A kind of high-density tellurite scintillation glass and its preparation method

A technology of scintillation glass and tellurate, which is applied in glass manufacturing equipment, scintillation components, glass molding, etc., can solve the problems of unfriendliness, reduce the mechanical strength of glass, etc., and achieve easy adjustment of chemical composition, increase in density, and chemical stability. good effect

Active Publication Date: 2022-05-17
JINGGANGSHAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the tellurite scintillation glass raw material contains lead element which is extremely unfriendly to the human body and the environment, and contains nearly 25% fluorine element, which reduces the mechanical strength of the glass

Method used

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  • A kind of high-density tellurite scintillation glass and its preparation method
  • A kind of high-density tellurite scintillation glass and its preparation method
  • A kind of high-density tellurite scintillation glass and its preparation method

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preparation example Construction

[0067] In a specific implementation, the present application provides the above-mentioned high-density tellurite scintillation glass preparation method, which is characterized in that the traditional high-temperature melting method is adopted, that is, the glass raw materials are fully mixed, melted, molded and annealed. Prepared. It specifically includes the following steps:

[0068] S1: First, accurately weigh each raw material according to the composition of the scintillation glass, and mix all the raw materials evenly. TeO in the glass component 2 、Gd 2 o 3 、Lu 2 o 3 and WO 3 The four components are directly introduced through the corresponding raw materials, while the activator ions are introduced through the corresponding rare earth oxides, rare earth fluorides, rare earth carbonates or rare earth nitrate compounds; the purity of all raw materials is analytically pure or above;

[0069] S2: Then, pour the uniformly mixed raw materials into an alumina crucible or a...

Embodiment 1

[0080] 1. Preparation process

[0081] The concrete formula of embodiment 1 of the present invention: 50TeO 2 -10Gd 2 o 3 -40WO 3 , where the activator is Eu 3+ ions, through Eu 2 o 3 Introduced, its external doping concentration is 0.25mol%. The melting atmosphere is air.

[0082] Eu in Example 1 3+ The preparation steps of activated high-density tellurite scintillation glass are as follows:

[0083] Step 1: According to Eu 3+ Formula for activating high-density tellurite scintillation glass Accurately weigh each component, mix well and pour it into an alumina crucible, and melt it in an air atmosphere at 950°C for 30 minutes by high-temperature melting method;

[0084] Step 2: Pour the above-mentioned homogeneous melt into a preheated 400°C stainless steel mold for casting, and cool naturally to form glass; and

[0085] Step 3: Put the above glass in a muffle furnace at 440° C. for 3 hours and heat it for 3 hours for annealing treatment to obtain the scintillation...

Embodiment 2

[0093] The preparation process is basically the same as in Example 1, except that the glass composition of Example 2 is: 64TeO 2 -16Lu 2 o 3 -20WO 3 , where the activator is Tb 3+ ion, through Tb 4 o 7 Introduced, its external doping concentration is 0.25mol%. The melting temperature is 970°C, and the melting atmosphere is air.

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Abstract

The application discloses a high-density tellurate scintillation glass and a preparation method thereof, belonging to the field of optical materials. The composition and ratio of the tellurate glass are: TeO 2 : 25‑100mol%; Gd 2 o 3 : 0‑20mol%; Lu 2 o 3 : 0‑17.5mol%; WO 3 : 0‑60mol%; and rare earth ion activators; among them, TeO 2 、Gd 2 o 3 、Lu 2 o 3 and WO 3 The sum of the four components is 100mol%; wherein, the external or internal doping concentration of the rare earth ion activator is TeO 2 、Gd 2 o 3 、Lu 2 o 3 and WO 3 0.1‑16 mol% of the sum of the four components. The present application also discloses a method for preparing the above-mentioned high-density tellurite scintillation glass. The preparation temperature of the high-density tellurite scintillation glass described in this article does not exceed 1000°C, and the density is 5.50-6.57g / cm 3 Among them, it has a wide range of applications in X-ray medical imaging, industrial online inspection, national security supervision, high-energy physics or nuclear physics experiments.

Description

technical field [0001] The invention relates to the technical field of scintillation materials. Specifically, the invention relates to a high-density tellurite scintillation glass doped with rare earth ions and a preparation method thereof. Background technique [0002] Scintillator is a light function conversion material that emits visible light or near-ultraviolet light after absorbing high-energy rays. It has been widely used in high-energy physics, nuclear physics, astrophysics, geophysics, industrial flaw detection, medical imaging and safety detection application. [0003] Scintillation glass is expected to replace commercial scintillation crystals due to its advantages such as easy adjustment of chemical composition, good optical uniformity, easy realization of large size, and simple preparation method. The greater advantage of scintillation glass is that it can be drawn into optical fibers and made into optical fiber panels, thereby improving the detection efficien...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C3/12C03B19/02C03B25/00C03C13/04C03C4/12G01T1/00G21K4/00
CPCC03C3/12C03B19/02C03B25/00C03C13/048C03C4/12G01T1/003G21K4/00
Inventor 孙心瑗周闽军邓昌滨王文峰杨庆梅
Owner JINGGANGSHAN UNIVERSITY
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