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Rare-earth-mixed barium borophosphate flashing luminous material, its preparing method and use

A flashing luminescence and barium borophosphate technology, which is applied in the direction of luminescent materials, chemical instruments and methods, can solve the problems of low luminous efficiency and easy deliquescence, and achieve the effect of simple equipment, low cost and safe operation

Inactive Publication Date: 2006-08-09
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The currently used scintillation materials are mainly NaI:Tl, PbWO 4 、 Bi 4 Ge 3 o 12 etc., but they still have some disadvantages, such as NaI:Tl is easy to deliquescence, long afterglow, Bi 4 Ge 3 o 12 Afterglow Long, PbWO 4 The luminous efficiency is low, and more importantly, these materials have been covered by foreign patents, which sets up trade barriers for such materials produced in my country to enter the European and American markets
So far, there have been no reports on the successful preparation of novel X-ray-excited high-efficiency scintillation materials using a safer and simpler method.

Method used

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  • Rare-earth-mixed barium borophosphate flashing luminous material, its preparing method and use
  • Rare-earth-mixed barium borophosphate flashing luminous material, its preparing method and use
  • Rare-earth-mixed barium borophosphate flashing luminous material, its preparing method and use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Press Ba 2.985 Eu 0.015 BP 3 o 12 The stoichiometric ratio is matched. BaCO 3 and Eu 2 o 3 Mix thoroughly and evenly at a molar ratio of 10:1, and set aside. Weigh the above BaCO 3 and Eu 2 o 3 0.064g of the mixture, another BaCO 3 1.119g, H 3 BO 3 0.124g, NH 4 h 2 PO 4 0.69g, fully ground and mixed in an agate mortar and placed on Al 2 o 3 In the crucible, after capping, put Fe-Cr-Al wire into the muffle furnace as the heating element, heat up at a heating rate of 5 °C / min, and burn at 300 °C for 5 hours; after the pre-fired product is naturally cooled, it is Take it out, fully grind and mix it evenly, and shape it into a Φ20 sheet on a tablet machine, with a pressure of 170Mpa, and keep the pressure for 30s; finally, put the formed sheet on the Al 2 o 3 In the crucible, after being covered, it is put into a muffle furnace with Fe-Cr-Al wire as the heating element and burned at a heating rate of 5°C / min. The burning temperature is 1000°C and the reac...

Embodiment 2

[0014] Press Ba 2.97 Eu 0.03 BP 3 o 12 The stoichiometric ratio is matched. BaCO 3 and Eu 2 o 3 Mix thoroughly and evenly at a molar ratio of 10:1, and set aside. Weigh the above BaCO 3 and Eu 2 o 3 0.129g of the mixture, another take BaCO 3 1.054g, H 3 BO 3 0.124g, NH 4 h 2 PO 4 0.69g, fully ground and mixed in an agate mortar and placed on Al 2 o 3 In the crucible, after capping, put Fe-Cr-Al wire into the muffle furnace as the heating element, heat up at a heating rate of 5 °C / min, and burn at 300 °C for 5 hours; after the pre-fired product is naturally cooled, it is Take it out, fully grind and mix it evenly, and shape it into a Φ20 flake on a tablet press, with a pressure of 170Mpa, and keep the pressure for 30s; put the formed flake in a smaller capacity Al 2 o 3 Put the crucible into the small-capacity crucible after being covered, put graphite or carbon into the gap between the large-capacity crucible and the small-capacity crucible, and cover the ou...

Embodiment 3

[0016] Press Ba 2.91 Eu 0.09 BP 3 o 12 The stoichiometric ratio is matched. BaCO 3 and Eu 2 o 3 Mix thoroughly and evenly at a molar ratio of 10:1, and set aside. Weigh the above BaCO 3 and Eu 2 o 3 0.387g of the mixture, another take BaCO 3 0.793g, H 3 BO 3 0.124g, NH 4 h 2 PO 4 0.69g. The rest is the same as in Example 2, and the white powder obtained after grinding is the required X-ray-excited scintillating luminescent material, and the luminous intensity is 1.47 times that of Example 1.

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Abstract

This invention relates to a light emitting material with strong light output and quick attenuation excited by X rays and its preparation method, in which, the composition formula of the flash luminous material is (Ba(1-x)Eux)3BP3012, in which, x is the content(0<x<0.10) of an activation agent and the material is prepared by a traditional solid composition method, when 0<X<0.01, EU3+ can be recovered to Eu2+ in air, but when 0.01< or equal to x<0.10, a double pot recovery method is needed for high temperature burning.

Description

technical field [0001] The present invention relates to a scintillating luminescent material and its preparation method and application, more precisely, it relates to rare earth-doped barium borophosphate scintillating luminescent material with strong light output and fast decay under X-ray excitation, its preparation method and application . Background technique [0002] Inorganic scintillation materials are a class of luminescent materials with high value and great economic benefits. Due to the development of high technologies such as nuclear physics, magnetic resonance imaging, positron emission tomography (PET), X-ray computerized tomography (ie CT) and Requirements, new inorganic scintillation materials made significant progress in the late 1980s, opened up another new application market, and it is expected that it will have greater development in the 21st century. In recent years, scintillation materials have also emerged in security inspections (container rapid inspe...

Claims

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Application Information

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IPC IPC(8): C09K11/81
Inventor 段成军赵景泰吴雪艳杨昕昕陈昊鸿
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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