Boro/carbothermal reduction synthesis of uranium tetraboride and its oxidation behavior in dry air

doi:10.1111/jace.15987

	Boro/carbothermal reduction synthesis of uranium tetraboride and its oxidation behavior in dry air
	Guo, Hangxu 1,2; Wang, Jieru 1; Chen, Denglei 1; Tian, Wei1,2 ; Cao, Shiwei 1; Chen, Desheng 1; Tan, Cunmin 1; Deng, Qihuang 3; Qin, Zhi1
刊名	JOURNAL OF THE AMERICAN CERAMIC SOCIETY
	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.
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关键词	POWDERS SYNTHESIS ; ZRB2 ; ZRO2 ; CERAMICS ; DIBORIDE
WOS研究方向	Materials Science
语种	英语
出版者	WILEY
WOS记录号	WOS:000459610500026
资助机构	CAS Strategic Priority Research Program ; National Natural Science Foundation of China
内容类型	期刊论文
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.