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High-transparency microcrystalline glass containing scintillation nanocrystals and preparation method thereof

A glass-ceramic and nano-crystal technology, applied in glass manufacturing equipment, glass molding, manufacturing tools, etc., can solve the problems of cumbersome preparation process, complicated process, not many, etc.

Active Publication Date: 2021-04-30
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] At present, there are not many patents related to scintillating glass-ceramics. Chinese invention patent CN 105399334 A discloses a kind of embedded GdTaO 4 A preparation method of scintillation glass-ceramics with a microcrystalline phase, but its luminous performance is affected by its raw materials, and the luminescence cannot be compared with scintillation crystals; Chinese invention patent CN 108147669 A reports a scintillation glass-ceramic with a rare earth-doped YAG microcrystalline phase material, its luminescent performance is equivalent to that of commercial scintillation crystals, but its preparation process is cumbersome, the process is complicated, and the overall preparation difficulty coefficient is relatively large, which limits its application

Method used

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  • High-transparency microcrystalline glass containing scintillation nanocrystals and preparation method thereof
  • High-transparency microcrystalline glass containing scintillation nanocrystals and preparation method thereof
  • High-transparency microcrystalline glass containing scintillation nanocrystals and preparation method thereof

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preparation example Construction

[0034] Highly transparent glass-ceramics containing scintillation nanocrystals and a preparation method thereof, comprising the following steps:

[0035] 1) Preparation of raw materials: Weigh the required glass raw materials in proportion, put the weighed raw materials in a mortar and grind them thoroughly, so that the raw materials are mixed evenly.

[0036] 2) High-temperature melting: transfer the glass mixed raw material obtained in step 1) to a crucible, and then place the crucible containing the raw material in a high-temperature furnace for firing. The cover plate covers the crucible.

[0037] 3) Casting: pouring the molten glass fired in step 2) onto the preheated mold, and cooling the molten glass rapidly to obtain glass.

[0038] 4) Annealing: Put the glass prepared in step 3) into a furnace at a temperature of 400-500° C. for 180-240 minutes for annealing treatment to eliminate thermal stress in the glass, and then cool to room temperature with the furnace to obtain...

Embodiment 1

[0045] Preparation of highly transparent glass-ceramics containing scintillation nanocrystals, the specific steps are as follows:

[0046] (1) Equipped with raw materials: choose SiO 2 , KF, LaF 3 , GdF 3 , CeF 3 As a raw material, the molar ratio between each raw material is SiO 2 :KF:LaF 3 :GdF 3 : CeF 3 =70:15:5:10:0.5 Ratio Accurately weigh a total of 30g of glass raw materials, put the weighed mixed raw materials into a mortar and grind them thoroughly for 15 minutes to obtain a uniformly mixed glass mixture.

[0047] (2) High-temperature melting: transfer the mixed glass raw materials to a quartz crucible, and then put the crucible containing the raw materials into a high-temperature furnace at 1570°C for 20 minutes. The cover plate covers the crucible.

[0048] (3) Casting molding: pour the molten glass stock solution on a copper plate preheated at 100°C, press another copper plate at the same temperature to form a 2mm sheet, and rapidly cool the glass stock sol...

Embodiment 2

[0053] Preparation of highly transparent glass-ceramics containing scintillation nanocrystals, the specific steps are as follows:

[0054] (1) Equipped with raw materials: choose SiO 2 , KF, LaF 3 , CeF 3 As a raw material, the molar ratio between each raw material is SiO 2 :KF:LaF 3 : CeF 3 =80:10:10:0.6 Ratio Accurately weigh a total of 30g of glass raw materials, put the weighed mixed raw materials into a mortar and fully grind for 15 minutes to obtain a uniformly mixed glass mixture.

[0055] (2) High-temperature melting: transfer the mixed glass raw materials to a quartz crucible, and then put the crucible containing the raw materials into a high-temperature furnace at 1600 ° C for 30 minutes. The cover plate covers the crucible.

[0056] (3) Casting molding: pour the molten glass stock solution on a copper plate preheated at 200°C, press another copper plate at the same temperature to form a 2mm sheet, and rapidly cool the glass stock solution to obtain glass.

[...

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Abstract

The invention discloses high-transparency microcrystalline glass containing scintillation nanocrystals and a preparation method thereof. The microcrystalline glass contains a microcrystalline phase KLa1-xGdxF4: Ce < 3 + >, x is equal to 0-1, and active ions are Ce < 3 + >. The microcrystalline glass is prepared through a traditional glass preparation method and a heat treatment mode. The Gd ions partially replace La in KLaF4 successfully in the heat treatment process, KLa1-xGdxF4: Ce < 3 + > crystals are separated out, the density of the microcrystalline glass is increased, and the Gd ions can serve as sensitizers in the crystals to improve the energy migration efficiency among the ions. The light output capacity of the prepared microcrystalline glass is remarkably improved, and the luminous intensity of fluorescence under X-ray excitation is obviously higher than that of commercial scintillation crystal BGO.

Description

technical field [0001] The invention relates to a highly transparent glass-ceramic containing scintillating nano crystals and a preparation method thereof, belonging to inorganic scintillating luminescent materials. Background technique [0002] As a luminescent material, the scintillator material can emit light in the ultraviolet to visible range under the excitation of high-energy rays such as X-rays, γ-rays or other radioactive high-energy particles. Scintillator materials generally have the characteristics of high luminous intensity, fast decay time, high density, and good radiation resistance, which can help people convert rays and high-energy particles beyond the range of human recognition into other forms of light that humans can recognize and control. Signal. It has a wide range of applications in nuclear physics and high-energy physics, geological radiation detection, and national defense security and nuclear medicine diagnosis. [0003] Scintillator materials can...

Claims

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Application Information

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IPC IPC(8): C03C10/16C03C4/12C03B19/02C03B25/00C03B32/02
CPCC03C10/16C03C4/12C03B19/02C03B25/00C03B32/02
Inventor 任晶谢玉清孙博超宋玉收张建中
Owner HARBIN ENG UNIV
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