2010 Fiscal Year Final Research Report

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

Research Project

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
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.

(4 results)