Patent ID: 6156259
Filing Date: 2000-12-05
Classification: C04B,H01L

Abstract:
A method of manufacturing a ceramic sintered body, comprising:molding a pre-fired piezoelectric ceramic material consisting essentially of lead zincate niobate (PZN) or lead zincate-niobate-lead titanate (PZN--PT) having a composition of xPb(Zn.sub.1/3 Nb.sub.2/3)O.sub.3 -(1-x)PbTiO.sub.3, where 0.7<x.ltoreq.1, into a powder mold;pre-sintering said powder mold at an atmospheric pressure and at a temperature of from 900.degree. C. to 1100.degree. C. to close pores; andsintering said pre-sintered powder mold by hot high pressure isostatic pressing (HIP) to manufacture a ceramic sintered piezoelectric body.