| 摘要 |
An improved lead calcium titanate piezoelectric sintered body is produced by sintering in air at 1000 DEG C - 1200 DEG C a calcined mixture of oxides or oxide compounds in amounts adapted to form a composition of the formula Pb1-xCaxTi1-y(Co1/2W1/2)yO3 + from 0.005 to 0.02(A) where A is at least one of MnO, MnO2, NiO and Nb2O3, wherein x = 0.3-0.4 and 0.04 < y @</=@ 0.06. c |
