Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Tombarthite luminescent material, preparation method and application thereof

A rare earth luminescence and luminescence material technology, applied in the field of luminescence and detection, can solve the problems of long luminescence life and low luminescence efficiency, and achieve the effects of short fluorescence life, simple preparation method and high product density

Inactive Publication Date: 2013-05-01
SUN YAT SEN UNIV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the defects of low luminous efficiency and long luminous life of the existing luminescent materials used in X-ray intensifying screens, and provide a rare earth luminescent material with good matching degree with photosensitive sheet and short fluorescent life

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Tombarthite luminescent material, preparation method and application thereof
  • Tombarthite luminescent material, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Weigh lithium carbonate (Li 2 CO 3 ) 0.09 g, tungsten trioxide (WO 3 ) 1.16 g, lutetium trioxide (Lu 2 O 3 ) 0.49 g and tetraterbium heptaoxide (Tb 4 O 7 ) 0.01 g, grind well in an agate mortar, put it into a quartz crucible, heat it in an air bath in a high-temperature furnace to a constant temperature of 600°C for 2 hours, then raise it to a constant temperature of 1000°C for 8 hours, cool naturally and grind into a powder to obtain the final product .

Embodiment 2

[0025] Weigh sodium carbonate (Na 2 CO 3 ) 0.13 g, tungsten trioxide (WO 3 ) 1.16 g, lutetium trioxide (Lu 2 O 3 ) 0.48 g and tetraterbium heptaoxide (Tb 4 O 7 ) 0.01 g, grind well in an agate mortar, put it in a quartz crucible, heat it in an air bath in a high-temperature furnace to a constant temperature of 500°C for 4 hours, then raise it to a constant temperature of 1000°C for 4 hours, and grind it into a powder after natural cooling. .

Embodiment 3

[0027] Weigh potassium carbonate (K 2 CO 3 ) 0.17 g, tungsten trioxide (WO 3 ) 1.16 g, lutetium trioxide (Lu 2 O 3 ) 0.47 g and tetraterbium heptaoxide (Tb 4 O 7 ) 0.02 g, grind well in an agate mortar, put it into a quartz crucible and heat it in an air bath in a high-temperature furnace to a constant temperature of 500°C for 6 hours, then raise it to a constant temperature of 1000°C for 3 hours, and grind into a powder after natural cooling to obtain the final product .

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
densityaaaaaaaaaa
Login to View More

Abstract

The invention relates to the technical field of luminousness and detection, particularly relates to a tombarthite luminescent material, a preparation method and an application thereof. The invention provides the tombarthite luminescent material, which is a tungstic acid double salt containing lutecium activated by a Tb <3+> which is a tombarthite terbium ion, and has a chemical constitution expression as follows: M Lu <1-x> Tb<x> (WO4)2, wherein M refers to an alkali metal ion of Li <+>, Na <+> and K <+>, Lu <3+> is a tombarthite lutecium ion, Tb <3+> is a tombarthite terbium ion and is a centre of luminescence, x refers to the amount that activating the central Tb<3+> ion and replacing the Lu <3+> ion of a matrix, and x is not less than 0.01 and not larger than 0.10. Under the stimulation of x-ray, the tombarthite luminescent material has properties of strong green light emission and rapid fluorescent attenuation, and is applicable to an intensifying screen of x-ray.

Description

Technical field [0001] The present invention relates to the field of luminescence and detection technology, and more specifically, to a rare earth luminescent material and a preparation method and application thereof. Background technique [0002] The detection material for X-ray intensifying screen is a material that can absorb X-rays and convert them into visible light to image photosensitive materials. It is designed to improve detection sensitivity, shorten radiation time and exposure time, and is mainly used for X-ray perspective in medical images. , Safety inspection and industrial non-destructive testing. [0003] This detection material requires high X-ray absorption efficiency and luminous efficiency, the emission spectrum is matched with the photosensitive material, and the afterglow time of the light is short. The X-ray absorption coefficient of materials increases with the increase of atomic number and material density. Therefore, materials composed of heavy elements w...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/78G21K4/00
Inventor 钟玖平王子俊王静梁宏斌苏锵
Owner SUN YAT SEN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com