Siemens Aktiengesellschaft

Other

Infineon Technologies Ag

Siemsns Aktiengesellschaft

Ulrich Bast

Karl Kempter

Wolfram Beele

Peter Greil

Fritz Aldinger

Thomas Haubold

Michael Hoffmann

Beate Heimberg

Axel Endriss

Chu-Wan Hong

Hans J Seifert

Wolfram Wersing

Karl Lubitz

Dieter Cramer

Uwe Rettig

Carsten Schuh

Ralph Reiche

Andreas Wolff

Georg Ernst

Stefan Lampenscherf

Thomas Zeiler

Christine Taut

Martina Vogt

Hans Kaarmann

Wolfgang Hermann

Roman Beyer

Thomas Schulenberg

Gerald Kainz

Matthias Oechsner

The invention relates to a turbine comprising at least four stages and to the use of a rotor blade with a reduced mass. In prior art, rotor blades in the fourth stage of a gas turbine, which exceed 50 cm in length, cause problems relating to mechanical strength, as centrifugal forces of too great a magnitude occur during the rotation of the rotor blades. An inventive rotor blade in the fourth row of a gas turbine has a reduced density as a result of a high proportion of a ceramic, thus reducing the centrifugal force.

Turbine blade with a reduced mass

A device for and method of packaging electronic components () using injection-molding. For this purpose, a multiplicity of components () are arranged in predetermined positions on a first side () of a leadframe (). The leadframe () has interconnects () with contact terminal areas () for connecting to contact areas () of the electronic components () and contact vias () to external contacts on a second side () of the leadframe (). In this case, the leadframe () includes a ceramic substrate () with a first side () having edge regions () configured with a ductile, annular metal layer ().

Device for packing electronic components using injection molding technology

An apparatus for monitoring the structural integrity of a component. A monitoring structure is applied to a component that is subject to structural degradation. The monitoring structure includes an electrical conductor that becomes cracked if the component becomes structurally degraded. When the component is a ductile metal component that may be degraded by bending, the electrical conductor is formed of a brittle material that cracks when the ductile metal component is bent. When the component is a brittle ceramic heat shield wherein a crack having a critical length is of concern, the electrical conductor is located at a predetermined location wherein a critical length crack in the component will propagate into the conductor. A crack in the electrical conductor is detected with a monitoring device to indicate a degraded structural condition in the component.

Device for detecting degradation of a component

A method and device for layer thickness determination allows for the layer thickness to be determined in situ during the coating process. This is achieved using a sensor which has an electrical property which, as a result of the coating process, changes in a manner which is representative of the layer thickness which has been reached. As such, this property can be measured.

Method and device for in situ layer thickness determination

The invention relates to a product ( ), particularly a gas turbine blade that can be exposed to a hot aggressive gas ( ). The product ( ) has a metallic basic body ( ), which is provided with a thermal barrier coating ( ) having a spinel of the composition AB O .

Product, especially a gas turbine component, with a ceramic heat insulating layer

The invention relates to a heat shield block, in particular for lining a combustion chamber wall, having a hot side which can be subjected to a hot medium, a wall side opposite the hot side, and a peripheral side adjoining the hot side and the wall side. A tension element which can be prestressed to a prestress (F ) is attached to the peripheral side, release of a fragment, formed during a fracture, of the heat shield block being reliably prevented by the prestress (F ) of the tension element. The invention also relates to the use of a heat shield block, in particular for lining a combustion chamber wall of a gas turbine.

Heat shield block and use of a heat shield block in a combustion chamber

An article that is particularly well suited for use as a gas turbine engine component has a metallic substrate and a ceramic thermal barrier layer including a mixed metal oxide system comprising a compound selected from the group consisting of (i) a lanthanum aluminate and (ii) a calcium zirconate, the calcium in which is partially replaced by at least one calcium-substitute element, such as strontium (Sr) or barium (Ba). In addition, the lanthanum in the lanthanum aluminate can be partially replaced by a lanthanum-substitute element from the lanthanide group, particularly gadolinium (Gd). A process for producing such an article comprises providing a pre-reacted mixed metal oxide system as described above and applying it to the substrate by plasma spraying or an evaporation coating process.

Process for producing a ceramic thermal barrier layer for gas turbine engine component

Ceramic thermal barrier layer for gas turbine engine component

A piezo actuator (,) is disclosed that has a contact lug (,) for the electrical contacting of an electrode (,) of an actuator member (,). Due to an expansion and contraction of the actuator member, a mechanical stress occurs in the contact lug that is minimized in that the contact lug has a device for adapting the expanse to a dimension of the expansion and contraction. The device is, for example, a deformation material in the form of a wire weave. The piezo actuator is utilized for the drive of an injection valve in an internal combustion engine.

Piezo actuator with improved electrical contacting and employment of such a piezo actuator

For testing structural ceramic parts under overload conditions, a previously calculated temperature distribution is generated on the part by thermal radiation, this temperature distribution inducing the desired test stress or overload. The temperature distribution is measured with topically and temporally resolving temperature sensors, is compared to a desired or calculated temperature distribution, and is regulated by varying the duration and/or location of the radiation influence until the desired temperature distribution has been produced.

Proof test for ceramic parts

A composite ultrasound transducer (array) contains piezoelectric ceramic transducer elements which radiate substantially in the longitudinal direction, and are embedded in a polymer matrix. The transducer elements have such a geometrical structure, and are arranged relative to each other, so that the development of oscillation modes perpendicular to the longitudinal direction of the transducer elements is suppressed. A method for manufacturing the composite ultrasound transducer includes the steps of filling a plastic form, having a 'negative' of the desired shape of the transducer elements, with ceramic slurry, and pyrolyzing the plastic form after the slurry dries therein. The resulting voids between the hardened ceramic elements are filled with polymer to create the overall composite transducer. The transducer elements can thus be given an arbitrary shape and arrangement, such as hexagonal or irregular square structures, having a trapezoidal cross-section in planes parallel to the longitudinal axis of the transducer elements.

Composite ultrasound transducer and method for manufacturing a

Method for producing a structured ceramic film or a ceramic member

A method for manufacturing piezo-electric ceramic materials having predetermined acoustic impedance, wherein internal cavities are generated by a photolithographic process, utilizing a foil stack of green ceramic foils.

Method for manufacturing ceramic material having piezo-electric

Growing community of inventors

Munich, Germany

Ulrich Bast