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Rapid solidification synthesis of novel (La,Y)(2)(Zr,Ti)(2)O-7 pyrochlore-based glass-ceramics for the immobilization of high-level wastes

文献类型：期刊论文

作者Guo, Yongchang1,2; Zhang, Ying1,2; Allix, Mathieu4; Feng, Shaowei1,2; Sun, Hong1,2; Genevois, Cecile4; Veron, Emmanuel4; Li, Jianqiang1,2,3
刊名JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
出版日期2021-11-01
卷号41期号:14页码:7253-7260
ISSN号0955-2219
关键词Melt solidification Pyrochlore glass-ceramics Actinide immobilization High-level wastes Metastable crystalline phase
DOI10.1016/j.jeurceramsoc.2021.07.051
英文摘要Pyrochlore-based glass-ceramics are attracting attention as a promising host material for immobilizing minor actinide in high-level wastes. However, the loading capacity of pymchlore-based materials for actinide elements is to be improved, and only conventional synthetic approaches of powder sintering and glassy bulk crystallization were reported. Here, new (La,Y)(2)(Zr,Ti)(2)O-7 pyrochlore-based glass-ceramics were subtly designed and successfully prepared through a rapid melting and solidification process. The solidification behavior of samples with different cooling rates was investigated, the dense and crack-free (La,Y)(2)(Zr,Ti)(2)O-7 pyrochlore-based glass-ceramics were prepared at the cooling rate of 500 degrees C/s (within 1.5 s). The present amorphous La2O3-TiO2-Al2O3 phase demonstrates the outstanding thermal stability compared with the currently used borosilicate glass for high-level waste immobilization due to the lack of conventional glass-forming components. The results show the great feasibility of this novel synthesis route for glass-ceramics by direct solidification and its good potential for immobilizing high-level wastes.
WOS关键词SIO2-AL2O3-CAO-ZRO2-TIO2 GLASSES ; SPECTROSCOPIC INVESTIGATIONS ; RADIOACTIVE-WASTE ; MATRIX COMPOSITES ; LANTHANIDES CE ; ACTINIDES TH ; HOST MATRIX ; FORMS ; CRYSTALLIZATION ; PHASES
资助项目National Key Research and Development Program of China[2017YFC0703205] ; National Natural Science Foundation of China[51972304] ; National Natural Science Foundation of China[51971208] ; Project of Scientific Experiment on Chinese Manned Space Station, Chinese Academy of Sciences President's International Fellowship Initiative[2021VEA0012] ; Innovation Academy for Green Manufacture, Chinese Academy of Sciences[IAGM2020C25] ; European Union
WOS研究方向Materials Science
语种英语
出版者ELSEVIER SCI LTD
WOS记录号WOS:000691179600004
资助机构National Key Research and Development Program of China ; National Natural Science Foundation of China ; Project of Scientific Experiment on Chinese Manned Space Station, Chinese Academy of Sciences President's International Fellowship Initiative ; Innovation Academy for Green Manufacture, Chinese Academy of Sciences ; European Union
源URL[http://ir.ipe.ac.cn/handle/122111/50044]  
专题中国科学院过程工程研究所
通讯作者Allix, Mathieu; Li, Jianqiang
作者单位1.Chinese Acad Sci, CAS Key Lab Green Proc & Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Inst Proc Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Innovat Acad Green Manufacture, Beijing 100190, Peoples R China
4.Univ Orleans, CNRS, CEMHTI UPR 3079, F-45071 Orleans, France
推荐引用方式
GB/T 7714		 Guo, Yongchang,Zhang, Ying,Allix, Mathieu,et al. Rapid solidification synthesis of novel (La,Y)(2)(Zr,Ti)(2)O-7 pyrochlore-based glass-ceramics for the immobilization of high-level wastes[J]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,2021,41(14):7253-7260.
APA Guo, Yongchang.,Zhang, Ying.,Allix, Mathieu.,Feng, Shaowei.,Sun, Hong.,...&Li, Jianqiang.(2021).Rapid solidification synthesis of novel (La,Y)(2)(Zr,Ti)(2)O-7 pyrochlore-based glass-ceramics for the immobilization of high-level wastes.JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,41(14),7253-7260.
MLA Guo, Yongchang,et al."Rapid solidification synthesis of novel (La,Y)(2)(Zr,Ti)(2)O-7 pyrochlore-based glass-ceramics for the immobilization of high-level wastes".JOURNAL OF THE EUROPEAN CERAMIC SOCIETY 41.14(2021):7253-7260.

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来源：过程工程研究所

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