公开(公告)号：US20150352637A1

公开(公告)日：2015-12-10

申请号：US14655886

申请日：2013-12-26

Applicant: SHOWA DENKO K.K.

Inventor： Yoshinori SHIBUYA ,  Yasuo TSUMITA ,  Toshiya KAWASAKI

IPC: B22F1/00 ,  H01G9/052 ,  C25D5/48 ,  B22F3/10 ,  C25D11/34

CPC classification number: B22F1/0085 ,  B22F1/0003 ,  B22F1/0096 ,  B22F3/10 ,  B22F9/20 ,  B22F2998/10 ,  C22C1/045 ,  C22C27/02 ,  C22C32/0031 ,  C25D5/48 ,  C25D11/34 ,  H01G9/052 ,  H01G9/0525 ,  C22C1/05

Abstract: A chemical conversion body obtained from a niobium granulated product being porous and having high binding strength, an electrolytic capacitor including the chemical conversion body and a production method thereof. The capacitor includes a chemical conversion body which has a dielectric layer on its surface and a metal element other than niobium distributed therein so that the metal element surrounds niobium; and a cathode formed on the dielectric layer on the surface of the chemical conversion body. The chemical conversion body is produced by mixing niobium hydride and a compound containing a metal element other than niobium; and subjecting the mixture to heat treatment at a temperature higher than a diffusion starting temperature of the compound containing a metal element other than niobium to obtain a niobium granulated product; sintering the granulated product; and subjecting the sintered body to electrolytic oxidation to form a dielectric layer on its surface.

Abstract translation: 一种由多孔且具有高结合强度的铌造粒产品获得的化学转化体，包含该化学转化体的电解电容器及其制造方法。 电容器包括：化学转化体，其表面具有电介质层，分布有除了铌之外的金属元素，使得金属元素围绕铌; 以及形成在化学转化体的表面上的电介质层上的阴极。 化学转化体是通过混合氢化铌和含有除了铌之外的金属元素的化合物制备的; 并在比含有除了铌以外的金属元素的化合物的扩散开始温度高的温度下对混合物进行热处理，得到铌粒状物; 烧结造粒产品; 并对烧结体进行电解氧化，在其表面形成电介质层。

公开(公告)号：US20200090874A1

公开(公告)日：2020-03-19

申请号：US16472980

申请日：2017-09-29

Applicant: SHOWA DENKO K.K.

Inventor： Takeshi KAWAMOTO ,  Yuka NIIMI ,  Toshiya KAWASAKI ,  Yoshinori SHIBUYA ,  Takeshi KOHAMA

IPC: H01G9/00 ,  C08G61/12 ,  H01G9/15 ,  H01G9/028 ,  H01G9/048

Abstract: A method of producing a solid electrolytic capacitor, including a step of forming a dielectric film on the surface of a valve-acting metal having fine pores and a step of forming a solid electrolyte layer containing a conductive polymer on the dielectric film; wherein the solid electrolyte layer containing the conductive polymer is formed without using an oxidizing agent by: (i) a method of polymerizing at least one of the compounds (A1) represented by formula (1) disclosed herein in the presence of a compound (B) having a sulfo group; (ii) a method of copolymerizing at least one compound (A2) represented by formula (2) disclosed herein; and (iii) a method of polymerizing at least one of the compounds (A1) and (A2).

公开(公告)号：US20160254100A1

公开(公告)日：2016-09-01

申请号：US15027794

申请日：2014-10-07

Applicant: SHOWA DENKO K.K.

Inventor： Yoshinori SHIBUYA ,  Yasuo TSUMITA ,  Toshiya KAWASAKI

IPC: H01G9/052 ,  B22F9/04 ,  C22C27/02 ,  B22F1/00

CPC classification number: H01G9/0525 ,  B22F1/0085 ,  B22F1/0096 ,  B22F9/04 ,  B22F9/20 ,  B22F2009/041 ,  B22F2009/043 ,  B22F2302/25 ,  B22F2304/058 ,  C22C27/02 ,  H01G9/052

Abstract: A method of producing a niobium granulated powder, including the steps of: mixing niobium hydride and a metal oxide by a mechanical alloying method to produce a mechanical alloy; pulverizing the mechanical alloy; subjecting the pulverized mechanical alloy to heat treatment to allow the pulverized mechanical alloy to aggregate, to thereby form a granulated product. Also disclosed is a sintered body of the niobium granulated powder, an anode body produced from the sintered body and a capacitor including the sintered body.

Abstract translation: 一种铌造粒粉末的制造方法，其特征在于，包括以下机理合金化方法，通过机械合金法混合氢化铌和金属氧化物，制造机械合金; 粉碎机械合金; 对粉碎的机械合金进行热处理以使粉碎的机械合金凝集，从而形成造粒产物。 还公开了铌造粒粉末的烧结体，由烧结体制成的阳极体和包含该烧结体的电容器。

公开(公告)号：US20150340162A1

公开(公告)日：2015-11-26

申请号：US14758049

申请日：2013-12-26

Applicant: SHOWA DENKO K.K.

Inventor： Yoshinori SHIBUYA ,  Yasuo TSUMITA ,  Toshiya KAWASAKI

IPC: H01G9/042 ,  H01G9/00 ,  H01G9/052 ,  C22C27/02 ,  B22F3/10 ,  B22F5/00 ,  C22C1/05 ,  H01G9/145 ,  B22F9/04

CPC classification number: H01G9/0425 ,  B22F3/10 ,  B22F5/00 ,  B22F9/04 ,  B22F2009/041 ,  B22F2998/10 ,  C22C1/045 ,  C22C1/0491 ,  C22C1/05 ,  C22C27/02 ,  H01G9/0032 ,  H01G9/052 ,  H01G9/0525 ,  H01G9/145 ,  Y10T29/42 ,  B22F1/0088

Abstract: A chemical conversion body, electrolytic capacitor and production method are disclosed. The capacitor contains a chemical conversion body obtained by sintering a niobium granulated product. The sintered product is obtained by mixing niobium hydride and a niobium-aluminum intermetallic compound, pulverizing the mixture, and allowing the mixture to agglomerate by heat treatment to thereby form a granulated product; sintering the granulated product; and subjecting the sintered body to electrolytic oxidation to form a dielectric layer on the surface of the sintered body; in which chemical conversion body the sites of aluminum localization having a size of 0.1 μm to 0.5 μm are scattered in a depth of less than 0.06 μm from the surface of the dielectric layer. Nb2Al and Nb3Al can be preferably used as a niobium-aluminum intermetallic compound.

Abstract translation: 公开了一种化学转化体，电解电容器和制造方法。 该电容器含有通过烧结铌粒状物而得到的化学转化体。 通过混合氢化铌和铌 - 铝金属间化合物，粉碎混合物，并通过热处理使混合物凝聚从而形成颗粒状产物，得到烧结产物; 烧结造粒产品; 并对烧结体进行电解氧化，在烧结体的表面形成电介质层; 其中化学转化体的尺寸为0.1μm至0.5μm的铝定位部位从电介质层的表面散布在小于0.06μm的深度。 Nb2Al和Nb3Al可优选用作铌 - 铝金属间化合物。