ウエダ　ヨシオ   Ueda Yoshio   上田　良夫    所属   追手門学院大学  理工学部 電気電子工学科    職種   教授
言語種別	英語
発行・発表の年月	2007/10
形態種別	論文
査読	査読あり
標題	Development of tungsten materials for plasma facing components in Japan
執筆形態	共著・編著（代表編著を除く）
掲載誌名	FUSION SCIENCE AND TECHNOLOGY
掲載区分	国外
出版社・発行元	AMER NUCLEAR SOC
巻・号・頁	52(3),pp.513-520
担当区分	筆頭著者
著者・共著者	Y. Ueda,N. Ohno,S. Kajita,H. Kurishita,H. Iwakiri,K. Tokunaga,N. Yoshida
概要	This paper reports Japanese activities on tungsten material development and the basic studies on plasma and tungsten interactions. Effects of helium ion irradiation on embrittlement and bubble formation of various tungsten materials have been intensively investigated in Japan.. Details of the helium bubble formation mechanism, its effects on surface morphology and the impacts on dust formation are presented. Fine-grained and TiC fine-particles dispersed tungsten are being developed to increase the resistance of the material to degradation in the fusion reactor environment. Microstructures and specific features amenable to fusion environments are presented. The experimental results on repetitive heat pulses on surface roughening and cracking are shown. The repetitive heat pulse effects are very serious and further studies are needed. Important issues of tungsten material development for DEMO and commercial devices will be discussed.
DOI	10.13182/FST07-A1540
ISSN	1536-1055/1943-7641