Carbon-coated metal powder, conductive paste containing carbon-coated metal powder and multilayer electronic component using same, and method for manufacturing carbon-coated metal powder

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United States of America Patent

PATENT NO 9943909
SERIAL NO

15037943

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Abstract

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A carbon-coated metal powder having few impurities, a narrower particle size distribution, and sintering properties is particularly suitable as a conductive powder of a conductive paste for forming internal conductors in a ceramic multilayer electronic component obtained by co-firing multilayered ceramic sheets and internal conductor layers; a conductive paste containing the carbon-coated metal powder; a multilayer electronic component using the conductive paste; and a method for manufacturing the carbon-coated metal powder. The carbon-coated metal powder has specific properties in TMA or ESCA measurements. The carbon-coated metal powder can be obtained by melting and vaporizing a metallic raw material in a reaction vessel, conveying the generated metal vapor into a cooling tube and rapidly cooling the metal vapor by endothermically decomposing a carbon source supplied into the cooling tube, and forming a carbon coating film on metal nuclei surfaces in parallel with generation of the metal nuclei.

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Patent Owner(s)

Patent OwnerAddress
SHOEI CHEMICAL INCTOKYO 163-0443

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Akimoto, Yuji Tosu, JP 34 283
Iwasaki, Mineto Tosu, JP 8 72
Matsuo, Akiko Tosu, JP 5 22
Tanaka, Hideki Tosu, JP 448 5293

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