公开(公告)号：EP3112059A4

公开(公告)日：2017-11-15

申请号：EP14883916

申请日：2014-02-27

申请人： NINGXIA ORIENT TANTALUM IND CO LTD

发明人： LI ZHONGXIANG ,  CHENG YUEWEI ,  CHEN XUEQING ,  WANG TING ,  SHI DEJUN ,  TONG ZEKUN ,  YAN YAN ,  TIAN XIAOYU ,  ZHAO ZHONGHUAN

IPC分类号： B22F9/20 ,  B22F9/04 ,  C22F1/18

CPC分类号： B22F1/0003 ,  B22F9/023 ,  B22F9/04 ,  B22F9/16 ,  B22F2009/043 ,  B22F2301/20 ,  B22F2304/10 ,  B22F2998/10 ,  C22F1/18 ,  C23G1/00

摘要： The present invention relates to a high-purity tantalum powder and a preparation method therefore. The tantalum powder has a purity of more than 99.995%, as analyzed by GDMS. Preferably, the tantalum powder has an oxygen content of not more than 1000 ppm, a nitrogen content of not more than 50 ppm, a hydrogen content of not more than 20 ppm, a magnesium content of not more than 5 ppm, and an average particle diameter D50 of less than 25 µm.