SILVER POWDER AND METHOD FOR PRODUCING SILVER POWDER

To provide: a silver powder suitable as a conductive filler for a conductive paste that can be fired at low temperature; and a method for producing the silver powder.SOLUTION: A method for producing a silver powder comprises: an azole addition step in which an azole is added to an aqueous silver amm...

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Bibliographic Details
Main Author SUGAWARA KIMIKO
Format Patent
LanguageEnglish
Japanese
Published 30.03.2023
Subjects
CASTING
MAKING METALLIC POWDER
MANUFACTURE OF ARTICLES FROM METALLIC POWDER
PERFORMING OPERATIONS
POWDER METALLURGY
TRANSPORTING
WORKING METALLIC POWDER
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Summary:To provide: a silver powder suitable as a conductive filler for a conductive paste that can be fired at low temperature; and a method for producing the silver powder.SOLUTION: A method for producing a silver powder comprises: an azole addition step in which an azole is added to an aqueous silver ammine complex solution to obtain a first liquid; a reducing agent addition step in which a reducing agent is added to the first liquid to obtain a second liquid; and a fatty acid addition step in which a fatty acid is added to the second liquid to obtain a third liquid, wherein the fatty acid is an unsaturated fatty acid containing two or more double bonds.SELECTED DRAWING: None 【課題】低温焼成が可能な導電性ペーストの導電性フィラーに適した銀粉及びその製造方法を提供する。【解決手段】銀粉の製造方法は、銀アンミン錯体水溶液にアゾール類を添加して第一液を得るアゾール添加工程と、第一液に還元剤を添加して第二液を得る還元剤添加工程と、第二液に脂肪酸を添加して第三液を得る脂肪酸添加工程と、を含み、脂肪酸は、二つ以上の二重結合を含む不飽和脂肪酸である。【選択図】なし
Bibliography:Application Number: JP20220145586