公开(公告)号：EP1194256B1

公开(公告)日：2005-08-31

申请号：EP00928853.1

申请日：2000-05-05

申请人： CABOT CORPORATION

发明人： HABECKER, Kurt, A. ,  FIFE, James, A.

IPC分类号： B22F9/04 ,  H01G9/052

CPC分类号： H01G9/0525 ,  B22F1/0055 ,  B22F1/0088 ,  B22F9/023 ,  B22F9/04 ,  B22F2009/043 ,  B22F2998/00 ,  C22C1/045

摘要： A niobium powder is described which when formed into an electrolytic capacitor anode, the anode has the capacitance of at least 62,000 CV/g. Methods of making flaked niobium powder which have high capacitance capability when formed into electrolytic capacitor anodes is also described. Besides niobium, the present invention is also applicable to other metals, including valve metals.

公开(公告)号：EP1082739B1

公开(公告)日：2005-02-16

申请号：EP99920263.3

申请日：1999-05-03

申请人： CABOT CORPORATION

发明人： FIFE, James, A.

IPC分类号： H01G9/052 ,  C22C1/04

CPC分类号： H01G9/0525 ,  B22F2998/00 ,  B22F2998/10 ,  B22F2999/00 ,  C22C1/045 ,  C22C32/0068 ,  B22F1/0055 ,  B22F1/0011 ,  B22F9/04 ,  B22F9/023 ,  B22F1/0088 ,  B22F2201/02

摘要： A nitrogen containing niobium powder is disclosed as well as electrolytic capacitors formed from the niobium powders. Methods to reduce DC leakage in a niobium anode are also disclosed.

公开(公告)号：EP1082739A1

公开(公告)日：2001-03-14

申请号：EP99920263.3

申请日：1999-05-03

申请人： CABOT CORPORATION

发明人： FIFE, James, A.

IPC分类号： H01G9/052 ,  C22C1/04

CPC分类号： H01G9/0525 ,  B22F2998/00 ,  B22F2998/10 ,  B22F2999/00 ,  C22C1/045 ,  C22C32/0068 ,  B22F1/0055 ,  B22F1/0011 ,  B22F9/04 ,  B22F9/023 ,  B22F1/0088 ,  B22F2201/02

摘要： A nitrogen containing niobium powder is disclosed as well as electrolytic capacitors formed from the niobium powders. Methods to reduce DC leakage in a niobium anode are also disclosed.

公开(公告)号：EP1266386B1

公开(公告)日：2009-09-23

申请号：EP01920686.1

申请日：2001-03-22

申请人： CABOT CORPORATION

发明人： KIMMEL, Jonathon, L. ,  KITCHELL, Ricky, W. ,  FIFE, James, A.

IPC分类号： H01G9/052

CPC分类号： C01G33/00 ,  C01P2004/03 ,  C01P2006/40 ,  C01P2006/80 ,  C04B35/495 ,  C04B35/638 ,  C04B35/64 ,  C22C29/12 ,  C22C2001/1089 ,  H01G9/042 ,  H01G9/052 ,  H01G9/0525

摘要： Methods to at least partially reduce a niobium oxide are described wherein the process includes heat treating the niobium oxide in the presence of a getter material and in an atmosphere which permits the transfer of oxygen atoms from the niobium oxide to the getter material, and for a sufficient time and at a sufficient temperature to form an oxygen reduced niobium oxide. Niobium oxides and/or suboxides are also described as well as capacitors containing anodes made from the niobium oxides and suboxides. Anodes formed from niobium oxide powders using binders and/or lubricants are described as well as methods to form the anodes.

公开(公告)号：EP0946323B1

公开(公告)日：2003-10-29

申请号：EP97946465.8

申请日：1997-11-05

申请人： CABOT CORPORATION

发明人： FIFE, James, A. ,  LIU, Jane, Jia ,  STEELE, Roger, W.

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

CPC分类号： H01G9/0525 ,  B22F2998/00 ,  C22C1/045 ,  B22F9/023

摘要： A flaked niobium powder is disclosed as well as electrolytic capacitors formed from the flaked niobium powders. Niobium powders having a BET surface area of at least about 0.50 m2/g are also disclosed and capacitors made therefrom, as well as niobium powders doped with an oxygen content of at least 2,000 ppm. Methods to reduce DC leakage in a niobium anode are also disclosed.

公开(公告)号：EP1266386A2

公开(公告)日：2002-12-18

申请号：EP01920686.1

申请日：2001-03-22

申请人： CABOT CORPORATION

发明人： KIMMEL, Jonathon, L. ,  KITCHELL, Ricky, W. ,  FIFE, James, A.

IPC分类号： H01G9/052

CPC分类号： C01G33/00 ,  C01P2004/03 ,  C01P2006/40 ,  C01P2006/80 ,  C04B35/495 ,  C04B35/638 ,  C04B35/64 ,  C22C29/12 ,  C22C2001/1089 ,  H01G9/042 ,  H01G9/052 ,  H01G9/0525

摘要： Methods to at least partially reduce a niobium oxide are described wherein the process includes heat treating the niobium oxide in the presence of a getter material and in an atmosphere which permits the transfer of oxygen atoms from the niobium oxide to the getter material, and for a sufficient time and at a sufficient temperature to form an oxygen reduced niobium oxide. Niobium oxides and/or suboxides are also described as well as capacitors containing anodes made from the niobium oxides and suboxides. Anodes formed from niobium oxide powders using binders and/or lubricants are described as well as methods to form the anodes.

公开(公告)号：EP0946323B2

公开(公告)日：2011-06-15

申请号：EP97946465.8

申请日：1997-11-05

申请人： CABOT CORPORATION

发明人： FIFE, James, A. ,  LIU, Jane, Jia ,  STEELE, Roger, W.

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

CPC分类号： H01G9/0525 ,  B22F2998/00 ,  C22C1/045 ,  B22F9/023

摘要： A flaked niobium powder is disclosed as well as electrolytic capacitors formed from the flaked niobium powders. Niobium powders having a BET surface area of at least about 0.50 m2/g are also disclosed and capacitors made therefrom, as well as niobium powders doped with an oxygen content of at least 2,000 ppm. Methods to reduce DC leakage in a niobium anode are also disclosed.

摘要翻译： 公开了片状铌粉以及由片状铌粉形成的电解电容器。 还公开了具有至少约0.50m 2 / g的BET表面积的铌粉末以及由其制成的电容器以及掺杂有至少2,000ppm的氧含量的铌粉末。 还公开了减少铌阳极中DC泄漏的方法。

公开(公告)号：EP1194256B2

公开(公告)日：2010-10-13

申请号：EP00928853.1

申请日：2000-05-05

申请人： CABOT CORPORATION

发明人： HABECKER, Kurt, A. ,  FIFE, James, A.

IPC分类号： B22F9/04 ,  H01G9/052

CPC分类号： H01G9/0525 ,  B22F1/0055 ,  B22F1/0088 ,  B22F9/023 ,  B22F9/04 ,  B22F2009/043 ,  B22F2998/00 ,  C22C1/045

公开(公告)号：EP1171254A1

公开(公告)日：2002-01-16

申请号：EP00916452.6

申请日：2000-03-16

申请人： CABOT CORPORATION

发明人： HABECKER, Kurt, A. ,  FIFE, James, A.

IPC分类号： B22F1/00 ,  B22F9/04 ,  C22C1/04

CPC分类号： H01G9/0525 ,  B22F1/0055 ,  B22F1/0085 ,  B22F1/0088 ,  B22F9/04 ,  B22F2009/043 ,  B22F2998/00 ,  B22F2999/00 ,  C22C1/045 ,  B22F1/0007 ,  B22F9/023

摘要： Methods of forming niobium powders and other metal powders are described. The method involves milling the metal powders at elevated temperatures and in the presence of at least one liquid solvent. The methods of the present invention have the ability to reduce DC leakage and/or increase capacitance capabilities of metal powders when formed into capacitor anodes. The present invention further has the ability to significantly reduce the milling time necessary to form high surface area metal powders and leads to reducing the amount of contaminants in the metal powders. Metal powders such as niobium powders having reduced amount of contaminants and/or having DC leakage or capacitance capabilities are also described. A process is further described for forming a flaked metal by wet-milling a metal powder into a flaked metal wherein at least one liquid fluorinated fluid is present during the wet-milling process. The process is particularly well suited for forming metal flakes, such as niobium or tantalum flakes, of high purity.

公开(公告)号：EP0587734A1

公开(公告)日：1994-03-23

申请号：EP92912824.0

申请日：1992-05-28

申请人： CABOT CORPORATION

发明人： FIFE, James, A.

IPC分类号： H01G9 ,  B22F1 ,  B22F3 ,  B22F5 ,  C22C49

CPC分类号： H01G9/042 ,  B22F1/004 ,  B22F1/0085 ,  B22F3/002 ,  H01G9/0525

摘要： Procédé de production d'un condensateur au tantale d'une capacité (et efficacité volumétrique) spécifique améliorée. On procède à la précipitation de courtes fibres de tantale à partir d'un liquide porteur afin de former un feutre, ou on les fait rouler afin de former des particules contenant des fibres, et dans les deux cas on les lie de manière à former un feutre ou des particules contenant les fibres dans une orientation aléatoire dans un réseau non aligné. On chauffe lesdites particules ou ledit feutre afin de lier ensemble lesdites fibres, de purifier et (facultativement) de leur donner une forme cyclindrique. On peut ensuite traiter le feutre ou les particules de manière classique afin de former le condensateur. L'invention concerne également des fibres et des boulettes, auxquelles on a donné une forme cylindrique, de superficie accrue.