METHOD FOR MANUFACTURING COPPER POWDER, COPPER POWDER, ELECTROCONDUCTIVE PASTE, AND LAMINATED CERAMIC ELECTRONIC COMPONENT

摘要

PROBLEM TO BE SOLVED: To provide a method for manufacturing a copper powder which is superior in dispersibility and heat contraction and has a high sintering-initiation temperature, to provide the copper powder manufactured by the method, an electroconductive paste using the copper powder and a laminated ceramic electronic component provided with an electrode formed by the use of the conductive paste.;SOLUTION: This manufacturing method comprises reducing a raw liquid containing copper salts, calcium compounds and water with a hydrazine-based reducing agent, to precipitate the copper powder containing calcium. A ratio (Ca/(Cu+Ca)) of calcium (Ca) to copper (Cu) in the raw liquid is in a range of 0.05-1.0 wt.%.;COPYRIGHT: (C)2003,JPO