*Takashi Ikeda¹, Yuji Kasashima², Fumihiko Uesugi², Kota Tsutsumi¹ (1. NIPPON TUNGSTEN CO.,LTD.(Japan), 2. Advanced Manufacturing Research Institute, National Institute of Advanced Industrial Science and Technology(AIST)(Japan))

*Sadatsugu Takayama¹, Motoyasu Sato² (1. National Institute for Fusion Science(Japan), 2. Chubu University(Japan))

*Takahiro Yoshihara¹ (1. Nippon Tungsten Co.,ltd.(Japan))

*Takumi TAZAWA¹, Keiichiro TAKAHASHI¹, Satofumi MARUYAMA¹, Takuya FUJIMA¹, Naoto SHIRAKI¹ (1. Tokyo City University(Japan))

*Hiroyuki Hosokawa¹, Kiyotaka Kato¹, Koji Shimojima¹ (1. National Institute of Advanced Industrial Science and Technology (Japan))

*Masaru Kawakami¹ (1. Fuji Die Co., Ltd(Japan))

*Masayuki Takada^1,2, Tomohiro Tsutsumi¹, Yoshihiro Mori¹, Hideaki Matsubara² (1. Nippon Tokushu Goukin CO., LTD.(Japan), 2. Dept. Environmental Studies, Tohoku University(Japan))

*Tetsushi MATSUDA¹, Hideaki MATSUBARA^1,2 (1. Japan Fine Ceramics Center(Japan), 2. Tohoku University(Japan))

*Yoshiharu Utsumi¹, Hiroka Miyazaki¹, Keiichi Tsuda¹, Ryoji Ohashi², Masatoshi Tokunaga³ (1. Sumitomo Electric Industries, Ltd.(Japan), 2. Kawasaki Heavy Industries, Ltd.(Japan), 3. Nippon Steel & Sumitomo Metal Corporation(Japan))

*Bryan Roebuck¹, Ken Mingard¹ (1. National Physical Laboratory(UK))

*Toshiyuki Takahashi¹ (1. Tungaloy corporation(Japan))

*Akira ONO¹, Kazuki OKADA¹, Hisashi HOMMA¹, Yukito NAKANISHI¹ (1. Mitsubishi Materials Corporation(Japan))

*Hiroyuki NAKAYAMA¹, Kimihiro OZAKI¹, Yasuhito MUKAIDE² (1. National Institute of Advanced Industrial Science and Technology(Japan), 2. NOTOALLOY Co., Ltd(Japan))

*Sho Tatsuoka¹, Takuya Ishigaki¹, Kenichi Sato¹, Kosuke Yanagisawa¹, Kenji Yamaguchi¹, Shin Nishida¹ (1. Mitsubishi Materials Corporation(Japan))

*Lei LIU¹, Kenta SAKURAGAWA¹, Yu TAKASU¹, Kensaku MAEDA¹, Tetsuhiko ONDA¹, Zhong-Chun CHEN¹ (1. Department of Mechanical and Aerospace Engineering, Graduate School of Engineering, Tottori University(Japan))