Rare-earth-ion-doped LiLaCl4 microcrystalline glass and preparation method thereof

A technology of glass-ceramics and rare-earth ions, which is applied in the field of rare-earth-ion-doped LiLaCl4 glass-ceramics and its preparation, can solve problems such as difficulty in growing large-sized crystals, affecting practical applications, and deliquescent crystals, achieving superior scintillation performance, Low production cost and good mechanical properties

Active Publication Date: 2014-07-30
湖州优研知识产权服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Scintillation crystals generally have the advantages of radiation resistance, fast decay, and high light output, but scintillation crystals also have the following serious disadvantages: difficult to prepare, expensive
But L

Method used

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  • Rare-earth-ion-doped LiLaCl4 microcrystalline glass and preparation method thereof
  • Rare-earth-ion-doped LiLaCl4 microcrystalline glass and preparation method thereof
  • Rare-earth-ion-doped LiLaCl4 microcrystalline glass and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0023] Example 1: Table 1 shows the glass formula of Example 1 and the first crystallization temperature value.

[0024] Table 1

[0025]

[0026] The specific preparation process is as follows: In the first step, weigh 50 grams of analytically pure raw materials according to the formula in Table 1, and add 3 grams of NH 4 HF 2 , 3 grams of NH 4 HCl 2 , After mixing the raw materials evenly, pour them into a quartz crucible and melt them at a melting temperature of 1300°C. Keep holding for 2 hours. Pour the glass melt into a cast iron mold, then place it in a muffle furnace for annealing, and keep it at the glass transition temperature Tg. After hours, the temperature is reduced to 50°C at a rate of 10°C / hour, the muffle furnace is turned off and the temperature is automatically reduced to room temperature, and the glass is taken out; in the second step, according to the thermal analysis (DTA) experimental data of the glass, the first crystallization temperature is 715 ℃, put the ...

Example Embodiment

[0028] Example 2: Table 2 shows the glass formula of Example 2 and the first crystallization temperature value.

[0029] Table 2

[0030]

[0031] The specific preparation process is as follows: In the first step, weigh 50 grams of analytically pure raw materials according to the formula in Table 2, and add 3 grams of NH 4 HF 2 , 3 grams of NH 4 HCl 2 , After mixing the raw materials evenly, pour them into a corundum crucible and melt them at a melting temperature of 1450°C. Keep the temperature for 1 hour. Pour the glass melt into the cast iron mold, then put it in a muffle furnace for annealing, and keep it at the glass transition temperature Tg. 2 After hours, the temperature is lowered to 50°C at a rate of 10°C / hour, the muffle furnace is turned off and the temperature is automatically cooled to room temperature, and the glass is taken out; in the second step, according to the thermal analysis (DTA) experimental data of the glass, the first crystallization temperature is 717 ℃...

Example Embodiment

[0033] Example 3: Table 3 shows the glass formula and the first crystallization temperature value of Example 3.

[0034] table 3

[0035]

[0036] The specific preparation process is as follows: In the first step, weigh 50 grams of analytically pure raw materials according to the formula in Table 3, and add 3 grams of NH 4 HF 2 , 3 grams of NH 4 HCl 2 , After mixing the raw materials evenly, pour them into a quartz crucible and melt them at a melting temperature of 1400°C and hold for 1.5 hours. Pour the glass melt into a cast iron mold, then place it in a muffle furnace for annealing, and keep it at the glass transition temperature Tg 2 After hours, the temperature is reduced to 50°C at a rate of 10°C / hour, the muffle furnace is turned off and the temperature is automatically reduced to room temperature, and the glass is taken out. In the second step, according to the thermal analysis (DTA) experimental data of the glass, the first crystallization temperature is 721℃. The glass i...

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Abstract

The invention discloses a rare-earth-ion-doped LiLaCl4 microcrystalline glass and a preparation method thereof. The microcrystalline glass is composed of the following components in percentage by mole: 35-45 mol% of P2O5, 15-23 mol% of Nb2O5, 16-24 mol% of SrF2, 15-20 mol% of LiLaCl4 and 1-4 mol% of LnCl3. The LnCl3 is CeCl3, EuCl3, TbCl3, PrCl3 or NdCl3. The preparation method comprises the following steps: preparing P2O5-Nb2O5-SrF2-LiLaCl4-LnCl3 glass by a fusion process, and carrying out heat treatment to obtain the transparent LiLaCl4 microcrystalline glass. The LiLaCl4 microcrystalline glass has the advantages of deliquescence resistance, favorable mechanical properties, higher short-wavelength blue-violet light transmission rate, strong light output, quick attenuation, favorable energy resolution, favorable time resolution and the like. The preparation method of the microcrystalline glass is simple and lower in production cost.

Description

technical field [0001] The present invention relates to a rare earth ion doped glass ceramics, in particular to a rare earth ion doped LiLaCl used as a scintillation material 4 Glass-ceramic and its preparation method. Background technique [0002] Scintillation material is a light functional material that can emit visible light under the excitation of high-energy rays (such as x-rays, γ-rays) or other radioactive particles. It is widely used in nuclear medicine diagnosis, high-energy physics and nuclear physics experimental research, industry and geology. exploration and other fields. Depending on the application field, the requirements for scintillators are also different, but in general scintillator materials should have the following characteristics: high luminous efficiency, fast fluorescence decay, high density, low cost and good radiation resistance. Scintillation crystals generally have the advantages of radiation resistance, fast decay, and high light output, but ...

Claims

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Application Information

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IPC IPC(8): C03C10/16
Inventor 王倩张约品夏海平杨斌张为欢欧阳绍业
Owner 湖州优研知识产权服务有限公司
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