1. Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan.
2. Department of Mechanical Systems Engineering, Graduate School of Engineering, Tohoku University, 6-6-01 Aramaki-aza-aoba, Aoba-ku, Sendai 980-8579, Japan.
3. College of Engineering Science and Technology, Shanghai Ocean University, Shanghai 201306, China.
4. Laboratory of Tribology and System Dynamics, Ecole Centrale de Lyon, 36 Avenue Guy de Collongue 69134, Ecully Cedex, France.
5. Faculty of Engineering, Iwate University, 4-3-5 Ueda, Morioka, Iwate 020-8551, Japan.