A new approach of PFM development with high performance and accuracy considering complex stress loading and high energy beam irradiation

• Project/Area Number: 20760576
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Nuclear fusion studies
• Research Institution: Tohoku University
• Principal Investigator: NOGAMI Shuhei Tohoku University, 大学院・工学研究科, 助教 (00431528)
• Project Period (FY): 2008 – 2010
• Project Status: Completed (Fiscal Year 2010)
• Budget Amount: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000); Fiscal Year 2010: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2009: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2008: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
• Keywords: 核融合炉 / プラズマ対向材料 / タングステン合金 / 複合応力負荷 / ヘリウム / 表面損傷 / 耐粒子線照射特性

Research Abstract

Surface damage behavior due to helium ion irradiation under stress loading in nano-structured tungsten alloy was evaluated in order to estimate the applicability to plasma facing material. The current nano-structured tungsten alloy showed almost the same surface damage resistance as the commercial pure tungsten under low energy helium ion irradiation around 1000C when the irradiation fluence exceeded the peculiar value (1 x 10^<22>He/m^2in this study). Moreover, the effect of stress loading during helium ion irradiation was not clear above the peculiar fluence.

Research Products

• [Journal Article] Microstructure Development in Neutron Irradiated Tungsten Alloys (2011)
  • Author(s): T.Tanno, M.Fukuda, S.Nogami, A.Hasegawa
  • Journal Title: Mater.Trans. Pages: 52-57
  • Peer Reviewed
• [Journal Article] Improvement of Surface Exfoliation Behavior by Helium-ion Bombardment of a Tungsten Alloy Fabricated by Mechanical Alloying (2009)
  • Author(s): T.Ogawa, A.Hasegawa, H.Kurishita, S.Nogami
  • Journal Title: J.Nucl.Sci.Tech. 46-7 Pages: 717-723
  • Peer Reviewed
• [Journal Article] Improvement of Surface Exfoliation Behavior by Helium-ion Bombardment of a Tungsten Alloy Fabricated by Mechanical Alloying (2009)
  • Author(s): 小川琢之、長谷川晃、栗下裕明、野上修平
  • Journal Title: Journal of Nuclear Science and Technology 46-7 Pages: 717-723
  • Peer Reviewed
• [Presentation] 中性子照射挙動解析に基づくプラズマ対向機器用タングステンの適用性の検討 (2010)
  • Author(s): 丹野敬嗣、福田誠、野上修平、田中照也、長谷川晃
  • Organizer: プラズマ・核融合学会第27回年会
  • Place of Presentation: 北海道大学
  • Year and Date: 2010-11-30
• [Presentation] ナノ構造タングステン合金のHeイオン照射による表面剥離抑制機構に関する研究 (2008)
  • Author(s): 小川琢之、野上修平、長谷川晃、栗下裕明
  • Organizer: 第7回核融合エネルギー連合講演会
  • Place of Presentation: 青森市男女共同参画プラザ
  • Year and Date: 2008-06-21