605 タングステンと銅との接合強度に関する研究(OS4-(2)オーガナイズドセッション《材料と組織》)

概要

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Since plasma facing components for fusion reactor devices are exposed to very high heat load and plasma particle attacks, the plasma facing materials are required to have high thermal resistance, high thermal conductivity, thermal shock resistance, radiation damage resistance, etc. The large erosion and the large tritium inventory become important problems though carbon materials have been used as the plasma facing materials. On the other hand, tungsten materials have high strength and high hardness at high temperatures, low erosion and low tritium inventory, etc. Tungsten materials are expected to use as the plasma facing materials with high performances for the next fusion devices. It is feared that the joining strength of tungsten and the cooling structure material decrease by neutron radiation damage and heat radiation. In this study, it aims to clarify the influence of the radiation damage and the heat radiation on the joining strength of tungsten and copper. As the results obtained, the joining specimen joined by non defective bonding (NDB) had very high joining strength. The joining technique of tungsten material by means of NDB will be useful to manufacture the plasma facing components with high performances for the next fusion reactor devices.
一般社団法人日本機械学会の論文
2011-08-26