SILVER POWDER AND METHOD FOR PRODUCING THE SAME

PROBLEM TO BE SOLVED: To provide a silver powder which, when being produced into a paste, has a suitable viscosity range, is easy to knead, and is prevented from forming flakes; and to provide a method for producing the same.SOLUTION: The silver powder is characterized in that it has on its surface...

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Bibliographic Details
Main Authors NIHEI TOMOMICHI, OKADA MIKA, KAWAKAMI YUJI
Format Patent
LanguageEnglish
Published 06.06.2013
Subjects
BASIC ELECTRIC ELEMENTS
CABLES
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
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Summary:PROBLEM TO BE SOLVED: To provide a silver powder which, when being produced into a paste, has a suitable viscosity range, is easy to knead, and is prevented from forming flakes; and to provide a method for producing the same.SOLUTION: The silver powder is characterized in that it has on its surface a coating layer containing two or more surface treatment agents, and that when the cumulative distribution curve is determined by taking as 100% the total volume of the groups measured by a laser diffraction/scattering method, the particle diameter Dcorresponding to a point of 50% on the curve is 0.5-2.0 μm, and the standard deviation (SD) of the volume-based particle size distribution, defined by formula (1): SD=(D-D)/2 is 0.3-1.0 μm. [wherein Dis the particle diameter corresponding to a point of 84% on the curve; and Dis the particle diameter corresponding to a point of 16% on the curve].
Bibliography:Application Number: JP20110252699