Process for making a sintered body of alumina and partially stabilized zirconia and method of preparing a powder for sintering.

摘要

A powder for sintering is prepared by the wet mixing of a finely and uniformly divided alumina powder of high purity having a primary particle diameter not exceeding 0.15 micron and an average particle diameter not exceeding 0.3 micron, and a partially stabilized zirconia powder of high purity having an average particle diameter not exceeding 0.3 micron. After granulation and molding, the mixed powder is sintered at a temperature of 1300 DEG C to 1500 DEG C to make a sintered body having an average grain size not exceeding 0.7 micron.