Patent ID: 6627104
Filing Date: 2003-09-30
Classification: C04B

Abstract:
A method of producing a PbO-based electroceramic material which comprises:mixing constituent oxides, including Pbo, in an appropriate ratio as required by the electroceramic material; and forming an electroceramic powder of perovskite structure by mechanical activation or a combination of mechanical and thermal activations of the mixed oxides, wherein the mechanical activation is produced by shaking an activation chamber having a wear-resistant vial with one or more stainless steel balls inside at a frequency in the range of up to 3000 cycles per minute, and the electroceramic material is in powdered form having a particle size in the range of 5 to 65 nm, and the PbO-based electroceramic material comprises a relaxor ferroelectric or piezoelectric.