Institution: | (1) Department of Materials Science and Engineering, Niihama National College of Technology, 7-1 Yagumo-cho, Niihama, Ehime, 792-8580, Japan;(2) Graduate Course of Materials Science and Engineering, Ehime University, Ehime, Japan;(3) Sumitomo Metal Mining Co., Tokyo, Japan;(4) Department of Materials Science and Engineering, Ehime University, Ehime, Japan |