Epcos Ag

Tdk Electronics Ag

Siemens Matsushita Components Gmbh & Co Kg

Siemens Aktiengesellschaft

Siemens Matsushita Gmbh & Co. Kg

Adalbert Feltz

Heinz Florian

Alexander Glazunov

Michael Schossmann

Marion Ottlinger

Harald Kastl

Peter Sedlmaier

Sigrid Gansberger

Claus Cernoch

Franz Schrank

Gerald Kloiber

Patrick Schmidt-Winkel

Sigrid Ragossnig

Danilo Neuber

Anke Althoff

Friedrich-Franz Rosc

Friederike Lindner

Ralph Kriegel

The invention relates to a ceramic material, comprising lead zirconate titanate, which additionally contains K and optionally Cu. The ceramic material can be used in an electroceramic component, for example a piezoelectric actuator. The invention also relates to methods for producing the ceramic material and the electronic component.

Ceramic material, method for producing the ceramic material, and electroceramic component comprising the ceramic material

A method for producing a piezoelectric component is disclosed. In an embodiment, the method includes producing a ceramic precursor material of the general formula PbV&#x2033;BaSr[(TiZr)WRE]O, where RE is a rare earth metal and V&#x2033; is a Pb vacancy, mixing the ceramic precursor material with a sintering aid, forming a stack which includes alternating layers including the ceramic precursor material and a layer including Cu and debindering and sintering the stack thereby forming the piezoelectric component having Cu electrodes and at least one piezoelectric ceramic layer including PbV&#x2033;CuBaSr[(TiZr)WRE]O, where 0&#x2264;x&#x2264;0.035, 0&#x2264;y&#x2264;0.025, 0.42&#x2264;z&#x2264;0.5, 0.0045&#x2264;a&#x2264;0.009, 0.009&#x2264;b&#x2264;0.011, and 2a&#x3e;b, p&#x2264;2a&#x2212;b.

Piezoelectric component and method for producing a piezoelectric component

A piezoelectric component has at least one piezoelectric ceramic layer and at least one electrode adjacent the piezoelectric ceramic layer. The piezoelectric ceramic layer has a piezoelectric ceramic material of the general formula PbV&#x2033;CuBaSr[(TiZr)bWRE]O, where 0&#x2266;x&#x2266;0.035, 0&#x2266;y&#x2266;0.025, 0.42&#x2266;z&#x2266;0.5, 0.0045&#x2266;a&#x2266;0.009, 0.009&#x2266;b&#x2266;0.011, 2a&#x3e;b, p&#x2266;2a&#x2212;b, RE is a rare earth metal, and V&#x2033; is a Pb vacancy.

The invention relates to a cobalt-free NTC ceramic having the composition Ni'Cu&#x2032;Co&#x2032;MnOwhere 0.09&#x3c;a&#x2032;&#x3c;0.6, 0.02&#x3c;b&#x2032;&#x3c;0.65, 0.12&#x3c;c&#x2032;&#x3c;0.58 and 1.6&#x3c;d&#x2032;&#x3c;2.1. The invention further relates to a method for producing a cobalt-free NTC ceramic, the composition of which is derived from a cobalt-containing NTC ceramic of general formula NiCuCoMnOwhere 0.09&#x3c;a&#x3c;0.6, 0.02&#x3c;b&#x3c;0.65, 0.12&#x3c;c&#x3c;0.58 and 1.6&#x3c;d&#x3c;2.1, wherein Co is replaced by Zn.

Cobalt-free NTC ceramic and method for producing a cobalt-free NTC ceramic

A piezoelectric ceramic material has the general formula: PDZ(PbO)where: 0&#x3c;c&#x2266;0.025; 0&#x2266;d&#x2266;0.05; 0&#x2266;w&#x2266;0.05; where P stands for a compound having the formula [PbAg][(ZrTi)Cu]O, where 0.50&#x2266;1&#x2212;y&#x2266;0.60; 0&#x3c;u&#x2266;0.0495; 0&#x2266;v&#x2266;0.02, and D stands for a component of the general formula [(MO)(MO)][NbO], where Mstands for BaSr, where 0&#x2266;t&#x2266;1, Mstands for Sr and/or Ca, and 0&#x3c;p&#x3c;1 and &#x2154;&#x3c;a&#x3c;1 and Z stands for a compound of the general formula: Pb(LR)Owhere L is present in the oxidation state II or III, and R is present in the oxidation state VI or V, and: Lis selected from among Fe, Mg, Co, Ni and Cu in combination with R=W, where 1=&#xbd; and r=&#xbd;, or Lis selected from among Fe, Cr and Ga in combination with R=Nb, Ta or Sb, where 1=&#xbd; and r=&#xbd;, or Lis selected from among Fe, Cr and Ga in combination with R=W, where 1=&#x2154; and r=&#x2153;.

Piezoelectric ceramic material, method for the production thereof, and multilayer component

A ceramic material includes first and second ceramic materials. The first ceramic material has a perovskite structure and defines a host lattice. The first ceramic material contains lead, zirconium and titanium, e.g., lead zirconate titanate. The second ceramic material has a cryolite structure. The ceramic material may be part of a piezo-actuator containing ceramic layers formed of the ceramic material.

Ceramic material

Ceramic material of the general formula: [SEM][CrRL]O, wherein SE stands for one or more rare earth metals, Mstands for one or more metals of the oxidation state +II, L stands for Al and/or Ga, R stands for one or more metals selected from Fe, Zn, Ge, Sn, and it holds that: 0&#x3c;x&#x3c;1; 0&#x3c;y&#x3c;1; 0.5&#x3c;z&#x3c;1; y+z&#x3c;1.

Ceramic material, method for the manufacture of a ceramic material and electroceramic component comprising the ceramic material

The invention concerns a method for making a piezoelectrical device, whose electrode layers contain copper. The usage of copper in the electrode layers is enabled by a debindering process, which is carried out by steam.

Method for making a piezoceramic device

A ceramic material with a negative temperature coefficient of specific resistance has the general formula [{(SE,SE)(M,M)}(CrMn(Me,Me))O]. In this formula, SEand SEare different rare-earth metal cations, Mand Mare selected from Ca, Sr, and Meand Meare redox-stable, trivalent metal cations, wherein the following applies with respect to the parameters: 0&#x3c;x&#x3c;1; 0&#x3c;z&#x3c;1; 0&#x3c;y&#x3c;1&#x2212;z.

Ceramic material and electroceramic component comprising the ceramic material

An electrical component is specified with a sensor element, which is embedded in a plate arrangement. The plate arrangement includes at least three plates and conductor tracks, which are located between them and are conductively connected with the sensor element. At least two of the conductor tracks have exposed areas. Furthermore, a method for the encapsulation of a sensor element and a method for the production of a plate arrangement are specified.

Electrical component with a sensor element, method for the encapsulation of a sensor element, and method for production of a plate arrangement

A piezoelectric material contains a material with the molecular formula PDZ, wherein: 0&#x3c;c&#x2266;0.15 and 0&#x2266;d&#x2266;0.5, wherein P represents the composition Pb(ZrTi)Oand wherein: 0.50&#x2266;1&#x2212;y&#x2266;0.60, wherein Z represents an additional component of the perovskite type of structure, wherein D represents a material according to the general formula [(MO)(MO)][NbO], wherein Mrepresents BaSrwith 0&#x2266;t&#x2266;1 and Mrepresents strontium or calcium and wherein: &#x2154;&#x3c;a&#x3c;1 and 0&#x3c;p&#x3c;1, wherein the material D contains the cryolite type of structure.

Piezoelectric material, multilayer actuator and method for manufacturing a piezoelectric component

The present invention relates to a piezoelectrical device whose electrode layers contain copper. The usage of copper in electrode layers is enabled by a debindering process, which is carried out by steam.

Piezoceramic device

A piezoelectric actuator includes a stack of piezoceramic layers and electrodes among the piezoceramic layers. At least one edge region of the stack does not include electrodes. A cover layer is at the at least one edge region. The cover layer has a dielectric constant that is less than a dielectric constant of a piezoceramic layer.

Piezoactuator with low stray capacitance

The invention relates to a piezoelectric ceramic material having the general composition ABOwith at least a proportion of the PZT ceramic having a composition of the invention with Cu cations. The proportion of Zr and Ti cations is selected based upon the content of Cu cations, such that the ceramic material is tailored to the morphotropic phase boundary. The invention further discloses a method for producing a ceramic material of this type.

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Deutschlandsberg, Austria

Adalbert Feltz