A kind of cerium-doped lutetium-scandium disilicate scintillation ceramics and preparation method thereof

Abstract

The invention relates to the technical field of optical ceramics, in particular to a cerium-doped lutetium-scandium disilicate scintillation ceramic and a preparation method thereof. A kind of cerium-doped lutetium disilicate scandium scintillation ceramics of the present invention adopts the general composition formula of the cerium-doped lutetium disilicate scintillation ceramics described in the following technical scheme as (Lu 1‑x‑y Ce x sc y ) 2 Si 2 o 7 , where x=0.001‑0.06, y=0.1‑0.2, which solves the shortcomings of scintillation ceramics that are easy to introduce impurities, ceramic particles are easy to agglomerate, and easy to cause product dispersion and poor uniformity. It has good transparency and stability. , and has high strength, good insulation, and has the advantages of high purity, strong uniformity, strong scintillation performance and high temperature resistance. It can be used in the technical fields of special fiber machinery industry CT, clothing fiber measurement and so on.

Description

technical field [0001] The invention relates to the technical field of optical ceramics, in particular to a cerium-doped lutetium-scandium disilicate scintillation ceramic and a preparation method thereof. Background technique [0002] Ceramic scintillation materials have high density, high light output, high light yield, and short decay time. They are suitable for medical imaging, space physics, high-energy physics, industrial flaw detection, geological exploration and other fields, and are used in mechanical industry CT of special fibers, clothing fiber measurement, etc. The technical field plays an important role. [0003] Although the light output is not as good as crystal scintillation materials, ceramic scintillation materials generally have good transparency and stability, high strength, good insulation, and can withstand high temperature and corrosion. The production time of ceramic scintillation materials is short, and the requirements for equipment are not high an...

AI Technical Summary

Problems solved by technology

[0004] The invention patent with the application number CN201210249353.6 discloses the hot pressing and sintering preparation method of cerium fluoride scintillating ceramics and the prepared cerium fluoride scintillation ceramics. 3 The powder is pre-pressed, and the high-purity CeF 3 The purity of the powder is more than 99%; heating process: after removing the pre-compression pressure, vacuumize to make the vacuum degree -3 Pa, then raise the temperature to 800~1000°C; and the hot pressing sintering process: keep at 800~1000°C, pressurize to 100~300MPa, keep the temperature and pressure for 0.5~2.5h, the ceramic has high visible light transmittance, crystal It has the advantages of small particle size, high density, and low oxidation degree, but due to the disadvantages of easy introduction of impurities, easy aggregation of ceramic particles, and poor product dispersion and poor uniformity, the present invention provides a high-purity, Blinking ceramics with strong uniformity and strong scintillation performance