发明名称 |
SINTER OF NIOBIUM FOR CAPACITOR, AND METHOD OF MANUFACTURE THEREOF |
摘要 |
A niobium sintered body for a capacitor, which exhibits an LC value of not larger than 300 mu A/g as measured after an electrolytic oxide film is formed thereon. The sintered body preferably exhibits a product (CV) Äi.e., a product of capacity (C) with electrolysis voltage (V)Ü of at least 40,000 mu F.V/g. The sintered body is produced by sintering a niobium powder containing at least one niobium compound selected from niobium nitride, niobium carbide and niobium boride. A capacitor manufactured from the sintered body has a large capacity per unit weight and good leak current characteristics. Especially, a sintered body made of a niobium powder having a large average degree of roundness has a relatively large porosity and a good packed density, and a capacitor manufactured from this sintered body has a large capacity and good withstand voltage characteristics. |
申请公布号 |
EP1137021(A4) |
申请公布日期 |
2006.07.26 |
申请号 |
EP19990935067 |
申请日期 |
1999.08.05 |
申请人 |
SHOWA DENKO KABUSHIKI KAISHA |
发明人 |
NAITO, KAZUMI;SHIMOJIMA, ATSUSHI |
分类号 |
B22F1/00;C22C27/02;H01G9/052;(IPC1-7):H01G9/042 |
主分类号 |
B22F1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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