CONDUCTIVE POWDER, PRODUCTION METHOD THEREOF, AND LAMINATED CERAMIC CAPACITOR

• Main Authors: LEE KYUNG RYUL, CHOE HAN-KYU, BAE DAE WOONG, KIM SUN JUNG, KIM JIN WOO, DONG HYUN SUNG, KIM JEONG RYEOL
• Format: Patent
• Language: English; Japanese
• Published: 23.04.2015
• Subjects: BASIC ELECTRIC ELEMENTS; CABLES; CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE; CASTING; CONDUCTORS; ELECTRICITY; INSULATORS; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; PERFORMING OPERATIONS; POWDER METALLURGY; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES; TRANSPORTING; WORKING METALLIC POWDER

PROBLEM TO BE SOLVED: To provide a conductive powder which can suppress shrinkage of an internal electrode efficiently, its production method and a laminated ceramic capacitor.SOLUTION: A conductive powder comprises a metal powder and an additive coating layer which is formed on the surface of the metal powder and has a thickness of 0.02R-0.35R, where R is the average particle size of the metal powder. The metal powder contains at least one of silver, gold, copper, nickel, cobalt, platinum, palladium and their alloys and has an average particle size of 100 nm. The additive coating layer contains at least one of barium, manganese, magnesium, dysprosium, vanadium and yttrium and an amorphous metal. 【課題】内部電極の収縮を効率的に制御できる導電性粉末、その製造方法、及び積層セラミックキャパシタ提供する。【解決手段】金属粉末と、上記金属粉末の表面に形成され、前記金属粉末の平均粒径をＲとしたときに、０．０２Ｒ〜０．３５Ｒの厚さを有する添加剤コーティング層と、を含む。前記金属粉末は銀、金、銅、ニッケル、コバルト、白金、パラジウム、及びこれらの合金からなる群から選択される一つ以上を含み、平均粒径は１００ｎｍ以下である。前記添加剤コーティング層は、バリウム、マンガン、マグネシウム、ジスプロシウム、バナジウム、及びイットリウムのうち一つ以上を含み、非晶質金属を含む導電性粉末。【選択図】図１