| 摘要 |
PROBLEM TO BE SOLVED: To provide a conductive particle that is excellent in a solder diffusing property and improves wear resistance by the dispersion. SOLUTION: This particle is made by forming a conductive metal layer having a thickness of 0.1-5μm constituted of Au, Ag, Cu, Al and their alloy, and on top of it, a reaction suppressing layer having a diameter of 0.05-0.5μm constituted of Pt, Pd or their alloy on a ceramic particle having a particle diameter of not more than 50μm by a physical deposition method. Then, the outermost layer is coated with Ni, Cu and their alloy as a dispersion accelerating layer having a thickness of 0.1-2μm, and there is formed a hard conductive particle of which crystal lattice diameter calculated from the half-value width of an X-ray diffraction peak of the three layers is not more than 300 nm.
|
