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AssigneeMitsui Mining & Smelting Co., Ltd.
InventorsToshihiro Kohira, Takafumi Sasaki, Shinji Aoki, Takahiko Sakaue
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The disclosed composite copper particle includes a core particle including copper, and a coating layer including a copper-tin alloy and formed on the surface of the core particle, the composite copper particle having a particle diameter at 50% cumulative volume in the particle size distribution of 0.1 to 10.0 μm. The alloy is preferably CuSn. The ratio of tin to the the composite copper particle is preferably 3.0 to 12.0 mass %. The composite copper particle is suitably obtained by a method including a step of mixing a reducing agent for tin and an aqueous slurry containing a tin source compound and core particles which include copper, to form a coating layer including a copper-tin alloy on a surface of the core particles.
A composite copper particle comprising a core particle including copper, and a coating layer including a copper-tin alloy and formed on the surface of the core particle, the composite copper particle having a particle diameter at 50% cumulative volume in the particle size distribution of 0.1 to 10.0 μm.
A method for producing composite copper particles comprising a step of mixing a reducing agent for tin and an aqueous slurry containing a tin source compound and core particles which include copper, to form a coating layer comprising a copper-tin alloy on a surface of the core particles.
Dependencies are inferred from the claim text.