Boro/carbothermal reduction synthesis of uranium tetraboride and its oxidation behavior in dry air
文献类型：期刊论文
| 作者 | Guo, Hangxu1,2; Wang, Jieru1; Chen, Denglei1; Tian, Wei1,2 ; Cao, Shiwei1; Chen, Desheng1; Tan, Cunmin1; Deng, Qihuang3; Qin, Zhi1
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| 刊名 | JOURNAL OF THE AMERICAN CERAMIC SOCIETY
 |
| 出版日期 | 2019-03-01 |
| 卷号 | 102页码:1049-1056 |
| 关键词 | boro carbothermal reduction oxidation synthesis uranium tetraboride |
| ISSN号 | 0002-7820 |
| DOI | 10.1111/jace.15987 |
| 英文摘要 | Uranium tetraboride (UB4) was successfully synthesized by boro/carbothermal reduction of UO2 with B4C and carbon as combined reduction agents under flowing argon. The effects of processing temperature and mole ratios of starting materials on phase evolution were studied. XRD results demonstrated that UB4 was obtained with 3.75 mol% B4C in excess based on the UO2/B4C/C molar ratios of 1:1:1 at 1500 degrees C. SEM observation revealed that submicrometer-sized quasi-spherical UB4 particles cemented together to be an aggregate. The laser particle size analysis showed that the particle size was in the range of 1-10 m. The oxidation behavior of UB4 was also investigated by TG and XRD. The oxidation of UB4 started at about 500 degrees C and it showed better oxidation resistance than other basic uranium nuclear fuels (UO2, UC, UN and U3Si2). The oxidation chemical process of UB4 was presented as a three-step process: (a) the formation of U3O8 and B2O3 oxidation products; (b) the formation of UB2O6 intermediate product by the interaction of U3O8 and B2O3; (c) the decomposition of UB2O6 to get U3O8. |
| WOS关键词 | POWDERS SYNTHESIS ; ZRB2 ; ZRO2 ; CERAMICS ; DIBORIDE |
| 资助项目 | CAS Strategic Priority Research Program[XDA03010402] ; National Natural Science Foundation of China[91326203] ; National Natural Science Foundation of China[11675227] |
| WOS研究方向 | Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000459610500026 |
| 出版者 | WILEY |
| 资助机构 | CAS Strategic Priority Research Program ; National Natural Science Foundation of China |
| 源URL | [http://119.78.100.186/handle/113462/64961]  |
| 专题 | 中国科学院近代物理研究所 |
| 作者单位 | 1.Chinese Acad Sci, Inst Modern Phys, Lab Transmutat Chem, Lanzhou, Gansu, Peoples R China 2.Univ Chinese Acad Sci, Sch Phys Sci & Technol, Beijing, Peoples R China 3.Yangtze Normal Univ, Coll Mech & Elect Engn, Chongqing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Guo, Hangxu,Wang, Jieru,Chen, Denglei,et al. Boro/carbothermal reduction synthesis of uranium tetraboride and its oxidation behavior in dry air[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY,2019,102:1049-1056. |
| APA | Guo, Hangxu.,Wang, Jieru.,Chen, Denglei.,Tian, Wei.,Cao, Shiwei.,...&Qin, Zhi.(2019).Boro/carbothermal reduction synthesis of uranium tetraboride and its oxidation behavior in dry air.JOURNAL OF THE AMERICAN CERAMIC SOCIETY,102,1049-1056. |
| MLA | Guo, Hangxu,et al."Boro/carbothermal reduction synthesis of uranium tetraboride and its oxidation behavior in dry air".JOURNAL OF THE AMERICAN CERAMIC SOCIETY 102(2019):1049-1056. |
入库方式： OAI收割
来源：近代物理研究所
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