COPPER POWDER FOR ELECTROCONDUCTIVE PASTE, AND ELECTROCONDUCTIVE PASTE

摘要

PROBLEM TO BE SOLVED: To provide a copper powder which does not impair the balance of any of oxidation resistance and electroconductivity though the particle size is very small, and further a copper powder containing little oxygen for an electroconductive paste, of which the variation in the shapes and the particle sizes is small.

SOLUTION: The copper powder for the electroconductive paste contains 0.05-10 atom.% Bi inside the particle and also contains 0.01-0.3 atom.% P (phosphorus) inside the particle.

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