1. School of Materials Science and Engineering, Xiangtan University, Xiangtan 411105, P.R. China
2. College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, P.R. China
3. Hunan Bangzer Technology Co., Ltd., Xiangtan 411100, P.R. China
4. Foshan Green Intelligent Manufacturing Research Institute of Xiangtan University, Foshan 528311, P.R. China