期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 688, 期 -, 页码 679-684出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2016.07.188
关键词
Cerium-doping; Barium tantalates; gamma-ray attenuation; Hydrothermal reaction
资金
- Open Research Funds of State Key Laboratory Cultivation Base of Nonmetal Composites and Functional Materials [11zxfk05, 13zxfk07]
- Platform Fund of State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials [14tdfk04]
- Research Fund of Southwest University of Science and Technology [15zx7159]
Cerium-doped Ba5Ta4O15 crystals used to enhance the gamma-ray attenuation performance were fabricated via a hydrothermal process. The contents of doped cerium were adjusted from 4 mol% to 16 mol%. The obtained products were characterized by XRD, SEM, TEM, HRTEM, and XPS. It proved that cerium ions were successfully introduced to the crystal lattice of Ba5Ta4O15, and partially replaced the barium ions sites. The Ba5Ta4O15/EPDM composites prepared by mixing the obtained inorganic powders and the polymer matrix were tested in the gamma-ray attenuation. The results showed that 16 mol% cerium doping gave the Ba5Ta4O15/EPDM composite a lead of 38.66% in the gamma-ray (Am-241 source, 59.5 keV) shielding capacity compared to its un-doped competitor. The enhancement of gamma-ray attenuation performance of cerium doped Ba5Ta4O15 was ascribed to expand the K-edge absorbing area of tantalum. (C) 2016 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据