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

文献类型：期刊论文

作者Yuan, Yue5; Guo, Wangguo5; Wang, Peng3,4; Qu, Shilian2; Liu, Wei2; Luo, Guang-Nan1; Cheng, Long5; Lu, Guang-Hong5
刊名NUCLEAR FUSION
出版日期2019
卷号59期号:1页码:8
关键词tungsten lanthanum oxide melting microstructure deuterium retention
ISSN号0029-5515
DOI10.1088/1741-4326/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.
WOS关键词THERMAL-DESORPTION ; TOKAMAKS ; BEHAVIOR
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研究方向Physics
语种英语
WOS记录号WOS:000453288800002
出版者IOP PUBLISHING LTD
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
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.

入库方式： OAI收割

来源：合肥物质科学研究院

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