ELECTRODE FOIL, MANUFACTURING METHOD FOR THE SAME AND ELECTROLYTIC CAPACITOR

• Main Authors: ISHIMOTO HITOSHI, SHOJI MASASHI, SHIMASAKI YUKIHIRO, KURITA JUNICHI, NOINE KEIJI, ISHIKAWA KAORI
• Format: Patent
• Language: English; Japanese
• Published: 12.05.2016
• Subjects: BASIC ELECTRIC ELEMENTS; CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE; CASTING; ELECTRICITY; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; PERFORMING OPERATIONS; POWDER METALLURGY; TRANSPORTING; WORKING METALLIC POWDER

PROBLEM TO BE SOLVED: To provide an electrode foil that is excellent in adhesion between a metal base material and a porous layer in order to implement a small-size and large-capacity design of an electrolytic capacitor without degrading reliability.SOLUTION: An electrode foil has a metal base material, and a porous layer comprising a sintered body of valve action metal powder formed on the metal base material. The porous layer is constructed by valve action metal having a higher melting point than the metal base material or alloy of the valve action metal. The metal base material has alloy particles containing at least the component of the metal base material and the component of the porous layer.SELECTED DRAWING: Figure 1 【課題】信頼性を損なわずに、電解コンデンサの小形大容量化を実現するために、金属基材と多孔質層との密着性に優れた電極箔を得る。【解決手段】金属基材と、この金属基材上に形成された弁作用金属の粉末の焼結体からなる多孔質層とを備えた電極箔であって、前記多孔質層は、前記金属基材より融点が高い弁作用金属またはその合金から構成され、前記金属基材には、少なくとも前記金属基材の成分と前記多孔質層の成分とを含む合金粒子を有する電極箔。【選択図】図１