Siemens Aktiengesellschaft

Mtu Aero Engines Gmbh

Jan Steinbach

Ralph Reiche

Ursus Krüger

Daniel Körtvelyessy

Werner Stamm

Georg Bostanjoglo

Dimitrios Thomaidis

Axel Kaiser

Marc De Vogelaere

Michael Ott

Rolf Wilkenhöner

Michael Rindler

Raymond Ullrich

Robert Singer

Eckart Schumann

Rene Jabado

Volker Vosberg

Gabriele Winkler

Ursula Pickert

Matthias Oechsner

Uwe Paul

Matthias Jungbluth

Andreas Volek

Dirk Goldschmidt

Jens Birkner

Beate Seiler

Ralph Reichle

Known protective coatings with a high Cr-content and silicon as an additive have brittle phases which become additionally brittle under the influence of carbon during use. The protective coating herein has a double metallic layer that only contains tantalum on the outside contents of the layers.

Layer system with double MCrAlX metallic layer

Known protective layers having high Cr content and additional silicon form brittle phases, which additionally become brittle under the effect of carbon during use. The protective layer according to the invention comprises a two-part metal layer, which contains tantalum on the outside.

Layer system having a two-ply metal layer

Protective layers, according to the prior art, achieve their protective function b depletion of a defined element that forms a protective oxide layer or that is exhausted as a sacrificial material. Once said material is exhausted, the protective function cannot be maintained. The invention is characterized by using particles () that contain a sustained-release depot of the exhaustible material. For this purpose, the material is present in a superstoichiometric form.

Matrix and layer system comprising non-stoichiometric particles

The invention relates to a method for repairing components comprising a base material with an oriented microstructure, wherein the repair point comprises a correspondingly oriented microstructure as the surrounding base material. According to the inventive method, solder is applied in the region of a point which is to be repaired and is soldered to the component by means of a heating effect produced by a device. A temperature gradient, i.e., approximately a temperature characteristic, is produced during the heating effect, said temperature characteristic ranging from a high to a low temperature in the region of the point which is to be repaired.

Repair soldering method for repairing a component which comprises a base material with an oriented microstructure

Components which are subject to operating loads can often be passed for refurbishment by means of an acid treatment. The time for which the components remain in the acid has hitherto been determined empirically, which means that individual loads are not taken into account. The process according to the invention for the surface treatment of a component proposes that at least repeatedly a measurement voltage be applied to the component, resulting in the flow of a current, the time profile of which represents the state of the surface treatment and is used to decide upon when to terminate or interrupt the acid treatment.

Process for the surface treatment of a component, and apparatus for the surface treatment of a component

The invention relates to a material composition that is used for producing a coating for a component, especially a turbine component, which is made of a metallic basic material, i.e. a metal or a metal alloy. Said material composition comprises a matrix material for forming a basic coating matrix and at least one filler for adjusting desired coating proportions or coating characteristics. The matrix material can be provided especially with basic glass ceramic properties. The inventive material composition is characterized in that the matrix material and/or the filler contains nanoparticles.

Material composition for producing a coating for a component made from a metallic base material, and coated metallic component

A method of repairing a crack in a component comprising a base material, in particular in a gas turbine blade, a suspension, which comprises a carrier liquid and at least one solid in the form of nanoparticles of the same material as the base material, being applied to the location to be repaired. A heat treatment of the component is carried out, the solid in the form of nanoparticles being melted and a bond with the base material being formed. During the heat treatment, the component is exposed to a thermal shock, in which a maximum temperature which corresponds to the melting temperature of the nanoparticles is reached. The nano size of the particles in the suspension causes a lowering of the melting point of these particles to take place, so that the structure of the base material does not change even at the melting temperature of the nanoparticles.

Method of repairing a crack in a turbine component

Apparatus and process for removing surface regions of a component. The prior art involves removing surface regions of a metallic component by means of electrochemical processes. The electrochemical process is accelerated by the use of a current pulse generator.

Device and method for removing surface areas of a component

Cracks are conventionally difficult to clean which often leads to damage to other regions of the component for cleaning. According to the invention, a plasma cleaning method is used, whereby a pressure and/or a separation of an electrode to the component are varied, in order to achieve a plasma cleaning in the crack.

Process for the plasma cleaning of a component

A process is intended to allow simple and particularly reliable electrolyte generation and conditioning from metal-containing used electrolytes and/or used process solutions and/or pulverulent metal wastes. For this purpose, waste products containing metal ions from metal surface treatment processes are to be treated by producing and/or using a metal ion mixed solution, replacing anions contained in the metal ion mixed solution with anions selected for an intended use selected and selectively removing metal ions which are categorized as unsuitable for the intended use selected from the metal ion mixed solution prepared in this way.

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Berlin, Germany

Jan Steinbach