*Zhefeng XU¹, Kazuhiro MATSUGI¹, Shaoming KANG¹, Yombum CHOI¹, Jinku YU² (1. Graduate School of Engineering, Hiroshima University(Japan), 2. State Key Laboratory of Metastable Materials Science and Technology, Yanshan University(China))

*HIEN HUU NGUYEN¹, MAKOTO NANKO¹ (1. Nagaoka University of Technology(Japan))

*Moipone Linda LETHABANE¹, Lubabalo M KUBONI¹, Peter Apata OLUBAMBI², Bamidele Lawrence BAYODE¹, Mxolisi Brendon SHONGWE¹, Munyadziwa Mercy RAMAKOKOVHU¹ (1. Institute for NanoEngineering Research, Department of Chemical, Metallurgy and Materials Engineering, Tshwane University of Technology(South Africa), 2. Centre for Nanoengineering and Tribocorrosion, School of Mining, Metallurgy and Chemical Engineering, University of Johannesburg(South Africa))

*Abdollah Bahador¹, Esah Hamzah¹, Katsuyoshi Kondoh², Tuty Asma Abu bakar¹, Farazila Yusof³, Junko Umeda², Shota Kariya² (1. Universiti Teknologi Malaysia(Malaysia), 2. Osaka University(Japan), 3. University of Malaya(Malaysia))