Process For Manufacturing Agglomerated Particles Of Tantalum, Mixed Tantalum Powder And Process For Manufacturing Same, Tantalum Pellet And Process For Manufacturing Same, And Capacitor

Process For Manufacturing Agglomerated Particles Of Tantalum, Mixed Tantalum Powder And Process For Manufacturing Same, Tantalum Pellet And Process For Manufacturing Same, And Capacitor

A method for producing agglomerated tantalum particles, comprising: a step for grinding secondary tantalum particles, which are obtained by reducing a tantalum salt, and adding water thereto to give a water-containing mass; a step for drying said water-containing mass to give a dry mass; a step for...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Venigalla Sridhar, Koenitzer John, Matsuoka Ryosuke, Noguchi Yoshikazu, Kataoka Eiji
Format: Patent
Sprache:eng
Schlagworte:
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
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Beschreibung
Zusammenfassung:A method for producing agglomerated tantalum particles, comprising: a step for grinding secondary tantalum particles, which are obtained by reducing a tantalum salt, and adding water thereto to give a water-containing mass; a step for drying said water-containing mass to give a dry mass; a step for sieving said dry mass to give spherical particles; and a step for heating said spherical particles. A mixed tantalum powder comprising a mixture of agglomerated tantalum particles (X) with agglomerated tantalum particles (Y), wherein said agglomerated tantalum particles (X) show a cumulative percentage of particles with particle size of 3 μm or less of 5 mass % or less after 25 W ultrasonic radiation for 10 min, while said agglomerated tantalum particles (Y) show a cumulative percentage of particles with particle size of 3 μm or less of 10 mass % or more after 25 W ultrasonic radiation for 10 min.