1. State Key Laboratory of Powder Metallurgy College of Chemistry and Chemical Engineering Central South University No. 932 South Lushan Road Changsha Hunan 410083 P. R. China
2. Hunan First Normol University No. 1015, Fenglin Road (the 3rd) Yuelu District Changsha Hunan Province 410205 P. R. China
3. Yongxing Longcheng High‐tech Materials Co., Ltd. Tangmen Village, Bianjiang, Hunan Province Chenzhou 423300 P. R. China
4. School of Material Science and Engineering Zhengzhou University No. 100 Science Avenue, Zhengzhou City, Henan Zhengzhou 450001 China