Patent ID: 8273807

Claim:
Ceramic powder having a multiple peak-frequency type particle size distribution which has at least two peaks, as determined according to the laser diffraction-scattering type particle size distribution analyzer, wherein the maximum particle size observed for the first peak falls within the range of from 12 to 30 μm; wherein the maximum particle size observed for the second peak falls within the range of from 2 to 7 μm; wherein the content of the particles having a particle size of greater than 7 μm and less than 12 μm is 8 to 13% by mass; wherein the content of the particles having a particle size falling within the range of 12 to 30 μm is 39 to 48% by mass; wherein the content of the particles having a particle size falling within the range of 2 to 7 μm is 17 to 26% by mass; and wherein the ratio (F2/F1) of the frequency value F2 of the maximum particle size observed for the second peak to the frequency value F1 of the maximum particle size observed for the first peak ranges from 0.6 to 1.0.