Abstract
A high-energy ball milling process has been used to prepare lead lanthanum zirconate titanate (PLZT7/60/40) powders with different excess PbO levels. The microstructure development and the electrical properties of the PLZT ceramics derived from the synthesized powders were investigated. The present results demonstrate that an excess PbO exhibits a negative influence on the electrical properties of the PLZT ceramics, even though it promoted the densification of the PLZT ceramics at low temperature. Fully dense PLZT ceramics with a piezoelectric coefficient ( d 33) of 702 pC/N were achieved by sintering the powders without excess PbO at 1150 °C for 1 h. It can be concluded that excess PbO is not necessary for lead-containing ceramics produced by a high-energy ball milling process.
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