1. School of Material Science & Engineering, Guangxi Key Laboratory of Information Materials and Guangxi Collaborative Innovation Center of Structure and Property for New Energy and Materials Guilin University of Electronic Technology Guilin 541004 PR China
2. School of Mechanical & Electrical Engineering Guilin University of Electronic Technology Guilin 541004 PR China.
3. State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, School of Material Science and Engineering Lanzhou University of Technology Lanzhou 730050 P. R. China.