Epcos Ag

Marlene Fritz

Marion Ottlinger

Bernhard Döllgast

Wolfgang Athenstaedt

A multi-layered structural element and a method for producing a multi-layered structural element are disclosed. In an embodiment dielectric green sheets, at least one ply containing an auxiliary material which contains at least one copper oxide and layers containing electrode material are provided and arranged alternately one above another. These materials are debindered and sintered. The copper oxide is reduced to form the copper metal and the at least one ply is degraded during debindering and sintering.

Method for producing a multi-layered structural element, and a multi-layered structural element produced according to said method

Provision is made of a method for producing a piezoelectric multilayer component (), in which piezoelectric green sheets, at least one ply () containing an auxiliary material having a first and a second component and layers () containing electrode material are arranged one above another alternately and sintered, wherein, during the sintering, the first and second components of the auxiliary material chemically react, and the at least one ply () containing the auxiliary material is degraded. In addition, provision is made of a piezoelectric multilayer component () comprising a plurality of alternating layers of electrode material () and piezoelectric ceramic and at least one layer () of auxiliary material having a breaking load which is reduced compared to the other layers of electrode material, wherein, in addition to the first and second components, the auxiliary material comprises a fifth component, which, at the preferred sintering temperatures for the piezoelectric material, in particular at most 1050&#xb0; C., at most has a negligible sintering activity and does not react with the piezoelectric material used. Finally, the use of ZrO, BaTiOor a mixture thereof in the auxiliary material layer of a piezoelectric multilayer component for reducing the breaking stress is described.

Method for producing a piezoelectric multilayer component, piezoelectric multilayer component containing an auxiliary material, and use of an auxiliary material for setting the breaking stress of a piezoelectric multilayer component

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Graz, Austria

Marlene Fritz