Preparation method of transparent ceramic glitter material

A technology of scintillation materials and transparent ceramics, applied in the field of cubic phase inorganic transparent ceramic scintillation materials, can solve the problems of difficulty in avoiding the second phase, decreased luminous brightness, high hardness, etc.

Inactive Publication Date: 2010-03-10
EAST CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the high-temperature solid-phase method also has certain disadvantages: this method requires the crystals to grow slowly under high temperature for several hours, and the obtained products generally have larger grains and high hardness, and need to be ground by ball milling, so the crystal form may be damaged. to damage, the composition is uneven, and the luminous brightness is greatly reduced. In addition, the energy consumption is large, the preparation cycle is long, and it is difficult to avoid the second phase.
The disadvantage of the sol-gel method is that because of the use of metals, the cost is high, the production cycle is long, and there is no obvious improvement in luminescence performance

Method used

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  • Preparation method of transparent ceramic glitter material
  • Preparation method of transparent ceramic glitter material
  • Preparation method of transparent ceramic glitter material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] a), weigh 10g Gd 2 o 3 Soluble in HNO 3 1.8955mol / L Gd(NO 3 ) 3 Solution, weigh 15g Eu 2 o 3 Soluble in HNO 3 0.09569mol / L of Eu(NO 3 ) 3 solution;

[0026] b), weigh 4.8832g of HfOCl 2 After the powder was put into a beaker and dissolved in distilled water, 0.84ml of Gd(NO 3 ) 3 solution, in which Gd 3+ The molar content of Gd 3+ and Hf 4+ 8% of the total molar content, after stirring evenly, add 1.0ml of Eu(NO 3 ) 3 solution, measure the pH value of the solution, and adjust it to 1 with nitric acid;

[0027]c) Add 0.6820g of glycine and 0.7884g of urea mixed fuel to the above solution while stirring, vigorously stir to make it fully dissolved, heat at 200°C for 0.5h to remove moisture, and burn in a muffle furnace at 450°C for 1h obtain precursors;

[0028] d) Sinter the precursor in a high temperature furnace at 800°C for 2h to obtain HfO 2 -Gd 2 o 3 :Eu 3+ Solid solution transparent ceramic scintillation material.

Embodiment 2

[0030] a), weigh 10g Gd 2 o 3 Soluble in HNO 3 1.8955mol / L Gd(NO 3 ) 3 Solution, weigh 15g Eu 2 o 3 Soluble in HNO 3 0.09569mol / L of Eu(NO 3 ) 3 solution;

[0031] b), weigh 4.6178g of HfOCl 2 After the powder was put into a beaker and dissolved in distilled water, 1.4ml of Gd(NO 3 ) 3 solution, in which Gd 3+ The molar content of Gd 3+ and Hf 4+ 13% of the total molar content, after stirring evenly, add 1.0ml of Eu(NO 3 ) 3 solution, measure the pH value of the solution, and adjust it to 1 with nitric acid;

[0032] c) Add 0.6820g of glycine and 0.7884g of urea mixed fuel to the above solution while stirring, vigorously stir to make it fully dissolved, heat at 200°C for 0.5h to remove moisture, and burn in a muffle furnace at 450°C for 1h obtain precursors;

[0033] d) Sinter the precursor in a high temperature furnace at 800°C for 2h to obtain HfO 2 -Gd 2 o 3 :Eu 3+ Solid solution transparent ceramic scintillation material.

Embodiment 3

[0035] a), weigh 10g Gd 2 o 3 Soluble in HNO 3 1.8955mol / L Gd(NO 3 ) 3 Solution, weigh 15g Eu 2 o 3 Soluble in HNO 3 0.09569mol / L of Eu(NO 3 ) 3 solution;

[0036] b), weigh 4.0870g of HfOCl 2 After the powder was put into a beaker and dissolved in distilled water, 2.4ml of Gd(NO 3 ) 3 solution, in which Gd 3+ The molar content of Gd 3+ and Hf 4+ 23% of the total molar content, after stirring evenly, add 1.0ml of Eu(NO 3 ) 3 solution, measure the pH value of the solution, and adjust it to 1 with nitric acid;

[0037] c) Add 0.6820g of glycine and 0.7884g of urea mixed fuel to the above solution while stirring, vigorously stir to make it fully dissolved, heat at 200°C for 0.5h to remove moisture, and burn in a muffle furnace at 450°C for 1h obtain precursors;

[0038] d) Sinter the precursor in a high temperature furnace at 800°C for 2h to obtain HfO 2 -Gd 2 o 3 :Eu 3+ Solid solution transparent ceramic scintillation material.

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Abstract

The invention discloses a preparation method of a transparent ceramic glitter material. A general formula of the material is HfO2-Gd2O3:Eu<3+> and the material is prepared through the following steps:dissolving Gd2O3 in HNO3 to prepare Gd(NO3)3 solution of 1-2mol / L, and dissolving Eu2O3 in HNO3 to prepare Eu(NO3)3 solution of 0.08-0.1mol / L; placing HfOCI2 powder in a beaker and using distilled water for dissolution, adding the Gd(NO3)3 solution, stirring evenly, then adding the Eu(NO3)3 solution, and using nitric acid for adjusting the pH value of the solution to be 1-2; adding mixed fuel ofglycine and urea in the solution while stirring, heating for 20-30 minutes at temperature of 200 DEG C for removing water after stirring with strong force, burning for 40-70 minutes in a retortfurnaceof 450 DEG C, and stirring for 2 hours in a high temperature furnace at the temperature of 800 DEG C, then obtaining the material. The prepared material can be used for intensifying screens of X raysfor medical use or security inspection in high energy physics, and the preparation method has the characteristics of being safe, saving time and energy, and the like.

Description

technical field [0001] The invention relates to the preparation of inorganic materials, specifically a cubic phase inorganic transparent ceramic scintillation material used for making transparent ceramics, accurately measuring high-energy physical heat, and X-ray sensitization for medical use or security inspection by combustion method. Background technique [0002] Scintillation materials refer to materials that can absorb high-energy particles or rays and emit visible photons. Inorganic scintillation materials are widely used in the detection of ionizing radiation. Over the past few decades, scintillation materials have grown rapidly in the fields of high-energy physical calorimetry and medical imaging. Transparent ceramics are a very unique branch of many scintillation materials. Generally, ceramics are opaque, but optical ceramics are as transparent as glass, so they are called transparent ceramics. Generally, the reason why ceramics are opaque is that there are impur...

Claims

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Application Information

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IPC IPC(8): C04B35/622C04B35/48C04B35/50
Inventor 李强夏金峰孟婧丽丽
Owner EAST CHINA NORMAL UNIVERSITY
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