1. Analytical and Testing Center; Sichuan University of Science & Engineering; Zigong 643000 P. R. China
2. College of Chemistry and Environmental Engineering; Sichuan University of Science & Engineering; Zigong 643000 P. R. China
3. Advanced Metal Materials Research Laboratory; Guangdong Zhaoqing Institute of Quality Inspection & Metrology; Zhaoqing 526000 P. R. China
4. School of Materials Science and Engineering; Central South University; Changsha 410083 P. R. China