*Gye Seok An¹, Ji Hyeong Kwon¹, Su Young Kang¹, Young Seo Kim¹, Yu Jin Kim¹ (1. Kyonggi University (Korea))

*WU CHEN¹, yoshikazu akira¹, yoshinobu yamaguchi¹, hiroto tomiyoshi¹ (1. Graduate School of Kagoshima Univ. (Japan))

*André Luiz Vidilli¹, Lucas Barcelos Otani², Claudemiro Bolfarini² (1. Graduate Program in Materials Sci. and Engineering, Federal Univ. of Sao Carlos - Brazil (Brazil), 2. Department of Materials Engineering, Federal Univ. of Sao Carlos - Brazil (Brazil))