发明授权
- 专利标题： Niobium or tantalum powder and method for production thereof, and solid electrolytic capacitor
- 专利标题（中）： 铌或钽粉及其制造方法和固体电解电容器
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申请号： US10297083申请日： 2001-05-31
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公开(公告)号： US07204866B2公开(公告)日： 2007-04-17
- 发明人: Yukio Oda , Yujiro Mizusaki
- 申请人： Yukio Oda , Yujiro Mizusaki
- 申请人地址： JP Tokyo
- 专利权人： Cabot Supermetals K.K.
- 当前专利权人： Cabot Supermetals K.K.
- 当前专利权人地址： JP Tokyo
- 代理机构： Kilyk & Bowersox, P.L.L.C.
- 优先权： JP2000-165104 20000601
- 国际申请： PCT/JP01/04596 WO 20010531
- 国际公布： WO01/91953 WO 20011206
- 主分类号： B22F1/00
- IPC分类号： B22F1/00 ; G01H9/052
摘要：
A niobium or tantalum powder of the present invention comprises aggregates in which primary particles of niobium or tantalum are aggregated, and have a pore distribution having a peak in the range from 1 to 20 μm as measured by mercury porosimetry. That is, the niobium or tantalum powder of the present invention comprises aggregates having large pores, which connect with vacancies between the primary particles and facilitate the permeation of an electrolyte over the entirety of the inside of each aggregate. Accordingly, a solid electrolytic capacitor comprising an anode electrode made of the niobium or tantalum powder has high capacity and also a low ESR.
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