Microstructure and properties of plasma sprayed lead zirconate titanate (PZT) ceramics

Abstract

Lead zirconate titanate (PZT) was plasma sprayed onto various substrates of different character. Additionally, a free-standing body made by plasma spraying was investigated. X-ray diffraction analyses of a decomposition of the as-sprayed coating products detected components of the PT-PZ system as well as binary oxides-PbO and ZrO 2 . Due to the comparatively complex phase character, the Curie temperature monitored by DTA, had a smeared appearance without pronounced maxima. The corresponding electrical properties are comparable with those typically observed for CaTiO 3 , but are worse than the normal values of bulk PZT due to defective stoichiometry.