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Deuterium retention and release behaviours of tungsten and deuterium co-deposited layers
Department固体润滑国家重点实验室
Qiao L(乔丽)1,2; Zhang, H. W.3; Xu J(许佼)1; Chai LQ(柴利强)1; Hu, M.1; Wang P(王鹏)1; Wang P(王鹏)
2018
Source PublicationJournal of Nuclear Materials
ISSN0022-3115
Issue502Pages:247-254
Abstract

Tungsten (W) layer deposited in argon and deuterium atmosphere by magnetron sputtering was used as a model system to study the deuterium (D) retention and release behavior in co-deposited W layer. After deposition several selected samples were exposed in deuterium plasma at 370 K with a flux of 4.0 × 1021 D/(m2 s) up to a fluence of 1.1 × 1025 D/m2. Structures of co-deposited W layers are investigated by field-emission scanning electron microscopy (FESEM) and X-ray diffraction (XRD), and the corresponding D retention and release behaviors are studied as functions of deposition and exposure parameters using thermal desorption spectroscopy (TDS). Two main D release peaks were detected from TDS spectra located near 600 and 800 K in these W and D co-deposited layers, and total deuterium retention increased linearly as a function of W layer's thickness. After deuterium plasma exposure, the total D retention amount in W layer increases significantly and D release peak shifts to lower temperature. Clearly, despite the high density of defects expected in co-deposited W layers, the initial deuterium retention before exposure to the deuterium plasma is low even for the samples with a W&D layer. But due to the high densities of defects, during the deuterium plasma exposure the deuterium retention increases faster for co-deposited layer than for the bulk W sample.

KeywordDeuterium Retention Deuterium Release Tungsten Co-deposited Layers Magnetron Sputtering
Subject Area材料科学与物理化学
DOI10.1016/j.jnucmat.2018.02.009
Funding Organizationthe National Natural Science Foundation of China with the Grant No. 11475236
Indexed BySCI
If2.447
Language英语
Funding Project辐射环境下润滑与防护材料组
compositor第一作者单位
Citation statistics
Cited Times:26[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.licp.cn/handle/362003/23689
Collection固体润滑国家重点实验室(LSL)
Corresponding AuthorWang P(王鹏)
Affiliation1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Gansu, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100080, Peoples R China
3.Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Gansu, Peoples R China
Recommended Citation
GB/T 7714
Qiao L,Zhang, H. W.,Xu J,et al. Deuterium retention and release behaviours of tungsten and deuterium co-deposited layers[J]. Journal of Nuclear Materials,2018(502):247-254.
APA Qiao L.,Zhang, H. W..,Xu J.,Chai LQ.,Hu, M..,...&Wang P.(2018).Deuterium retention and release behaviours of tungsten and deuterium co-deposited layers.Journal of Nuclear Materials(502),247-254.
MLA Qiao L,et al."Deuterium retention and release behaviours of tungsten and deuterium co-deposited layers".Journal of Nuclear Materials .502(2018):247-254.
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