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Fabrication of CeO2 ceramic spheres as a surrogate of nuclear fuel by an improved microwave-assisted rapid internal gelation process

文献类型：期刊论文

作者Tian, Wei1,2; Guo, Hangxu1,2; Yin, Xiaojie1; Chen, Denglei1; Qin, Zhi1; Pouchon, M. A.3
刊名CERAMICS INTERNATIONAL
出版日期2018-04-15
卷号44页码:6739-6746
关键词Ceramic CeO2 spheres In-situ instant mixing Microwave-assisted rapid internal gelation Nuclear fuel
ISSN号0272-8842
DOI10.1016/j.ceramint.2018.01.090
英文摘要CeO2 is a surrogate of PuO2 in nuclear fuel development. Uniform sized ceramic CeO2 spheres were fabricated by an improved internal gelation process which combined the in-situ instant mixing of room-temperature precursor solutions with microwave-assisted internal gelation. Chemical kinetics investigations showed that the gelation process sped up as the[HMTA]/[Ce4+] ratio, [OH-]/[Ce4+] ratio and temperature increased. However, to avoid cracking during the sintering process, the [HMTA]/[Ce4+] ratio should be limited at low value while [OH-]/ [Ce4+] ratio should be sufficiently high. Besides, pressured water treatment was adopted to wipe off impurities in the gelled spheres before sintering. The microstructure and morphology of the prepared ceramic CeO2 spheres were also investigated. The improved microwave-assisted internal gelation process greatly simplifies the conventional sol-gel process and avoids secondary organic radioactive waste. It will be a potential method for the fabrication of MAs and Pu-containing ceramic nuclear fuel spheres in glove-box in future.
WOS关键词GEL MICROSPHERE PELLETIZATION ; ZIRCONIA MICROSPHERES ; CERIA ; DROPLETS ; URANIUM ; PELLETS ; POWDER ; YTTRIA
资助项目CAS Strategic Priority Research Program[XDA03010402] ; Chinese National Nature Science Fund[91326203] ; nuclear chemistry laboratory of IMP ; material center of IMP
WOS研究方向Materials Science
语种英语
WOS记录号WOS:000427215100124
出版者ELSEVIER SCI LTD
资助机构CAS Strategic Priority Research Program ; Chinese National Nature Science Fund ; nuclear chemistry laboratory of IMP ; material center of IMP
源URL[http://119.78.100.186/handle/113462/47458]  
专题近代物理研究所_实验物理中心
通讯作者Qin, Zhi
作者单位1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Paul Scherrer Inst, CH-5232 Villigen, Switzerland
推荐引用方式
GB/T 7714		 Tian, Wei,Guo, Hangxu,Yin, Xiaojie,et al. Fabrication of CeO2 ceramic spheres as a surrogate of nuclear fuel by an improved microwave-assisted rapid internal gelation process[J]. CERAMICS INTERNATIONAL,2018,44:6739-6746.
APA Tian, Wei,Guo, Hangxu,Yin, Xiaojie,Chen, Denglei,Qin, Zhi,&Pouchon, M. A..(2018).Fabrication of CeO2 ceramic spheres as a surrogate of nuclear fuel by an improved microwave-assisted rapid internal gelation process.CERAMICS INTERNATIONAL,44,6739-6746.
MLA Tian, Wei,et al."Fabrication of CeO2 ceramic spheres as a surrogate of nuclear fuel by an improved microwave-assisted rapid internal gelation process".CERAMICS INTERNATIONAL 44(2018):6739-6746.

入库方式： OAI收割

来源：近代物理研究所

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