久保田 雄輔、野田信明、相良明男、井上徳之、赤石憲也、山本純也、本島修
Y. Kubota, N. Noda, A. Sagara, N. Inoue, K. Akaishi, J. Yamamoto, O. Motojima


LHD用ダイバータ板の開発・研究 各種カーボン・銅接合材の熱負荷試験
Research and Development of Divertor Plates for LHD
(High Heat Flux Tests of Various Kinds of Materials)

Date of publication:

Apr. 1995

Key words:

LHD, ACT, divertor, high heat flux, thermal fatigue test, carbon, graphite, brazed material, mechanically-joined material


High heat flux tests of various carbon copper(C-Cu) brazed materials and mechanically-joined materials are described, which have been carried out to develop and prepare the reliable divertor plate of large helical device(LHD). The thermal properties of the materials were evaluated through high heat flux tests(3-15MW/m^2) and thermal fatigue tests( ~5100 thermal cycling shots) by using a test facility ACT with a 100kW electron gun. A set of the results showed that several brazed materials with a carbon carbon composite tile and with a graphite tile can be used under high heat fluxes of up to 10 MW/m^2 and 5 MW/m^2, respectively. Also, the other results showed that the thermal properties of mechanically-joined materials can be improved drastically by using a thin carbon sheet as a compliant sheet, which is applicable to the divertor plates of LHD in phase I .

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