Invention Grant
- Patent Title: Valve metal particles uniformly containing nitrogen and the method for preparing the same, the valve metal green pellets and sintered pellets, and the electrolytic capacitor anodes
- Patent Title (中): 阀门金属颗粒均匀地含有氮气及其制备方法，阀门金属颗粒和烧结球团矿以及电解电容器阳极
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Application No.: US12250627Application Date: 2008-10-14
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Publication No.: US08238078B2Publication Date: 2012-08-07
- Inventor: Bin Li , Luntao Pan , Aiguo Zheng , Yuezhong Ma , Yuewei Cheng , Xuecheng Dong , Xueqing Zhang , Zhidao Wang , Baojun Zhu
- Applicant: Bin Li , Luntao Pan , Aiguo Zheng , Yuezhong Ma , Yuewei Cheng , Xuecheng Dong , Xueqing Zhang , Zhidao Wang , Baojun Zhu
- Applicant Address: CN Shizuishan, Ningxia
- Assignee: Ningxia Orient Tantalum Industry Co., Ltd.
- Current Assignee: Ningxia Orient Tantalum Industry Co., Ltd.
- Current Assignee Address: CN Shizuishan, Ningxia
- Agency: Harness, Dickey & Pierce, P.L.C.
- Priority: CN200810002930 20080111
- Main IPC: H01G9/042
- IPC: H01G9/042 ; H01G9/045 ; C23C8/24 ; C23C8/48
Abstract:
The present invention relates to valve metal particles uniformly containing nitrogen and a method for preparing the same, and a valve metal green pellet and a sintered pellet made from the particles, and an electrolytic capacitor anode. The present invention provides valve metal particles uniformly containing nitrogen, wherein the difference ratio of nitrogen contents of particles is 20% or less. The present invention provides a process for preparing said valve metal particles uniformly containing nitrogen, wherein the raw material particles of the valve metal were heated in a nitrogen-containing gas at a temperature of 200° C. or less for 2 hours or more. The present invention also provides a valve metal green pellet made from said valve metal particles. The present invention also provides a valve metal sintered pellet.
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