Tantalum powder for capacitors
    2.
    发明授权
    Tantalum powder for capacitors 有权
    电容器用钽粉

    公开(公告)号:US06689187B2

    公开(公告)日:2004-02-10

    申请号:US09925975

    申请日:2001-08-10

    申请人: Yukio Oda

    发明人: Yukio Oda

    IPC分类号: B22F100

    摘要: The tantalum powder for capacitors of the present invention has a specific surface area SB as determined by the BET method of 1.3 m2/g or more, and an SB/SF ratio between the specific surface area SB as determined by the BET method and the specific surface area SF determined by the FSS method of 4 to 10. This tantalum powder not only has a large specific surface area SB, but also has suitable cohesive strength and uniform porosity. Consequently, a solid state electrolytic capacitor having high capacitance and low ESR can be obtained by providing with a capacitor anode formed from a sintered body of this tantalum powder. In addition, whether or not this tantalum powder is suitable for the production of a tantalum capacitor having high capacitance and low ESR can be determined easily and reliably by evaluating the tantalum powder using the specific surface area SB as determined by the BET method and the SB/SF ratio between SB and the specific surface area SF determined by the FSS method.

    摘要翻译: 本发明的电容器用钽粉末,通过BET法测定的比表面积SB为1.3m 2 / g以上,BET法测定的比表面积SB之间的SB / SF比 并且通过FSS法测定的比表面积SF为4〜10。该钽粉末不仅具有大的比表面积SB,而且具有合适的内聚强度和均匀的孔隙率。因此,具有高电容的固态电解电容器 通过提供由该钽粉末的烧结体形成的电容器阳极可以获得低的ESR。 此外,通过使用BET法和SB测定的比表面积SB评价钽粉末,可以容易且可靠地测定该钽粉末是否适用于制造高容量,低ESR的钽电容器 / SF比例,通过FSS法测定的比表面积SF。

    Niobium powder, process for producing the same and solid electrolytic capacitor therefrom
    4.
    发明申请
    Niobium powder, process for producing the same and solid electrolytic capacitor therefrom 审中-公开
    铌粉,其制造方法和固体电解电容器

    公开(公告)号:US20060016291A1

    公开(公告)日:2006-01-26

    申请号:US10532357

    申请日:2003-10-22

    IPC分类号: C22C27/02

    摘要: A niobium powder can be used to manufacture a niobium capacitor of excellent electrical properties The niobium powder when formed into a sintered body of 3.15 to 3.9 g/cm3 density exhibits a capacitance (CV value at a formation voltage of 20V) ranging from 80 to 240 kCV/g and a CV retention of 57% or higher. With respect to the production of the niobium powder, the employed potassium niobate fluoride has a water content of 1000 ppm or less as determined from the amount of water generated upon heating at 600° C. according to the Karl Fischer method.

    摘要翻译: 可以使用铌粉末制造具有优异电性能的铌电容器。当形成为3.15至3.9g / cm 3密度的烧结体时的铌粉末表现出电容(形成电压下的C​​V值 20V)为80〜240kCV / g,CV保持率为57%以上。 关于铌粉的生产,使用的铌酸铌氟化物根据Karl Fischer法从600℃加热产生的水量确定为1000ppm以下的水分含量。

    Duplex structure stainless steel having high strength and elongation and
a process for producing the steel
    5.
    发明授权
    Duplex structure stainless steel having high strength and elongation and a process for producing the steel 失效
    具有高强度和伸长率的双相结构不锈钢和用于生产钢的方法

    公开(公告)号:US5624504A

    公开(公告)日:1997-04-29

    申请号:US481489

    申请日:1995-07-11

    CPC分类号: C22C38/40 C22C38/32

    摘要: A high strength and elongation stainless steel with a hardness of at least HV is formed of a duplex structure comprising 20% to 95% by volume of martensite having an average grain diameter of not more than 10 .mu.m, with the balance being essentially ferrite, the steel including, by weight, up to 0.10% C, up to 2.0% Si, up to 4.0% Mn, up to 0.040% P, up to 0.010% S, up to 4.0% Ni, from 10.0% to 20.0% Cr, up to 0.12% N, more than 0.0050% to 0.0300% B, up to 0.02% O and up to 4.0% Cu, and optionally contains up to 0.20% A1, up to 3% Mo, up to 0.20% REM, up to 0.20% Y, up to 0.10% Ca, and up to 0.10% Mg, with the balance being Fe and unavoidable impurities.

    摘要翻译: PCT No.PCT / JP94 / 01894 Sec。 371日期:1995年7月11日 102(e)日期1995年7月11日PCT 1994年11月10日PCT PCT。 出版物WO95 / 13405 日期1995年5月18日硬度至少为HV的高强度和伸长率的不锈钢由包含20体积%至95体积%的平均粒径不大于10微米的马氏体的双相结构形成,其余量 基本上是铁素体,钢包括重量百分比高达0.10%的C,高达2.0%的Si,高达4.0%的Mn,高达0.040%的P,高达0.010%的S,高达4.0%的Ni,从10.0% 至20.0%Cr,至多0.12%N,大于0.0050%至0.0300%B,至多0.02%O和至多4.0%Cu,并且任选地含有至多0.20%的Al,至多3%的Mo,至多0.20 %REM,至多0.20%Y,至多0.10%Ca,至多0.10%Mg,余量为Fe和不可避免的杂质。

    Stainless steel multifold pipe
    6.
    发明授权
    Stainless steel multifold pipe 失效
    不锈钢多层管

    公开(公告)号:US5458156A

    公开(公告)日:1995-10-17

    申请号:US143400

    申请日:1993-10-29

    摘要: A multifold pipe made by multiple rolling up and turning of a copper coated steel sheet into a multifold pipe, characterized in that said steel sheet is a cold rolled sheet of a super soft austenitic stainless steel comprising by weight: up to 0.05% of C, up to 1.0% of Si, up to 5.0% of Mn, from 9.0% to 15.0% of Ni, from 15.0% to 20.0% of Cr, up to 0.04% of N, up to 5.0% of Cu, the balance being Fe and unavoidable impurities, wherein the alloying elements are further adjusted so that both the two relations (1) and (2) noted below are satisfied:K=20.5+13.0.times.C+0.99.times.Si-1.1.times.Mn-Ni-0.4.times.Cu +0.4.times.Cr+117.1.times.N.ltoreq.19.5 (1)H=27.1+60.9.times.C+0.26.times.Si-Ni-0.79.times.Cu+0.68 .times.Cr+52.6.times.N.ltoreq.29.0 (2)The multifold pipe according to the invention is excellent in fluid tightness of its fused part and in corrosion resistance.

    摘要翻译: 一种多层管,其通过多层轧制和多层轧制而成的多层管,其特征在于,所述钢板为超软奥氏体不锈钢的冷轧板,其重量为C:0.05%以下, 高达1.0%的Si,至多5.0%的Mn,9.0%至15.0%的Ni,15.0%至20.0%的Cr,至多0.04%的N,至多5.0%的Cu,余量为Fe 和不可避免的杂质,其中进一步调整合金元素,使得满足以下两个关系式(1)和(2):K = 20.5 + 13.0xC + 0.99xSi-1.1xMn-Ni-0.4xCu + 0.4xCr + 117.1×N

    Grinding machine with a steady rest
    7.
    发明授权
    Grinding machine with a steady rest 失效
    磨床平稳休息

    公开(公告)号:US4711054A

    公开(公告)日:1987-12-08

    申请号:US924777

    申请日:1986-10-30

    摘要: In a numerical control grinding machine using a grinding wheel made of cubic boron nitride, a computerized numerical controller controls the infeed movement of a wheel head to effect a rough grinding and a first fine grinding on a rotating cylindrical workpiece by the grinding wheel and to halt the first fine grinding in response to a sizing signal from a sizing device which measures the diameter of the workpiece being ground. At the halt of the first fine grinding, the numerical controller advances rest jaws to press the workpiece upon the grinding wheel until another sizing signal is issued from the sizing device. Until the number of the workpieces ground after each truing operation reaches a predetermined number, the numerical controller increase the infeed rate of the grinding wheel in each of the rough and first fine grindings toward a desired infeed rate on a step-by-step basis. Further, the numerical controller diminishes a set size which determines the time point to issue the first-mentioned sizing signal from the sizing device, toward a desired set size on a step-by-step basis with the increases in number of the workpiece ground after each truing.

    摘要翻译: 在使用由立方氮化硼制成的砂轮的数控磨床中,计算机化数值控制器控制砂轮头的进料运动,以通过砂轮对旋转的圆柱形工件进行粗磨和第一次细磨,并停止 响应于来自测量被研磨的工件的直径的施胶装置的施胶信号的第一次细研磨。 在第一次精细磨削停止时,数字控制器前进静止爪,将工件压在砂轮上,直到从定型装置发出另一个尺寸信号。 在每次修整操作达到预定数量之后研磨的工件数量之前,数值控制器将粗磨和第一细磨中的每个粗磨中的砂轮的进料速率逐步地朝着期望的进给速度增加。 此外,数字控制器减小设定的尺寸,该设定尺寸决定了从尺寸调节装置发出首先提到的尺寸信号的时间点,随着工件接地数量的增加而逐步地朝向期望的设定尺寸 每个修饰。

    Nitrogen-containing metal powder, production process thereof, and porous sintered body and solid electrolytic capacitor using the metal powder
    9.
    发明授权
    Nitrogen-containing metal powder, production process thereof, and porous sintered body and solid electrolytic capacitor using the metal powder 有权
    含氮金属粉末及其制造方法,使用金属粉末的多孔烧结体和固体电解电容器

    公开(公告)号:US06432161B1

    公开(公告)日:2002-08-13

    申请号:US09626079

    申请日:2000-07-26

    IPC分类号: B22F926

    摘要: An object of the present invention is to provide nitrogen-containing metallic powder at high productivity, which powder contains a metal such as niobium or tantalum containing nitrogen uniformly, and enables production of an anode electrode that has high specific capacitance and low leakage current and that exhibits excellent reliability for a prolonged period of time. There is provided nitrogen-containing metallic powder which is a solid solution containing 50-20,000 ppm nitrogen, in which the metal that constitutes the metallic powder is niobium or tantalum. The nitrogen-containing metallic powder is produced through the process in which while a metallic compound is reduced with a reducing agent, a nitrogen-containing gas is introduced into a reaction system to thereby form metal, and nitrogen is simultaneously incorporated into metal. A porous sintered body comprising the nitrogen-containing metallic powder and a solid electrolytic capacitor comprising the powder have low leakage current and exhibit excellent reliability for a prolonged period of time.

    摘要翻译: 本发明的目的是以高生产率提供含氮金属粉末,该粉末含有均匀的含有氮的铌或钽的金属,能够制造具有高比电容和低漏电流的阳极电极, 在长时间内具有出色的可靠性。 提供含有金属粉末,其为含有50-20,000ppm氮的固溶体,其中构成金属粉末的金属为铌或钽。 通过以还原剂还原金属化合物的方法制备含氮金属粉末,将含氮气体引入反应体系中,从而形成金属,并且氮同时并入金属中。 包含含氮金属粉末的多孔烧结体和包含粉末的固体电解电容器具有低漏电流并且在长时间内显示出优异的可靠性。

    Method and machine for grinding
    10.
    发明授权
    Method and machine for grinding 失效
    研磨方法和机器

    公开(公告)号:US5228241A

    公开(公告)日:1993-07-20

    申请号:US760931

    申请日:1991-09-17

    IPC分类号: B24B5/01 B24B5/04

    CPC分类号: B24B5/04

    摘要: A machine for grinding a cylindrical surface and the end surface of a shoulder portion, both formed on a workpiece, using an angular grinding wheel. The end surface is perpendicular to the cylindrical surface. The grinding wheel has a first outer surface parallel to the axis of the workpiece and a second outer surface perpendicular to the first outer surface. The first outer surface has a cylinder-grinding parallel surface and a cylinder-grinding tilted surface. The parallel surface has a generatrix parallel to the generatrix of the cylindrical surface to be ground. The tilted surface is continuous with the parallel surface and has a generatrix tilted away from the generatrix of the cylindrical surface. The second outer surface has a shoulder-grinding parallel surface and a shoulder-grinding tilted surface continuous with this parallel surface. The shoulder-grinding parallel surface has a generatrix parallel to the end surface of the shoulder portion. The shoulder-grinding tilted surface has a generatrix tilted away from the end surface of the shoulder portion. The grinding wheel is fed into the shoulder portion from a given position located radially inside the end surface. Then, the wheel is moved radially outwardly to grind the end surface. Subsequently, the wheel is moved relative to the workpiece along the generatrix of the cylindrical surface away from the end surface to grind the cylindrical surface.