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Preparation of UC ceramic nuclear fuel microspheres by combination of an improved microwave-assisted rapid internal gelation with carbothermic reduction process

文献类型：期刊论文

作者Tian, Wei1,2; Guo, Hangxu1,2; Chen, Desheng1; Pouchon, M. A.3; Horwege, Alina3; Yin, Xiaojie1; Huang, Qinggang1; Wang, Jieru1; Cao, Shiwei1; Chen, Denglei1
刊名CERAMICS INTERNATIONAL
出版日期2018-10-15
卷号44页码:17945-17952
关键词Ceramic uranium carbide microspheres Microwave-assisted rapid internal gelation Carbothermic reduction Sintering Nuclear fuel
ISSN号0272-8842
DOI10.1016/j.ceramint.2018.06.270
英文摘要Uranium carbide (UC) ceramic microspheres filled into a cladding are a potential nuclear fuel format for nuclear reactors. Uniform sized ceramic UC microspheres with a diameter of 675 +/- 10 mu m were successfully prepared by an improved microwave-assisted rapid internal gelation process combined with carbothermic reduction. First of all, the nanoparticle carbon was dispersed into the HMUR stock solution, and the C-UO3 center dot 2H(2)O gelled microspheres were prepared using an improved microwave-assisted internal gelation process without cooling the initial stock solutions. Next, the gelled microspheres were subjected to a carbothermic reduction process to obtain ceramic UC microspheres. TG and XRD investigations indicated that the C-UO3 center dot 2H(2)O microspheres were firstly reduced into UO2 at a temperature of 700 degrees C, and were further converted into UC at 1500 degrees C in argon atmosphere. Crack-free ceramic UC microspheres with a smooth and metallic shiny surface were obtained at a sintering temperature of 1500 degrees C for 5 h with an initial C/U molar ratio of 3.5.
WOS关键词URANIUM-CARBIDE ; CARBON-BLACK ; FABRICATION ; NANOPARTICLES ; SPHERES
资助项目Chinese National Nature Science Fund[91326203]
WOS研究方向Materials Science
语种英语
WOS记录号WOS:000445993000046
出版者ELSEVIER SCI LTD
源URL[http://119.78.100.186/handle/113462/64371]  
专题中国科学院近代物理研究所
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,Chen, Desheng,et al. Preparation of UC ceramic nuclear fuel microspheres by combination of an improved microwave-assisted rapid internal gelation with carbothermic reduction process[J]. CERAMICS INTERNATIONAL,2018,44:17945-17952.
APA Tian, Wei.,Guo, Hangxu.,Chen, Desheng.,Pouchon, M. A..,Horwege, Alina.,...&Qin, Zhi.(2018).Preparation of UC ceramic nuclear fuel microspheres by combination of an improved microwave-assisted rapid internal gelation with carbothermic reduction process.CERAMICS INTERNATIONAL,44,17945-17952.
MLA Tian, Wei,et al."Preparation of UC ceramic nuclear fuel microspheres by combination of an improved microwave-assisted rapid internal gelation with carbothermic reduction process".CERAMICS INTERNATIONAL 44(2018):17945-17952.

入库方式： OAI收割

来源：近代物理研究所

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