| 摘要 |
PROBLEM TO BE SOLVED: To provide an electroconductive electrolessly plated powder which is scarcely deteriorated in electric conductivity after being aged according to the humidity resistance test. SOLUTION: This powder is prepared by applying 0.03-65wt.%, based on the core particle, gold or palladium to the outermost surface of a core particle comprising a metallic particle, desirably a nickel particle and having a mean particle diameter of 1-50μm by the electroless plating process. It has an aspect ratio of 2 or below, an electric resistance of 0.1Ω.cm or below after being aged for 500hr and a variation rate of resistanceΩv=|Ωa-Ωb|/Ωa<=20 (whereinΩa is the electric resistance before the aging test, andΩb is that after the test).
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