MANUFACTURING METHOD FOR LAMINATED PIEZOELECTRIC BODY

摘要

PROBLEM TO BE SOLVED: To provide a laminated piezoelectric body in which a deformation and a crack are not occurred because the baking shrinkage difference of the forming section and non-forming section of a laminated structure at a temperature previously measured by a thermomechanical analyzer is set for 8% or less.

SOLUTION: The laminated piezoelectric body is obtained by alternately laminating green sheets composed of a piezoelectric ceramic composition using a lead oxide as one of main components and internal electrode paste using Ag as the main component. In the part, the baking shrinkage difference of the forming section and non-forming section of the laminated structure is set for 8% or less by adding the piezoelectric ceramic composition and a high melting-point oxide to the internal electrode paste, and the deformation and the crack are not occurred.

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