[1] Southwest Univ Sci & Technol, Sch Mat & Chem, Mianyang 621010, Sichuan, Peoples R China
[2] Panzhihua Univ, Sch Vanadium & Titanium, Panzhihua 617000, Sichuan, Peoples R China
[3] Marine Equipment Inspect & Testing Co Ltd, Qingdao 266071, Shandong, Peoples R China