Production method of zirconia - alumina compound ceramic material, zirconia - alumina compound granulation powder, zirconia beads

摘要

It possesses resistance abrasiveness and the hardness which are superior, it produces the zirconia - alumina compound ceramic material which controls the grain spilling in the edge part. The zirconia - alumina compound ceramic material in this inventing, as the zirconia particle is dispersed into the alumina particle, has the composite structure where the alumina particle is dispersed into the zirconia particle. 1st phase consists of the zirconia particle which includes ceria, 2nd phase consists of the alumina particle. Mean diameter the alumina powder of 0.1 millimicrons or more and mean diameter the alumina powder of 0.01 - 0.1 millimicrons uses in ratio of the mass ratio 85:15 - the 65:35 as an alumina powder in order to form the alumina particle of the aforementioned 2nd phase.