High heat flux test of actively cooled tungsten-coated carbon divertor mock-ups

K. Tokunaga; N. Yoshida; Y. Kubota; N. Noda; Y. Imamura; T. Oku; A. Kurumada; T. Sogabe; T. Kato; L. Plöchl

doi:10.1016/S0920-3796(00)00399-9

High heat flux test of actively cooled tungsten-coated carbon divertor mock-ups

K. Tokunaga, N. Yoshida, Y. Kubota, N. Noda, Y. Imamura, T. Oku, A. Kurumada, T. Sogabe, T. Kato, L. Plöchl

Division of Nuclear Fusion Dynamics

Research output: Contribution to journal › Conference article › peer-review

18 Citations (Scopus)

Abstract

CX-2002U and IG-43OU coated by VPS-W were developed to be as a light high-Z plasma-facing material. After brazing them on OFHC blocks using a Ti foil, their thermal response and thermal fatigue properties were examined with active cooling. No cracks and no exfoliation occurred on the W surface and the braze interface even after 160 cycles of heat load for 20 s at 10 MW/m². This result indicates that the Ti-brazing is a possible alternative to Ag-brazing for joining carbon to Cu. Heat load resistance of the VPS-W coated CX-2002U/OFHC was much better than the VPS-W coated IG-430U/OFHC due to the excellent thermal conductivity of CX-2002U. VPS-W coated CFC/OFHC is a potential candidate for a high heat resistance armor material on plasma facing components.

Original language	English
Pages (from-to)	371-376
Number of pages	6
Journal	Fusion Engineering and Design
Volume	49-50
DOIs	https://doi.org/10.1016/S0920-3796(00)00399-9
Publication status	Published - Nov 2000
Event	5th International Symposium on Fusion Nuclear Technology - Rome, Italy Duration: Sept 19 2000 → Sept 24 2000

All Science Journal Classification (ASJC) codes

Civil and Structural Engineering
Nuclear Energy and Engineering
Materials Science(all)
Mechanical Engineering

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10.1016/S0920-3796(00)00399-9

Cite this

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title = "High heat flux test of actively cooled tungsten-coated carbon divertor mock-ups",

abstract = "CX-2002U and IG-43OU coated by VPS-W were developed to be as a light high-Z plasma-facing material. After brazing them on OFHC blocks using a Ti foil, their thermal response and thermal fatigue properties were examined with active cooling. No cracks and no exfoliation occurred on the W surface and the braze interface even after 160 cycles of heat load for 20 s at 10 MW/m2. This result indicates that the Ti-brazing is a possible alternative to Ag-brazing for joining carbon to Cu. Heat load resistance of the VPS-W coated CX-2002U/OFHC was much better than the VPS-W coated IG-430U/OFHC due to the excellent thermal conductivity of CX-2002U. VPS-W coated CFC/OFHC is a potential candidate for a high heat resistance armor material on plasma facing components.",

author = "K. Tokunaga and N. Yoshida and Y. Kubota and N. Noda and Y. Imamura and T. Oku and A. Kurumada and T. Sogabe and T. Kato and L. Pl{\"o}chl",

year = "2000",

month = nov,

doi = "10.1016/S0920-3796(00)00399-9",

language = "English",

volume = "49-50",

pages = "371--376",

journal = "Fusion Engineering and Design",

issn = "0920-3796",

publisher = "Elsevier BV",

note = "5th International Symposium on Fusion Nuclear Technology ; Conference date: 19-09-2000 Through 24-09-2000",

}

TY - JOUR

T1 - High heat flux test of actively cooled tungsten-coated carbon divertor mock-ups

AU - Tokunaga, K.

AU - Yoshida, N.

AU - Kubota, Y.

AU - Noda, N.

AU - Imamura, Y.

AU - Oku, T.

AU - Kurumada, A.

AU - Sogabe, T.

AU - Kato, T.

AU - Plöchl, L.

PY - 2000/11

Y1 - 2000/11

N2 - CX-2002U and IG-43OU coated by VPS-W were developed to be as a light high-Z plasma-facing material. After brazing them on OFHC blocks using a Ti foil, their thermal response and thermal fatigue properties were examined with active cooling. No cracks and no exfoliation occurred on the W surface and the braze interface even after 160 cycles of heat load for 20 s at 10 MW/m2. This result indicates that the Ti-brazing is a possible alternative to Ag-brazing for joining carbon to Cu. Heat load resistance of the VPS-W coated CX-2002U/OFHC was much better than the VPS-W coated IG-430U/OFHC due to the excellent thermal conductivity of CX-2002U. VPS-W coated CFC/OFHC is a potential candidate for a high heat resistance armor material on plasma facing components.

AB - CX-2002U and IG-43OU coated by VPS-W were developed to be as a light high-Z plasma-facing material. After brazing them on OFHC blocks using a Ti foil, their thermal response and thermal fatigue properties were examined with active cooling. No cracks and no exfoliation occurred on the W surface and the braze interface even after 160 cycles of heat load for 20 s at 10 MW/m2. This result indicates that the Ti-brazing is a possible alternative to Ag-brazing for joining carbon to Cu. Heat load resistance of the VPS-W coated CX-2002U/OFHC was much better than the VPS-W coated IG-430U/OFHC due to the excellent thermal conductivity of CX-2002U. VPS-W coated CFC/OFHC is a potential candidate for a high heat resistance armor material on plasma facing components.

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U2 - 10.1016/S0920-3796(00)00399-9

DO - 10.1016/S0920-3796(00)00399-9

M3 - Conference article

AN - SCOPUS:0034318726

SN - 0920-3796

VL - 49-50

SP - 371

EP - 376

JO - Fusion Engineering and Design

JF - Fusion Engineering and Design

T2 - 5th International Symposium on Fusion Nuclear Technology

Y2 - 19 September 2000 through 24 September 2000

ER -

High heat flux test of actively cooled tungsten-coated carbon divertor mock-ups

Abstract

All Science Journal Classification (ASJC) codes

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