公开(公告)号：US06755884B2

公开(公告)日：2004-06-29

申请号：US10182205

申请日：2002-07-26

申请人： Kazumi Naito ,  Nobuyuki Nagato

发明人： Kazumi Naito ,  Nobuyuki Nagato

IPC分类号： B22F100

CPC分类号： H01G9/0525 ,  B22F2998/00 ,  C22C1/045 ,  C22C32/00 ,  C22C32/0031 ,  B22F1/0096

摘要： A niobium powder for capacitors, having an average particle size of from 10 to 500 &mgr;m, which is a granulated powder having an oxygen content of 3 to 9% by mass; a sintered body thereof; and a capacitor fabricated from the sintered body as one part electrode, a dielectric material formed on the surface of the sintered body, and another part electrode provided on the dielectric material. A capacitor manufactured from the sintered body of a niobium powder of the present invention is prevented from deterioration in the performance for a long period of time and has high reliability.

摘要翻译： 一种电容器用铌粉，其平均粒径为10〜500μm，为氧含量为3〜9质量％的造粒粉末; 其烧结体; 以及由烧结体制成的电容器作为一部分电极，形成在烧结体表面上的电介质材料和设置在电介质材料上的另一部分电极。 由本发明的铌粉末烧结体制成的电容器长时间不发生性能劣化，可靠性高。

公开(公告)号：US06660057B1

公开(公告)日：2003-12-09

申请号：US09857109

申请日：2001-06-01

申请人： Kazumi Naito ,  Kazuhiro Omori ,  Nobuyuki Nagato

发明人： Kazumi Naito ,  Kazuhiro Omori ,  Nobuyuki Nagato

IPC分类号： B22F100

CPC分类号： H01G9/0525 ,  C22C32/0089 ,  C23C8/24

摘要： A powder composition for a capacitor comprising a tantalum or niobium and a compound having a silicon-oxygen bond, at least a part of which may be nitrided and which has an average particle size of from 0.1 to 5 &mgr;m; a sintered body using the composition; and a capacitor constituted by the sintered body as one part electrode, and another part electrode. A capacitor favored with high reliability, lower dissipation level of power and smaller deterioration of capacitance than conventional tantalum capacitors using tantalum can be produced by using a sintered body of the powder composition for a capacitor.

摘要翻译： 一种用于电容器的粉末组合物，其包含钽或铌和具有硅 - 氧键的化合物，其至少一部分可被氮化并且其平均粒径为0.1至5μm; 使用该组合物的烧结体; 以及由烧结体构成为一部分电极的电容器和另一部分电极。 通过使用用于电容器的粉末组合物的烧结体，可以制造出具有高可靠性，较低耗散功率和较小的电容劣化的电容器。

公开(公告)号：US07011692B2

公开(公告)日：2006-03-14

申请号：US10682935

申请日：2003-10-14

申请人： Kazumi Naito ,  Kazuhiro Omori ,  Nobuyuki Nagato

发明人： Kazumi Naito ,  Kazuhiro Omori ,  Nobuyuki Nagato

IPC分类号： B22F1/00

CPC分类号： H01G9/0525 ,  C22C32/0089 ,  C23C8/24

摘要： A powder composition for a capacitor comprising a tantalum or niobium and a compound having a silicon-oxygen bond, at least a part of which may be nitrided and which has an average particle size of from 0.1 to 5 μm; a sintered body using the composition; and a capacitor constituted by the sintered body as one part electrode, and another part electrode. A capacitor favored with high reliability, lower dissipation level of power and smaller deterioration of capacitance than conventional tantalum capacitors using tantalum can be produced by using a sintered body of the powder composition for a capacitor.

公开(公告)号：US06663687B2

公开(公告)日：2003-12-16

申请号：US10182140

申请日：2002-07-26

申请人： Kazumi Naito ,  Nobuyuki Nagato

发明人： Kazumi Naito ,  Nobuyuki Nagato

IPC分类号： C22C104

CPC分类号： H01G9/0525 ,  C04B35/495 ,  C04B2235/3253 ,  C04B2235/404 ,  C04B2235/5436 ,  C04B2235/5445 ,  C22C32/0031

摘要： A nobium powder for capacitors, which contains from 0.05 to 20% by mass of niobium monoxide crystal and from 0.05 to 20% by mass of hexaniobium monoxide crystal; a sintered body thereof; and a capacitor fabricated from the sintered body as one part electrode, a dielectric material formed on the surface of the sintered body, and another part provided on the dielectric material. A capacitor manufactured from a sintered body of a niobium powder of the present invention is favored with good high-temperature characteristics.

摘要翻译： 一种电容器用铒粉，含有0.05〜20质量％的一氧化铌结晶和0.05〜20质量％的一氧化二铌结晶; 其烧结体; 以及由烧结体制成的电容器作为一部分电极，形成在烧结体表面上的电介质材料和设置在电介质材料上的另一部分。 由本发明的铌粉末烧结体制成的电容器具有良好的高温特性。

公开(公告)号：US06430026B1

公开(公告)日：2002-08-06

申请号：US09590669

申请日：2000-06-09

申请人： Nobuyuki Nagato ,  Kazumi Naito

发明人： Nobuyuki Nagato ,  Kazumi Naito

IPC分类号： H01G4008

CPC分类号： H01G9/0032 ,  C25D11/26 ,  H01G9/042

摘要： The present invention provides an electrode material for capacitors, capable of ensuring a large capacitance per unit weight without worsening the leakage current property, and a capacitor using the material. The present invention also provides an electrode material for capacitors, obtained by reacting a tantalum metal and/or a niobium metal or an alloy thereof having an oxide film on the surface thereof with an alkali solution to form a tantalic acid compound and/or a niobic acid compound on the surface thereof. Furthermore, the present invention provides a capacitor using the electrode material.

摘要翻译： 本发明提供一种用于电容器的电极材料，其能够确保每单位重量的大电容而不会使漏电流性能恶化，以及使用该材料的电容器。 本发明还提供了一种用于电容器的电极材料，其通过使其表面上具有氧化膜的钽金属和/或铌金属或其合金与碱溶液反应而形成钽酸化合物和/或铌 酸化合物的表面。 此外，本发明提供一种使用电极材料的电容器。

公开(公告)号：US07208027B2

公开(公告)日：2007-04-24

申请号：US10675955

申请日：2003-10-02

申请人： Kazumi Naito ,  Nobuyuki Nagato

发明人： Kazumi Naito ,  Nobuyuki Nagato

IPC分类号： B22F1/00

CPC分类号： H01G9/0525 ,  C04B35/495 ,  C04B2235/3253 ,  C04B2235/404 ,  C04B2235/5436 ,  C04B2235/5445 ,  C22C32/0031

摘要： A niobium powder for capacitors, which contains niobium monoxide crystal or hexaniobium monoxide crystal; a sintered body thereof; and a capacitor fabricated from the sintered body as one part electrode, a dielectric material formed on the surface of the sintered body, and another part electrode provided on the dielectric material.

摘要翻译： 用于电容器的铌粉末，其含有一氧化铌晶体或六氧化monoxide晶体; 其烧结体; 以及由烧结体制成的电容器作为一部分电极，形成在烧结体表面上的电介质材料和设置在电介质材料上的另一部分电极。

公开(公告)号：US07192465B2

公开(公告)日：2007-03-20

申请号：US10727548

申请日：2003-12-05

申请人： Kazumi Naito ,  Nobuyuki Nagato

发明人： Kazumi Naito ,  Nobuyuki Nagato

IPC分类号： B22F1/00 ,  B22F3/00 ,  H01G9/042 ,  H01G9/052

CPC分类号： H01G9/0525 ,  B22F2998/00 ,  C22C1/045 ,  C22C32/00 ,  C22C32/0031 ,  B22F1/0096

摘要： A niobium powder for capacitors, having an average particle size of from 10 to 500 μm, which is a granulated powder having an oxygen content of 3 to 9% by mass; a sintered body thereof; and a capacitor fabricated from the sintered body as one part electrode, a dielectric material formed on the surface of the sintered body, and another part electrode provided on the dielectric material. A capacitor manufactured from the sintered body of a niobium powder of the present invention is prevented from deterioration in the performance for a long period of time and has high reliability.

摘要翻译： 一种电容器用铌粉，其平均粒径为10〜500μm，为氧含量为3〜9质量％的造粒粉末; 其烧结体; 以及由烧结体制成的电容器作为一部分电极，形成在烧结体表面上的电介质材料和设置在电介质材料上的另一部分电极。 由本发明的铌粉末烧结体制成的电容器长时间不发生性能劣化，可靠性高。

公开(公告)号：US20050257642A1

公开(公告)日：2005-11-24

申请号：US10675955

申请日：2003-10-02

申请人： Kazumi Naito ,  Nobuyuki Nagato

发明人： Kazumi Naito ,  Nobuyuki Nagato

IPC分类号： H01G9/032 ,  C22C1/04 ,  C22C27/02 ,  C22C29/12 ,  C22C32/00 ,  H01G4/008 ,  H01G9/028 ,  H01G9/04 ,  H01G9/042 ,  H01G9/052

CPC分类号： H01G9/0525 ,  C04B35/495 ,  C04B2235/3253 ,  C04B2235/404 ,  C04B2235/5436 ,  C04B2235/5445 ,  C22C32/0031

摘要： A niobium powder for capacitors, which contains niobium monoxide crystal or hexaniobium monoxide crystal; a sintered body thereof; and a capacitor fabricated from the sintered body as one part electrode, a dielectric material formed on the surface of the sintered body, and another part electrode provided on the dielectric material.

摘要翻译： 用于电容器的铌粉末，其含有一氧化铌晶体或六氧化monoxide晶体; 其烧结体; 以及由烧结体制成的电容器作为一部分电极，形成在烧结体表面上的电介质材料和设置在电介质材料上的另一部分电极。

公开(公告)号：US06423110B1

公开(公告)日：2002-07-23

申请号：US09685693

申请日：2000-10-11

申请人： Kazumi Naito ,  Kazuhiro Omori ,  Nobuyuki Nagato

发明人： Kazumi Naito ,  Kazuhiro Omori ,  Nobuyuki Nagato

IPC分类号： C22C2702

CPC分类号： H01G9/0525 ,  C22C32/00 ,  C22C32/0089

摘要： A powder composition for a capacitor comprising a tantalum or niobium and a compound having a silicon-oxygen bond, at least a part of which may be nitrided and which has an average particle size of from about 0.1 to about 5 &mgr;m; a sintered body using the composition; and a capacitor constituted by the sintered body as one part electrode, and another part electrode. A capacitor favored with high reliability, lower dissipation level of power and smaller deterioration of capacitance than conventional tantalum capacitors using tantalum can be produced by using a sintered body of the powder composition for a capacitor.

摘要翻译： 一种用于包含钽或铌的电容器的粉末组合物和具有硅 - 氧键的化合物，其至少一部分可被氮化并且其平均粒度为约0.1至约5μm; 使用该组合物的烧结体; 以及由烧结体构成为一部分电极的电容器和另一部分电极。 通过使用用于电容器的粉末组合物的烧结体，可以制造出具有高可靠性，较低耗散功率和比较常规使用钽的钽电容器更小的电容劣化的电容器。

公开(公告)号：US06843825B2

公开(公告)日：2005-01-18

申请号：US10415374

申请日：2001-10-25

申请人： Kazumi Naito ,  Nobuyuki Nagato

发明人： Kazumi Naito ,  Nobuyuki Nagato

IPC分类号： C04B35/00 ,  B22F1/00 ,  B22F5/00 ,  C04B35/628 ,  C22C1/04 ,  C22C32/00 ,  H01G9/028 ,  H01G9/052

CPC分类号： H01G9/0525 ,  B22F1/0048 ,  B22F2998/00 ,  C22C1/045 ,  C22C32/0068 ,  B22F1/0096

摘要： A niobium primary powder having an average particle size of 0.01 to 0.5 μm and an average circular degree of 0.8 or more, the circular degree being defined by 4 πA/L2 (wherein A is an area of a solid projected on a plain face and L is an outer circumferential length of the projection view); a niobium primary agglomerated powder having an average particle size of 0.03 to 20 μm, which is an agglomerate of the niobium primary powder; a niobium secondary agglomerated powder having an average particle size of 50 to 150 μm, which is obtained by granulating the primary agglomerated powder; a sintered body of the niobium primary agglomerated powder or niobium secondary agglomerated powder; and a capacitor using the sintered body. By using sintered bodies of the niobium primary agglomerated powder or niobium secondary agglomerated powder, a capacitor having a large capacitance per unit volume and good voltage resistance can be manufactured.

摘要翻译： 平均粒径为0.01〜0.5μm，平均圆形度为0.8以上的铌初级粉末，圆形度由4piA / L 2定义（其中，A为投影在平原上的固体的面积 面和L是突出视图的外周长度）; 铌初级粉末的平均粒径为0.03〜20μm的铌初级凝聚粉末，其为铌初级粉末的附聚物; 平均粒径为50〜150μm的铌二次凝聚粉末，其通过造粒一次附聚粉末而得到; 铌一次凝聚粉末或铌二次凝聚粉末的烧结体; 和使用烧结体的电容器。 通过使用铌一次凝聚粉末或铌二次团聚粉末的烧结体，可以制造每单位体积的电容量大，耐电压性好的电容器。