GREEN BODY, PIEZOELECTRIC COMPONENT AND METHOD FOR THE PRODUCTION OF A PIEZOELECTRIC COMPONENT

摘要

The invention relates to a green body, a piezoelectric component (10) and a method for the production of a piezoelectric component (10) in the form of a multilayer structure having at least one piezoelectric ceramic layer (11) and at least one electrode layer (12) connected to the piezoelectric ceramic layer (11). A green body is initially produced, wherein at least one electrode layer (12) is placed on at least one piezoelectric green ceramic layer. The resulting stack (16) for producing the piezoelectric component (10) is then subjected to at least one additional finishing step, for instance a sintering step. In order to produce piezoelectric components (10) with a long service life and high reliability, the at least one piezoelectric ceramic layer (11) is not configured as an individual layer but in the form of a first ceramic partial layer (13) and at least a second ceramic partial layer (14, 15). The ceramic partial layers (13, 14, 15) advantageously have a thickness which is smaller than the thickness of the piezoelectric ceramic layer (11) after carrying out the finishing step. In the production of the green body, a first green ceramic partial layer that can carry an electrode layer (12) is advantageously placed on at least one second green ceramic partial layer that does not carry an electrode layer.