1. Department of Material and Metallurgical Engineering, Faculty of Industrial and Engineering System Technology, Institut Teknologi Sepuluh Nopember, Surabaya 60111, Indonesia
2. Department of Applied Chemistry and Biochemistry, Graduate School of Science and Technology, Kumamoto University, Kumamoto 860-8555, Japan
3. Faculty of Advanced Science and Technology, Kumamoto University, Kumamoto 860-8555, Japan