公开(公告)号：US4468719A

公开(公告)日：1984-08-28

申请号：US250408

申请日：1981-04-02

Applicant: Shigeaki Shimizu ,  Yoshimi Kubo ,  Tetsuo Suzuki ,  Takashi Kizaki ,  Hitoshi Igarashi

Inventor： Shigeaki Shimizu ,  Yoshimi Kubo ,  Tetsuo Suzuki ,  Takashi Kizaki ,  Hitoshi Igarashi

IPC: B22F5/00 ,  B22F1/00 ,  H01G9/00 ,  H01G9/04 ,  H01G9/052

CPC classification number: H01G9/052 ,  H01G4/085

Abstract: A porous body of Ti-Al alloy has a novel structure for a solid electrolytic capacitor, having improved values of leakage current and dielectric loss. The porous body of Ti-Al alloy has spherical particles which partially contact each other to form an integral body. The surfaces of the spherical particles have a ruggedness in the order of several microns or less. Because the diameter of the spherical particle is greater than the size of the ruggedness, the porous body has rough voids which provide a wide passageway through which a manganese nitrate solution penetrates. The wide passageway is effective for decreasing the number of times when there is a thermal decomposition of the manganese nitrate, thereby reducing the series resistance of the resultant cathode. In addition, this novel structure makes it possible to avoid production difficulties which are usually encountered when a solid electrolytic capacitor, having a high capacitance, is produced from a finely divided Ti-Al alloy.

Abstract translation: Ti-Al合金多孔体具有固体电解电容器的新型结构，具有改善的漏电流值和介电损耗。 Ti-Al合金的多孔体具有部分地彼此接触以形成整体的球形颗粒。 球形颗粒的表面具有几微米或更小数量级的粗糙度。 由于球形颗粒的直径大于粗糙度的大小，多孔体具有粗糙的空隙，其提供了硝酸锰溶液穿过的宽通道。 宽通道对于减少硝酸锰热分解的次数是有效的，从而降低所得阴极的串联电阻。 此外，这种新颖的结构使得可以避免当由细分Ti-Al合金产生具有高电容的固体电解电容器时通常遇到的生产困难。

公开(公告)号：US4331477A

公开(公告)日：1982-05-25

申请号：US82217

申请日：1979-10-04

Applicant: Yoshimi Kubo ,  Hitoshi Igarashi

Inventor： Yoshimi Kubo ,  Hitoshi Igarashi

IPC: C22F1/18 ,  B22F3/10 ,  B22F3/11 ,  B22F5/00 ,  C22C1/08 ,  C22C14/00 ,  C22C21/00 ,  C22F1/00 ,  C22F1/04 ,  H01G9/04 ,  H01G9/045 ,  H01G9/052 ,  B22F3/00

CPC classification number: H01G9/045 ,  B22F3/11 ,  B22F3/1103 ,  H01G9/052 ,  Y10T428/12153

Abstract: A porous, sintered Ti-Al alloy has specific surface area of 0.01-1 m.sup.2 /g, density of 20-80% of theoretical density and good mechanical strength, suitable for use in capacitor anode bodies, catalyzers, filters, etc. A mixed, press-shaped body of 10-90 atom. % Ti powder and 90-10 atom. % Al powder is processed by a first heat-treatment at 500.degree. to 665.degree. C. for 5 to 60 minutes to make it porous and then by a second heat-treatment at 700.degree. to 1300.degree. C. for 5 to 60 minutes to increase mechanical strength.

Abstract translation: 多孔烧结Ti-Al合金的比表面积为0.01-1 m2 / g，密度为理论密度的20-80％，机械强度好，适用于电容器阳极体，催化剂，过滤器等。 ，10-90原子的压制体。 ％Ti粉末和90-10原子。 通过在500〜665℃下进行第一次热处理5〜60分钟，使其成为多孔，然后在700〜1300℃进行第二次热处理5〜60分钟， 增加机械强度。