*Rie SUZUKI¹, Nobuya AMANO¹, Yoshiyuki SHIMADA¹, Makoto KIKUCHI¹ (1. Sumitomo Electric Sintered Alloy, Ltd.(Japan))

*Ryuji HASHIMOTO¹, Takuya SATO¹, Yuji UMEDA¹, Kenichi SUZUKI¹, Yasushi ENOKIDO¹, Tomoyasu TANIYAMA² (1. TDK Corporation(Japan), 2. Tokyo Institute of Technology(Japan))

*Seiichi SAITO¹, Nobuhito CHUJO¹, Toshifumi AOYAMA¹, Masakatsu FUKUDA¹ (1. Mitsubishi Steel Mfg. Co., Ltd.(Japan))

*Takuya Takashita¹, Naomichi Nakamura¹ (1. JFE steel corporation(Japan))

*Satoshi MOTOZUKA¹, Hisashi SATO² (1. National Institute of Technology, Gifu College(Japan), 2. Nagoya Institute of Technology(Japan))