Tantalum and tantalum nitride powder mixtures for electrolytic capacitors substrates
    1.
    发明授权
    Tantalum and tantalum nitride powder mixtures for electrolytic capacitors substrates 有权
    用于电解电容器基板的钽和氮化钽粉末混合物

    公开(公告)号:US06554884B1

    公开(公告)日:2003-04-29

    申请号:US09695512

    申请日:2000-10-24

    IPC分类号: B22F100

    摘要: A process for producing sintered pellets made from blends of refractory metal and refractory metal nitride powders were found to have a higher fraction of intra-agglomerate pores than those made from the refractory metal or refractory metal nitride alone resulting in improved capacitor grade powders, anodes and finished capacitors therefrom. The pellet porosity and total intrusion volume maximizes when the mixture is in the 50-75 W/W % refractory metal nitride range. The total pellet pore surface area was found to be relatively independent of refractory metal nitride concentration above 50%. A substrate consisting of a 50/50 or 25/75 W/W % refractory metal/refractory metal nitride powder mixture should produce solid capacitors with higher capacitance recovery and lower ESR.

    摘要翻译: 发现由难熔金属和难熔金属氮化物粉末的共混物制成的烧结颗粒的方法具有比由难熔金属或难熔金属氮化物单独制成的凝聚细孔更高的部分,导致改进的电容器级粉末,阳极和 成品电容器。 当混合物在50-75W / W%难熔金属氮化物范围内时,颗粒孔隙率和总侵入体积最大化。 发现总颗粒孔表面积相对独立于高于50%的难熔金属氮化物浓度。 由50/50或25/75 W / W%的耐火金属/难熔金属氮化物粉末混合物组成的基体应产生具有较高电容恢复率和较低ESR的固体电容器。

    Tantalum and tantalum nitride powder mixtures for electrolytic capacitors substrates
    4.
    发明授权
    Tantalum and tantalum nitride powder mixtures for electrolytic capacitors substrates 失效
    用于电解电容器基板的钽和氮化钽粉末混合物

    公开(公告)号:US06716389B2

    公开(公告)日:2004-04-06

    申请号:US10280295

    申请日:2002-10-25

    IPC分类号: B22F300

    摘要: A process for producing sintered pellets made from blends of refractory metal and refractory metal nitride powders were found to have a higher fraction of intra-agglomerate pores than those made from the refractory metal or refractory metal nitride alone resulting in improved capacitor grade powders, anodes and finished capacitors therefrom. The pellet porosity and total intrusion volume maximizes when the mixture is in the 50-75 W/W % refractory metal nitride range. The total pellet pore surface area was found to be relatively independent of refractory metal nitride concentration above 50%. A substrate consisting of a 50/50 or 25/75 W/W % refractory metal/refractory metal nitride powder mixture should produce solid capacitors with higher capacitance recovery and lower ESR.

    摘要翻译: 发现由难熔金属和难熔金属氮化物粉末的共混物制成的烧结颗粒的方法具有比由难熔金属或难熔金属氮化物单独制成的凝聚细孔更高的部分,导致改进的电容器级粉末,阳极和 成品电容器。 当混合物在50-75W / W%难熔金属氮化物范围内时,颗粒孔隙率和总侵入体积最大化。 发现总颗粒孔表面积相对独立于高于50%的难熔金属氮化物浓度。 由50/50或25/75 W / W%的耐火金属/难熔金属氮化物粉末混合物组成的基体应产生具有较高电容恢复率和较低ESR的固体电容器。

    Removal of binder from Ta products
    8.
    发明授权
    Removal of binder from Ta products 失效
    从Ta产品中去除粘合剂

    公开(公告)号:US5470525A

    公开(公告)日:1995-11-28

    申请号:US269580

    申请日:1994-07-01

    摘要: Tantalum anode pellets or tantalum powders are treated to remove carbon content (mostly attributable to binders used in pressing the powders to pellet form and/or sintering of the pellets) by an aqueous leach at 50.degree.-200.degree. F. in lieu of the conventional complex distillation/decomposition methods.

    摘要翻译: 处理钽阳极丸或钽粉以除去碳含量(主要归因于用于将粉末压制成颗粒形式和/或烧结颗粒的粘合剂)通过在-50°-200°F的水性浸出代替常规 复合蒸馏/分解方法。