1. Department of Chemical & Environmental Engineering, Gunma University, 1-5-1 Tenjin-cho, Kiryu, Gunma 376-8515, Japan
2. Université du Sud Toulon Var, BP 20132, F-83957 La Garde Cedex,
France
3. CNRS, IM2NP (UMR 7334), BP 20132, F-83957 La Garde Cedex, France
4. Joining and Welding Research Institute, Osaka University, 1-1 Mihogaoka, Ibaraki, Osaka 567-0047,
Japan