TY - JOUR
T1 - High heat loading properties of vacuum plasma spray tungsten coatings on reduced activation ferritic/martensitic steel
AU - Tokunaga, K.
AU - Hotta, T.
AU - Araki, K.
AU - Miyamoto, Y.
AU - Fujiwara, T.
AU - Hasegawa, M.
AU - Nakamura, K.
AU - Ezato, K.
AU - Suzuki, S.
AU - Enoeda, M.
AU - Akiba, M.
AU - Nagasaka, T.
AU - Kasada, R.
AU - Kimura, A.
PY - 2013
Y1 - 2013
N2 - High density W coatings on reduced activation ferritic martensitic steel (RAF/M) have been produced by Vacuum Plasma Spraying technique (VPS) and heat flux experiments on them have been carried out to evaluate their possibility as a plasma-facing armor in a fusion device. In addition, quantitative analyses of temperature profile and thermal stress have been carried out using the finite element analysis (FEA) to evaluate its thermal properties. No cracks or exfoliation has been formed by steady state and cyclic heat loading experiments under heat loading at 700 °C of surface temperature. In addition, stress distribution and maximum stress between interface of VPS-W and RAF/M have been obtained by FEA. On the other hand, exfoliation has occurred at interlayer of VPS-W coatings near the interface between VPS-W and RAF/M at 1300 °C of surface temperature by cyclic heat loading.
AB - High density W coatings on reduced activation ferritic martensitic steel (RAF/M) have been produced by Vacuum Plasma Spraying technique (VPS) and heat flux experiments on them have been carried out to evaluate their possibility as a plasma-facing armor in a fusion device. In addition, quantitative analyses of temperature profile and thermal stress have been carried out using the finite element analysis (FEA) to evaluate its thermal properties. No cracks or exfoliation has been formed by steady state and cyclic heat loading experiments under heat loading at 700 °C of surface temperature. In addition, stress distribution and maximum stress between interface of VPS-W and RAF/M have been obtained by FEA. On the other hand, exfoliation has occurred at interlayer of VPS-W coatings near the interface between VPS-W and RAF/M at 1300 °C of surface temperature by cyclic heat loading.
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U2 - 10.1016/j.jnucmat.2013.01.196
DO - 10.1016/j.jnucmat.2013.01.196
M3 - Article
AN - SCOPUS:84885482801
SN - 0022-3115
VL - 438
SP - S905-S908
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
IS - SUPPL
ER -