3 、Nd 2 o 3 、Al 2 o 3 as raw material, according to the chemical formula (Y 0.98 Nd 0.02 ) 3 al 5 o 12 Prepare 40g of Nd:YAG ceramics with a Nd-doped concentration of 2.0at%, and calculate the mass of each oxide raw material as Y 2 o 3 :22.2429g, Nd 2 o 3 :0.6764g, Al 2 o 3 : 17.0807g, each oxide was weighed in turn with a precision electronic analytical balance (accuracy 0.0001g), and then put into an alumina ball mill jar, 80g of absolute ethanol was added, and 200g of alumina balls with a diameter of Φ6mm were used as the ball milling medium, and 0.32g (equivalent to 0.8% of the total weight of the oxide powder) TEOS is used as a sintering aid, and 0.4g of polyacrylic acid (equivalent to 1.0% of the total weight of the oxide powder) is used as a dispersant.

[0067] After ball milling and mixing for 12 hours at a speed of 500 rpm. The ball-milled mixed slurry was taken out and spray-dried with an inlet ...

Embodiment 2

[0071] Commercially available Y with a purity of 4N 2 o 3 、Nd 2 o 3 、Al 2 o 3 , CeO 2 For ceramics, according to the chemical formula (Y 0.989 Nd 0.01 Ce 0.001 ) 3 al 5 o 12 Prepare 40g of Nd:Ce:YAG powder with a Nd-doped concentration of 1.0at% and a Ce-doped ion concentration of 0.1at%, and calculate the mass of each oxide raw material as Y 2 o 3 :22.5040g, Nd 2o 3 :0.3391g, CeO 2 :0.0.347g, Al 2 o 3 : 17.1239g, each oxide was weighed in turn with a precision electronic analytical balance (accuracy 0.0001g), and then put into a nylon ball mill jar, 160g of absolute ethanol was added, 200g of alumina balls with a diameter of Φ5mm were used as the ball milling medium, and 0.32 g (equivalent to 0.8% of the total weight of oxide powder) TEOS as a sintering aid, 0.4g oleic acid (equivalent to 1.0% of the total weight of oxide powder) and 0.8g polyethylene glycol (PEG400, equivalent to oxide powder 2.0% of the total body weight) as a dispersant.

[0072] After b...

Embodiment 3

[0076] Commercially available Y with a purity of 4N 2 o 3 、Nd 2 o 3 、Al 2 o 3 as raw material, according to the chemical formula (Y 0.96 Nd 0.04 ) 3 al 5 o 12 Prepare 40g of Nd:YAG ceramic powder with a Nd-doped concentration of 4.0at%, and calculate the mass of each oxide raw material as Y 2 o 3 :21.6684g, Nd 2 o 3 : 1.3453g, Al 2 o 3 : 16.9862g, weigh each oxide in turn with a precision electronic analytical balance (accuracy 0.0001g), then put it into an agate ball mill jar, add 40g of absolute ethanol, 200g of agate balls with a diameter of Φ6mm as a ball milling medium, and add 0.2g (equivalent to 0.5% of the total weight of oxide powder) TEOS and 0.04gMgO (equivalent to 0.1% of the total weight of oxide powder) as sintering aids, 0.4g polyammonium methacrylate (equivalent to 1.0% of the total weight of oxide powder) %) as a dispersant.

[0077] After ball milling and mixing for 20 hours at a speed of 400 rpm. The ball-milled mixed slurry was taken out an...

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Abstract

The invention discloses a method for preparing rare earth ion-doped yttrium-aluminum garnet (Re: YAG) transparent laser ceramic by using hot-pressing post treatment. The method comprises the steps of using oxide powder as a raw material, mixing with a ball mill, drying, forming, performing cold isotactic processing to obtain a ceramic biscuits, then dumping, and carrying out vacuum sintering to obtain the Re: YAG ceramic; and performing powder-embedded hot pressing, annealing and optically polishing on the Re: YAG ceramic to obtain the final Re: YAG transparent laser ceramic. The method provided by the invention has the advantages of strong controllability and repeatability, and low cost, and the Re: YAG transparent ceramic prepared by the method provided by the invention has high transmittance.

Description

technical field [0001] The invention belongs to the field of preparation of transparent ceramics, in particular to a method for preparing transparent laser ceramics doped with yttrium aluminum garnet. Background technique [0002] With the development of modern technology and industry, solid-state lasers have been widely used in cutting, welding, drilling, surface treatment, medical treatment, beauty, national defense and other fields. The laser working medium material is the "heart" of the solid-state laser, and its performance directly determines the performance and technical level of the solid-state laser. Traditional solid-state laser materials are mainly rare earth (Re) ions doped with yttrium aluminum garnet ((Y 1-x Re x ) 3 Al 5 o 12 , 0≤x≤1, referred to as Re:YAG, the most important of which is neodymium-doped yttrium aluminum garnet, the molecular formula is Y 1-x Nd x ) 3 Al 5 o 12 , 0≤x≤0.1, referred to as Nd:YAG) single crystal as the representative las...

Claims

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Application Information

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IPC IPC(8): C04B35/44C04B35/505C04B35/622
Inventor 李兴旺李洪峰杨国利赵海亮王永国
Owner 北京雷生强式科技有限责任公司
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