国家自然科学基金项目51161003和50661001,广西自然科学基金重点项目2012GXNSFDA053001,广西大学广西有色金属及特色材料加工重点实验室开放基金GXKFJ12-01及广西大学科研基金项目XJZ110611资助;National Natural Science Foundation of China.51161003 and 50661001;Natural Science Foundation of Guangxi Province2012GXNSFDA053001;Foundation of Guangxi Key Laboratory of Processing for Non-ferrous Metal and Featured MaterialsGXKFJ12-01;Science Foundation of Guangxi UniversityXJZ110611