Climate Change Data Portal
DOI | 10.1111/jace.18273 |
Phase stability of pre-irradiated CeO2 with swift heavy ions under high pressure up to 45 GPa | |
Lan, Jianxiong; Zhai, Pengfei; Nan, Shuai; Xu, Lijun; Niu, Jingjing; Tian, Cheng; Li, Zongzhen; Li, Weixing; Liu, Jie; Ewing, Rodney Charles | |
通讯作者 | Zhai, PF (通讯作者) |
发表日期 | 2022 |
ISSN | 0002-7820 |
EISSN | 1551-2916 |
起始页码 | 2889 |
结束页码 | 2902 |
卷号 | 105期号:4 |
英文摘要 | The effect of defects on the high-pressure behavior of materials is fundamental to understanding and designing materials for extreme environments. Previous work has demonstrated that radiation damage can enhance phase stability or alter the transformation pathway. Here, we report the high-pressure phase stability of CeO2 irradiated by swift heavy ions. CeO2 is of particular interest because it can be used as a non-radioactive surrogate for UO2 and PuO2. High-pressure Raman spectroscopy shows that low-fluence ion irradiated CeO2 exhibits nearly the same high-pressure behavior as unirradiated CeO2; whereas, after high-fluence irradiation, the phase stability of CeO2 is significantly enhanced, with the critical phase transition pressure increased from 31.7 to 37.3 GPa and only about 7% high-pressure phase transition fraction at 45.1 GPa. In comparison with the high-pressure Raman results of pre-irradiated CeO2 before and after 573, 1073, and 1 273 K annealing in air, we propose that large interstitial-type defect clusters, such as dislocation loops formed in heavily-irradiated CeO2, are predominately responsible for the increased phase stability at high pressures. |
关键词 | X-RAY-DIFFRACTIONOPTICAL-PROPERTIESDISLOCATION LOOPSRAMAN-SCATTERINGGRAIN-SIZETRACKSTRANSFORMATIONDAMAGEACCUMULATIONBEHAVIOR |
英文关键词 | CeO2; dislocation loops; high pressure; high-temperature annealing; swift heavy ions |
语种 | 英语 |
WOS研究方向 | Materials Science |
WOS类目 | Materials Science, Ceramics |
WOS记录号 | WOS:000731328600001 |
来源期刊 | JOURNAL OF THE AMERICAN CERAMIC SOCIETY |
来源机构 | 中国科学院青藏高原研究所 |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/260646 |
推荐引用方式 GB/T 7714 | Lan, Jianxiong,Zhai, Pengfei,Nan, Shuai,et al. Phase stability of pre-irradiated CeO2 with swift heavy ions under high pressure up to 45 GPa[J]. 中国科学院青藏高原研究所,2022,105(4). |
APA | Lan, Jianxiong.,Zhai, Pengfei.,Nan, Shuai.,Xu, Lijun.,Niu, Jingjing.,...&Ewing, Rodney Charles.(2022).Phase stability of pre-irradiated CeO2 with swift heavy ions under high pressure up to 45 GPa.JOURNAL OF THE AMERICAN CERAMIC SOCIETY,105(4). |
MLA | Lan, Jianxiong,et al."Phase stability of pre-irradiated CeO2 with swift heavy ions under high pressure up to 45 GPa".JOURNAL OF THE AMERICAN CERAMIC SOCIETY 105.4(2022). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。