Influence of surface melting on the deuterium retention in pure and lanthanum oxide doped tungsten

doi:10.1088/1741-4326/aaf1f7

CORC > 合肥物质科学研究院 > 中国科学院合肥物质科学研究院 > 中科院等离子体物理研究所

	Influence of surface melting on the deuterium retention in pure and lanthanum oxide doped tungsten
	Yuan, Yue 5; Guo, Wangguo 5; Wang, Peng3,4 ; Qu, Shilian 2; Liu, Wei 2; Luo, Guang-Nan 1; Cheng, Long 5; Lu, Guang-Hong 5
刊名	NUCLEAR FUSION
	2019
卷号	59 期号:1 页码:8
关键词	tungsten lanthanum oxide melting microstructure deuterium retention
ISSN号	0029-5515
DOI	10.1088/1741-4326/aaf1f7
通讯作者	Yuan, Yue(yueyuan@buaa.edu.cn) ; Wang, Peng(pengwang@licp.cas.cn)
英文摘要	The issue of material melting under transient heat fluxes is one of the key concerns associated with the use of tungsten (W) divertor targets in ITER as the next step fusion device. This study aims to closely examine the impact of surface melting on fuel retention with respect to the performance in subsequent operations. Besides pure W, W - 1 wt. % La2O3 (WL10), which is considered as an advanced plasma facing material, is tested as a comparative study. The two tungsten grades are successively exposed to high heat flux loads and low-energy deuterium (D) plasma. The thermal desorption spectroscopy (TDS) measurements indicate that D retention reduces by similar to 40% after shallow surface melting for both of the two W grades. On the other hand, D retention in the WL10 is almost double that in the pure W regardless of whether surface melting occurs or not. The TDS spectra exhibit two main desorption peaks at around 550 K and 700 K, which largely corresponds to grain boundaries and voids respectively. However, an additional peak appears unexpectedly around 1070 K for the melted WL10. We attribute this additional high-temperature peak to the formation of the hydrogen absorbing metal La in the resolidified layer, which is confirmed by transmission electron microscopy and energy dispersive x-ray spectrometry results.
资助项目	National Nature Science Foundation of China[11775015] ; Science and Technology on Surface Physics and Chemistry Laboratory[02020317] ; Young Elite Scientists Sponsorship Program from CAST[2017QNRC001] ; Users with Excellence Project of Hefei Science Center of CAS[2018HSC-UE006]
WOS关键词	THERMAL-DESORPTION ; TOKAMAKS ; BEHAVIOR
WOS研究方向	Physics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000453288800002
资助机构	National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; Science and Technology on Surface Physics and Chemistry Laboratory ; Science and Technology on Surface Physics and Chemistry Laboratory ; Science and Technology on Surface Physics and Chemistry Laboratory ; Science and Technology on Surface Physics and Chemistry Laboratory ; Science and Technology on Surface Physics and Chemistry Laboratory ; Science and Technology on Surface Physics and Chemistry Laboratory ; Science and Technology on Surface Physics and Chemistry Laboratory ; Science and Technology on Surface Physics and Chemistry Laboratory ; Young Elite Scientists Sponsorship Program from CAST ; Young Elite Scientists Sponsorship Program from CAST ; Young Elite Scientists Sponsorship Program from CAST ; Young Elite Scientists Sponsorship Program from CAST ; Young Elite Scientists Sponsorship Program from CAST ; Young Elite Scientists Sponsorship Program from CAST ; Young Elite Scientists Sponsorship Program from CAST ; Young Elite Scientists Sponsorship Program from CAST ; Users with Excellence Project of Hefei Science Center of CAS ; Users with Excellence Project of Hefei Science Center of CAS ; Users with Excellence Project of Hefei Science Center of CAS ; Users with Excellence Project of Hefei Science Center of CAS ; Users with Excellence Project of Hefei Science Center of CAS ; Users with Excellence Project of Hefei Science Center of CAS ; Users with Excellence Project of Hefei Science Center of CAS ; Users with Excellence Project of Hefei Science Center of CAS ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; Science and Technology on Surface Physics and Chemistry Laboratory ; Science and Technology on Surface Physics and Chemistry Laboratory ; Science and Technology on Surface Physics and Chemistry Laboratory ; Science and Technology on Surface Physics and Chemistry Laboratory ; Science and Technology on Surface Physics and Chemistry Laboratory ; Science and Technology on Surface Physics and Chemistry Laboratory ; Science and Technology on Surface Physics and Chemistry Laboratory ; Science and Technology on Surface Physics and Chemistry Laboratory ; Young Elite Scientists Sponsorship Program from CAST ; Young Elite Scientists Sponsorship Program from CAST ; Young Elite Scientists Sponsorship Program from CAST ; Young Elite Scientists Sponsorship Program from CAST ; Young Elite Scientists Sponsorship Program from CAST ; Young Elite Scientists Sponsorship Program from CAST ; Young Elite Scientists Sponsorship Program from CAST ; Young Elite Scientists Sponsorship Program from CAST ; Users with Excellence Project of Hefei Science Center of CAS ; Users with Excellence Project of Hefei Science Center of CAS ; Users with Excellence Project of Hefei Science Center of CAS ; Users with Excellence Project of Hefei Science Center of CAS ; Users with Excellence Project of Hefei Science Center of CAS ; Users with Excellence Project of Hefei Science Center of CAS ; Users with Excellence Project of Hefei Science Center of CAS ; Users with Excellence Project of Hefei Science Center of CAS ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; Science and Technology on Surface Physics and Chemistry Laboratory ; Science and Technology on Surface Physics and Chemistry Laboratory ; Science and Technology on Surface Physics and Chemistry Laboratory ; Science and Technology on Surface Physics and Chemistry Laboratory ; Science and Technology on Surface Physics and Chemistry Laboratory ; Science and Technology on Surface Physics and Chemistry Laboratory ; Science and Technology on Surface Physics and Chemistry Laboratory ; Science and Technology on Surface Physics and Chemistry Laboratory ; Young Elite Scientists Sponsorship Program from CAST ; Young Elite Scientists Sponsorship Program from CAST ; Young Elite Scientists Sponsorship Program from CAST ; Young Elite Scientists Sponsorship Program from CAST ; Young Elite Scientists Sponsorship Program from CAST ; Young Elite Scientists Sponsorship Program from CAST ; Young Elite Scientists Sponsorship Program from CAST ; Young Elite Scientists Sponsorship Program from CAST ; Users with Excellence Project of Hefei Science Center of CAS ; Users with Excellence Project of Hefei Science Center of CAS ; Users with Excellence Project of Hefei Science Center of CAS ; Users with Excellence Project of Hefei Science Center of CAS ; Users with Excellence Project of Hefei Science Center of CAS ; Users with Excellence Project of Hefei Science Center of CAS ; Users with Excellence Project of Hefei Science Center of CAS ; Users with Excellence Project of Hefei Science Center of CAS ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; Science and Technology on Surface Physics and Chemistry Laboratory ; Science and Technology on Surface Physics and Chemistry Laboratory ; Science and Technology on Surface Physics and Chemistry Laboratory ; Science and Technology on Surface Physics and Chemistry Laboratory ; Science and Technology on Surface Physics and Chemistry Laboratory ; Science and Technology on Surface Physics and Chemistry Laboratory ; Science and Technology on Surface Physics and Chemistry Laboratory ; Science and Technology on Surface Physics and Chemistry Laboratory ; Young Elite Scientists Sponsorship Program from CAST ; Young Elite Scientists Sponsorship Program from CAST ; Young Elite Scientists Sponsorship Program from CAST ; Young Elite Scientists Sponsorship Program from CAST ; Young Elite Scientists Sponsorship Program from CAST ; Young Elite Scientists Sponsorship Program from CAST ; Young Elite Scientists Sponsorship Program from CAST ; Young Elite Scientists Sponsorship Program from CAST ; Users with Excellence Project of Hefei Science Center of CAS ; Users with Excellence Project of Hefei Science Center of CAS ; Users with Excellence Project of Hefei Science Center of CAS ; Users with Excellence Project of Hefei Science Center of CAS ; Users with Excellence Project of Hefei Science Center of CAS ; Users with Excellence Project of Hefei Science Center of CAS ; Users with Excellence Project of Hefei Science Center of CAS ; Users with Excellence Project of Hefei Science Center of CAS
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/40689]
专题	合肥物质科学研究院_中科院等离子体物理研究所
通讯作者	Yuan, Yue; Wang, Peng
作者单位	1.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Anhui, Peoples R China 2.Tsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China 3.Max Planck Inst Plasma Phys, Boltzmannstr 2, D-85748 Garching, Germany 4.Chinese Acad Sci, Lanzhou Inst Chem Phys, Lanzhou 730000, Gansu, Peoples R China 5.Beihang Univ, Sch Phys & Nucl Energy Engn, Beijing 100191, Peoples R China
推荐引用方式 GB/T 7714	Yuan, Yue,Guo, Wangguo,Wang, Peng,et al. Influence of surface melting on the deuterium retention in pure and lanthanum oxide doped tungsten[J]. NUCLEAR FUSION,2019,59(1):8.
APA	Yuan, Yue.,Guo, Wangguo.,Wang, Peng.,Qu, Shilian.,Liu, Wei.,...&Lu, Guang-Hong.(2019).Influence of surface melting on the deuterium retention in pure and lanthanum oxide doped tungsten.NUCLEAR FUSION,59(1),8.
MLA	Yuan, Yue,et al."Influence of surface melting on the deuterium retention in pure and lanthanum oxide doped tungsten".NUCLEAR FUSION 59.1(2019):8.