METHOD OF PREPARING FERROELECTRIC CERAMICS

摘要

A process for preparing strengthened ferroelectric ceramics, which comprises heat treatment of sintered ceramics after sintering of ceramic materials at a temperature range from about 100 DEG to about 400 DEG C. lower than the final sintering temperature of ceramics, holding it for about 1 to about 60 hrs, and then cooling it at a cooling rate from about 300 DEG to about 10 DEG C. per hour. Strengthened ferroelectric ceramics are obtained among the following ferroelectric ceramic compositions: