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    • 90. 发明申请
    • CAPACITOR ELEMENT
    • 电容元件
    • US20150194268A1
    • 2015-07-09
    • US14409205
    • 2013-04-09
    • SHOWA DENKO K.K.
    • Kazumi NaitoShouji Yabe
    • H01G9/042H01G9/052H01G9/07H01G9/15
    • H01G9/042H01G9/04H01G9/052H01G9/07H01G9/15Y10T29/417
    • A capacitor element including at least an anode body composed of a sintered compact containing tungsten as a main component, a dielectric layer with a smooth surface formed by chemical conversion of the surface of the anode body, and a semiconductor layer laminated on the dielectric layer. The capacitor is obtained by a production method which includes the steps of chemically converting the surface layer of the tungsten powder sintered compact into the dielectric layer in an aqueous solution containing 0.05 to 12% by mass of an oxidant composed of an oxygen-containing compound at a solution temperature of 62° C. or less, and removing all or most of water adhering to the inner surface of pores at a temperature of less than the boiling point of water, followed by drying at a temperature of not less than the boiling point of water.
    • 一种电容器元件,至少包括由以钨为主要成分的烧结体构成的阳极体,通过阳极体表面的化学转化而形成的具有平滑表面的电介质层,以及层叠在电介质层上的半导体层。 该电容器是通过以下方法获得的,该方法包括以下步骤:将钨粉末烧结体的表面层化学转化成含有0.05〜12质量%的由含氧化合物构成的氧化剂的水溶液, 溶液温度为62℃以下,在小于沸点的温度下除去附着在孔内表面的全部或大部分水,然后在不低于沸点的温度下干燥 的水。