|国家科技期刊平台
| 注册
首页|期刊导航|人工晶体学报|压力辅助烧结Gd2O2S:Tb闪烁陶瓷的微结构及性能研究

压力辅助烧结Gd2O2S:Tb闪烁陶瓷的微结构及性能研究

WU Junlin HUANG Dong HU Chen LI Tingsong YANG Wenqin JIANG Xingfen ZHOU Jianrong SUN Zhijia LI Jiang

人工晶体学报2025，Vol.54Issue(12)：2119-2126,8.
✕
人工晶体学报2025，Vol.54Issue(12)：2119-2126,8.DOI:10.16553/j.cnki.issn1000-985x.2025.0134

压力辅助烧结Gd2O2S:Tb闪烁陶瓷的微结构及性能研究

Microstructure and Properties of Gd2O2S:Tb Scintillation Ceramics Fabricated by Pressure-Assisted Sintering

WU Junlin 1HUANG Dong 2HU Chen 1LI Tingsong 2YANG Wenqin 3JIANG Xingfen 3ZHOU Jianrong 3SUN Zhijia 3LI Jiang1

作者信息

  • 1. State Key Laboratory of High Performance Ceramics,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 201899,China||Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,China
  • 2. State Key Laboratory of High Performance Ceramics,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 201899,China
  • 3. Spallation Neutron Source Science Center,Dongguan 523803,China||Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China
  • 折叠

摘要

Abstract

Gd2O2S:Tb scintillation ceramics have the advantages of high X-ray stopping power,high light output and excellent spectral matching performance and low production cost,making them promising scintillators for security X-ray computed tomography.The Gd2O2S:Tb nano-powders were synthesized from Gd2O3 powders,Tb(NO3)3 and H2SO4 by the hot water-bath reduction method in this work.The pure-phase Gd2O2S:Tb ceramics were fabricated by hot pressing and hot isostatic pressing(HIP)post-treatment.The effects of hot-pressing temperature(975～1 100 ℃)and HIP post-treatment temperature(1 050～1 350 ℃)on the microstructure,optical transmittance and scintillation properties of Gd2O2S:Tb ceramics were systematically investigated.As the hot-pressing temperature increase from 975 ℃ to 1 100 ℃,the pores within the ceramics decrease and the relative densities increase from 91.4％to 98.9％.As the HIP temperature increase from 1 050 ℃to 1 350 ℃,the relative density of Gd2O2S:Tb ceramics gradually increase,with higher HIP temperatures promoting the removal of internal pores.Therefore,compared to HIP treatments at 1 050 and 1 200 ℃,the Gd2O2S:Tb ceramics treated at 1 350 ℃ exhibit higher total optical transmittance.The Gd2O2S:Tb ceramics hot pressed at 1 050 ℃ for 1.5 h under 60 MPa and HIP post-treated at 1 350 ℃ for 3 h under 176 MPa Ar atmosphere show the highest total optical transmittance of 20.3％at 545 nm(1 mm in thickness).It also shows the highest X-ray excited luminescence intensity due to the efficient extraction of scintillation light.

关键词

Gd2O2S:Tb闪烁陶瓷/热水浴法/热压烧结/热等静压烧结/微结构

Key words

Gd2O2S:Tb scintillation ceramics/hot water-bath method/hot pressing sintering/hot isostatic pressing sintering/microstructure

分类

化学化工

引用本文复制引用

WU Junlin,HUANG Dong,HU Chen,LI Tingsong,YANG Wenqin,JIANG Xingfen,ZHOU Jianrong,SUN Zhijia,LI Jiang..压力辅助烧结Gd2O2S:Tb闪烁陶瓷的微结构及性能研究[J].人工晶体学报,2025,54(12):2119-2126,8.

基金项目

新材料重大专项项目(2024ZD0605900) （2024ZD0605900）

国家自然科学基金(12175254) （12175254）

中国科学院国际合作局未来伙伴网络专项(030GJHZ2024026FN) （030GJHZ2024026FN）

广东省高精度射线探测技术重点实验室(2024B1212010005) （2024B1212010005）

人工晶体学报

OA北大核心

1000-985X

访问量0
|
下载量0
段落导航相关论文