Influence of nitrogen pre-irradiation at different temperatures on surface blistering and deuterium retention in tungsten

被引：4

作者：

Qin, Shaoyang ^{[1
,2
]}

Wang, Jinliang ^{[1
]}

Cheng, Long ^{[1
,2
]}

Wang, Jun ^{[1
,2
]}

Yuan, Yue ^{[1
,2
]}

Lu, Guang-Hong ^{[1
,2
]}

机构：

[1] Beihang Univ, Sch Phys & Nucl Energy Engn, Beijing 100191, Peoples R China

[2] Beihang Univ, Beijing Key Lab Adv Nucl Mat & Phys, Beijing, Peoples R China

来源：

FUSION ENGINEERING AND DESIGN | 2018年 / 129卷

关键词：

Nitrogen; Tungsten; Surface blistering; Deuterium retention;

D O I：

10.1016/j.fusengdes.2018.02.002

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

Nitrogen seeding is considered to be used to reduce the power load onto tungsten divertor armors in tokamaks. Consequently, plasma-material interactions will be affected by seeded nitrogen impurities. The influence of nitrogen pre-irradiation on deuterium induced blistering and deuterium retention in rolled tungsten has been investigated at different pre-irradiation temperatures in the linear plasma device STEP with ion flux > 10(21) m(-2) s(-1). Commercially rolled W samples were sequentially exposed to nitrogen plasma (380 K and 470 K) and deuterium plasma (510 K). Surface observations show that nitrogen pre-irradiation suppresses deuterium-induced surface blistering. Thermal desorption spectroscopy measurements indicate that deuterium retention in the rolled tungsten is reduced due to nitrogen pre-irradiation, and it significantly changes with the pre-irradiation temperature. These phenomena are supposed to be related to the formation and change of WNxS at different temperatures which is validated by X-ray photoelectron spectroscopy analyses.

引用

页码：1 / 5

页数：5

共 24 条

[1] Reactive pulsed laser deposition of thin molybdenum- and tungsten-nitride films
Bereznai, M
Tóth, Z
Caricato, AP
Fernández, M
Luches, A
Majni, G
Mengucci, P
Nagy, PM
Juhász, A
Nánai, L
[J]. THIN SOLID FILMS, 2005, 473 (01) : 16 - 23
[2] Mitigated blistering and deuterium retention in tungsten exposed to high-flux deuterium-neon mixed plasmas
Cheng, L.
De Temmerman, G.
Morgan, T. W.
Schwarz-Selinger, T.
Yuan, Y.
Zhou, H. B.
Wang, B.
Zhang, Y.
Lu, G. H.
[J]. NUCLEAR FUSION, 2017, 57 (04)
[3] Effect of neon plasma pre-irradiation on surface morphology and deuterium retention of tungsten
Cheng, L.
De Temmerman, G.
van Emmichoven, P. A. Zeijlmans
Ji, G.
Zhou, H. B.
Wang, B.
Yuan, Y.
Zhang, Y.
Lu, G. H.
[J]. JOURNAL OF NUCLEAR MATERIALS, 2015, 463 : 1025 - 1028
[4] TUNGSTEN NITRIDE THIN-FILMS PREPARED BY MOCVD
CHIU, HT
CHUANG, SH
[J]. JOURNAL OF MATERIALS RESEARCH, 1993, 8 (06) : 1353 - 1360
[5] Eckstein Wolfgang., 2002, Calculated Sputtering, Reflection and Range Values, P1
[6] ADSORPTION AND DECOMPOSITION OF AMMONIA ON W(100) - XPS AND UPS STUDIES
EGAWA, C
NAITO, S
TAMARU, K
[J]. SURFACE SCIENCE, 1983, 131 (01) : 49 - 60
[7] Interaction of deuterium plasma with sputter-deposited tungsten nitride films
Gao, L.
Jacob, W.
Meisl, G.
Schwarz-Selinger, T.
Hoeschen, T.
von Toussaint, U.
Duerbeck, T.
[J]. NUCLEAR FUSION, 2016, 56 (01)
[8] Influence of nitrogen pre-implantation on deuterium retention in tungsten
Gao, L.
Jacob, W.
Wang, P.
von Toussaint, U.
Manhard, A.
[J]. PHYSICA SCRIPTA, 2014, T159
[9] Interface chemistry of WN/4H-SiC structures
Kakanakova-Georgieva, A
Kassamakova, L
Marinova, T
Kakanakov, R
Noblanc, O
Arnodo, C
Cassette, S
Brylinski, C
[J]. APPLIED SURFACE SCIENCE, 1999, 151 (3-4) : 225 - 232
[10] Plasma surface interactions in impurity seeded plasmas
Kallenbach, A.
Balden, M.
Dux, R.
Eich, T.
Giroud, C.
Huber, A.
Maddison, G. P.
Mayer, M.
McCormick, K.
Neu, R.
Petrie, T. W.
Puetterich, T.
Rapp, J.
Reinke, M. L.
Schmid, K.
Schweinzer, J.
Wolfe, S.
[J]. JOURNAL OF NUCLEAR MATERIALS, 2011, 415 (01) : S19 - S26

← 1 2 3 →