[3A01-04] Reactor Component Technology

[3A02] Development of Divertor Heat Removal Component Using Tungsten-Copper Alloy Bonding with SPS Method

*Takanori Murase¹, Tomohiro Morisaki^1,2, Yuki Hayashi^1,2, Hiroaki Sakata³, Shinji Kitagaki³, Yuta Takahashi³, Yohei Nakajima³ (1. NIFS, 2. SOKENDAI, 3. TOHO KINZOKU)

Keywords:Divertor, Tungsten, Copper Alloy, Spark Plasma Sintering, Heat Load

As a divertor heat removal component of a fusion device, tungsten (W) and chromium-zirconium-copper (CuCrZr) joints were fabricated by the discharge plasma sintering (SPS) method. The thermal stress relaxation layer of W-Cu mixed powder was confirmed to have sufficient density. A test piece was fabricated using the proposed method and installed in the divertor section of a large helical device LHD. The results of the infrared camera during the experiment and the damage after the experiment are also reported.