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US 2010/0141098 A1Published application
Piezoelectric Multilayer Component
AssigneeEpcos AG
InventorsBernhard Doellgast, Johann Schmidt
Life of this patent
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Abstract
A piezoelectric multilayer component has a base body including a stack of dielectric layers, electrode layers and at least one predetermined breaking layer. The predetermined breaking layer is arranged at least for the most part in an inactive zone of the multilayer component and cracks under specific tensile loads.
Claims20
A piezoelectric multilayer component, comprising a base body comprising a stack of dielectric layers, electrode layers and at least one predetermined breaking layer, wherein
- the predetermined breaking layer is arranged at least for the most part in an inactive zone, and wherein
- the predetermined breaking layer cracks under specific tensile loads.
A piezoelectric multilayer component, comprising:
- a base body;
- a plurality of dielectric layers disposed within the base body;
- a plurality of electrode layers disposed within the base body, the electrode layers and the dielectric layers being arranged in a stack;
- at least one predetermined breaking layer arranged at least for the most part in an inactive zone of the base body, wherein the predetermined breaking layer cracks under specific tensile loads.
1 more element
A method for producing a piezoelectric multilayer component, the method comprising:
- forming a predetermined breaking layer by printing first piezoceramic sheets with a predetermined breaking material having a microstructure that becomes mechanically unstable during production of the multilayer component, and
- providing first piezoceramic sheets and second piezoceramic sheets having electrode layers so as to form a stack in such a way that an area of a predetermined breaking layer in orthogonal projection has no area of overlap with an adjacent electrode layer, and
- sintering the stack to form a monolithic multilayer component.
Dependencies are inferred from the claim text.