Patent ID: 8053495

Claim:
A ceramic powder, comprising first particles having a maximum particle size of from 40 to 80 μm, second particles having a maximum particle size of from 3 to 8 μm, wherein an amount of particles having a particle size of from 20 to less than 40 μm is not more than 20% by mass, relative to the total mass of the ceramic powder, said ceramic powder has a chemical absorption amount of ammonia ranging from 0.1 to 1.8 μmole/g, and said ceramic powder has a multi-peak frequency distribution pattern having at least two peaks as a particle size distribution as determined using a laser diffraction-scattering type particle size-analyzer, the maximum particle size for the first peak ranging from 40 to 80 μm and that for the second peak ranging from 3 to 8 μm.