PIEZOELECTRIC CERAMIC MATERIAL INCLUDING PROCESSES FOR PREPARATION THEREOF AND APPLICATIONS THEREFOR

Abstract

This invention relates to new ceramic piezoelectric compositions having superior electrical properties, processes for the preparation of the new piezoelectric composition and applications for the new compositions. Specifically, a solid solution composition of 85.5-87.5 molar percent lead zinc niobate, 9.5-9.7 molar percent lead titanate and 3-5 molar percent of a barium titanate dopant or strontium titanate dopant has exhibited desirable electrical properties. This specific composition is well suited for use in a 3-1 connectivity composite, which can be used as a hydrophone. These compositions may be prepared by oxide sintering techniques utilizing extremely high purity materials, or alternatively, by a sol gel process.

Source: Google Patents

35 USC §181 Secrecy Order

Inventor

• 1ALEX E. BAILEY

Sensitive facility: Bethesda MD (defense contractors)