High-density gadolinium and tungsten borate scintillation glass and preparation method thereof

A technology of gadolinium tungsten borate and scintillation glass, applied in the field of luminescent materials, can solve the problem of low density of scintillation glass, and achieve the effects of short preparation period, improved luminous efficiency, and easy adjustment of chemical components

Inactive Publication Date: 2017-04-26
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Abstract
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  • Application Information

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Problems solved by technology

[0005] Aiming at the problem of low density of scintillation glass at present, the object of the present invention is to provide a high-density gadolinium tungsten borate scintillation glass and its preparation method

Method used

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  • High-density gadolinium and tungsten borate scintillation glass and preparation method thereof
  • High-density gadolinium and tungsten borate scintillation glass and preparation method thereof

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Embodiment 1

[0036] 1. Preparation process

[0037] According to glass composition 20.5Gd 2 o 3 -47.5WO 3 -30B 2 o 3 -2Eu 2 o 3 (mol%) Accurately weigh the glass raw material, fully grind the glass raw material in an agate mortar for 15 minutes, pour the ground raw material into a platinum crucible, and put it in a high-temperature electric furnace at 1100°C for 30 minutes to obtain uniform glass melting. body. Then pour the above melt into an iron plate preheated to 300°C, and then use another iron plate to press it into shape, and quickly place the formed glass in a muffle furnace at 400°C for 1 hour for annealing treatment. The obtained scintillating glass primary product is processed into the scintillating glass of the present invention after cutting, surface grinding and polishing. Measured by the Archimedes method, the density of the glass is 6.19g / cm 3 . The transmittance of the invented scintillation glass is as figure 1 as shown, figure 1 Middle illustration is the phy...

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Abstract

The invention relates to high-density gadolinium and tungsten borate scintillation glass and a preparation method thereof. The scintillation glass comprises a matrix Gd2O3-WO3-B2O3 and luminescence center Eu3+ ions dispersed on the matrix. The matrix comprises 20-25 mol% of Gd2O3, 40-60 mol% of WO3, 10-30 mol% of B2O2 and 0.05-5 mol% of Eu3+ ions. The radius of Gd3+ ions in the rare earth doped gadolinium and tungsten borate scintillation glass is moderate, and can be effectively subjected to solution treatment with the Eu3+ ions; Gd3+ can transfer energy to a Eu3+ luminescence center, and accordingly light emitting efficiency is improved.

Description

technical field [0001] The invention relates to a preparation method of a high-density gadolinium tungsten borate scintillation glass, in particular to a rare earth ion-doped gadolinium tungsten borate scintillation glass and a preparation method thereof, belonging to the field of luminescent materials. Background technique [0002] A scintillation material is a photofunctional material that absorbs high-energy particles such as α, β, γ-rays or X-rays, and converts part of the absorbed energy into ultraviolet or visible light. It plays an extremely important role in high-energy physics experiments, nuclear medical imaging, anti-terrorism security inspection, oil exploration and other fields, especially in the construction of high-energy physical calorimeters and nuclear medical imaging equipment, which have wide applications and huge demands. Scintillation crystals are currently the most studied and widely used scintillators, such as Bi 4 Ge 3 o 12 (BGO), PbWO 4 (PWO) et...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C3/15C03C4/12
CPCC03C3/15C03C4/12
Inventor 王勇毛日华
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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