Siemens Aktiengesellschaft

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Siemens Westinghouse Power Corporation

Sulzer Metco Ag

Wolfram Beele

Beate Heimberg

Ulrich Bast

Peter Greil

Fritz Aldinger

Karl Kempter

Thomas Haubold

Michael Hoffmann

Axel Endriss

Chu-Wan Hong

Hans J Seifert

Ramesh Subramanian

David B Allen

Thomas Jung

Arno Refke

Burkhard Hayess

Peter-Jochen Brand

Using this method, a coating () is manufactured on a substrate (), which forms a surface of a base body. In this method a layer () with ceramic coating material is applied to the substrate in a process chamber () using a plasma beam () and using an LPPS or LPPS-TF process. The substrate contains at least one metal Me. At a set reaction temperature of the substrate and in the presence of oxygen, an oxide, which results reactively with metal M diffused on the surface, is generated as a ceramic intermediate layer (). The ceramic layer () is deposited on this intermediate layer.

Method for the manufacture of a coating

A device operable in a temperature environment in excess of about 1000&deg; C. is provided. The device comprises a substrate and a ceramic thermal barrier layer deposited on at least a portion of the substrate. The layer is formed with a ternary or pseudoternary oxide having a pyrochlore or perovskite structure and a fugative material and having pores or other voluminous defects. The thermal barrier layer advantageously is abradable.

Thermal barrier layer and process for producing the same

A method of placing a ceramic coating on an article of manufacture comprising a substrate formed of a nickel or cobalt-based superalloy, which includes the steps of placing a bonding layer on the substrate and placing an anchoring layer, which is chemically different from the bonding layer and comprises a nitride compound, on the bonding layer. The method further includes the step of placing the ceramic coating on the anchoring layer.

Method of manufacturing an article with a protective coating system including an improved anchoring layer

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

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

In order to form a novel article of manufacture, a nickel or cobalt-based superalloy substrate is covered with a protective system resistant to thermal, corrosive and erosive attack. A bonding layer is disposed on the substrate and an anchoring layer on the bonding layer. The anchoring layer is formed as a nitride compound. The nitride compound is aluminum nitride in particular. A ceramic coating is disposed on the anchoring layer. The anchoring layer prevents transmission of diffusion active elements through the anchoring layer to the thermal barrier layer, reduces oxidation of layers therebelow and provides for good heat transmission therethrough.

Article with a protective coating system including an improved anchoring layer and method of manufacturing the same

The invention relates to a product ( ) designed for hot gas admission with a coating ( ) in which chromium nitride ( ) is inserted as a diffusion barrier to improve the long-term stability of the coating ( ). The invention furthermore relates to a process for producing a coating ( ) for a product designed for hot gas admission ( ).

Product designed to be subjected to the effects of hot gas and method for producing a coating for this product

Ceramic thermal barrier layer for gas turbine engine component

Protective layer system for gas turbine engine component

A device operable in a temperature environment in excess of about 1250&deg; C. is provided. The device comprises a substrate and a ceramic thermal barrier layer deposited on at least a portion of the substrate. The layer is formed with a ternary or pseudoternary oxide having a pyrochlore structure of the formula A B O and having pores or other voluminous defects.

The invention relates to a coating process, particularly for coating a gas turbine blade ( ) having cooling passageways ( ) opening out onto the surface ( ). During the coating operation, a fluid ( ) is directed out of the cooling passageways ( ) to prevent blocking of the cooling passageways ( ). The invention also relates to an apparatus for implementing this coating process.

Coating method and device

The invention relates to a component having a substrate and a ceramic heat-insulating layer which is arranged thereon. This heat-insulating layer has a columnar structure having ceramic stems which are essentially oriented mainly normal to the surface of the substrate and have a respective stem diameter of less than 2.5 &mgr;m. The invention also relates to a coating apparatus for producing a heat-insulating layer on a substrate and to a method of coating a substrate in the manner of a reactive gas-flow sputtering method.

Coating method for producing a heat-insulating layer on a substrate

A product which is to be exposed to a hot gas and has a thermal barrier layer, such as a component for hot gas ducts (turbine blades, heat shields, etc.), has a metallic base body made of a superalloy based on nickel, cobalt or iron. An adhesion promoter layer also serves to form aluminum oxide/chromium oxide. A thermal barrier layer is formed of a ternary or pseudoternary oxide having a pyrochlore or perovskite structure. The oxide is stable with respect to phase between room temperature and melting temperature even in the absence of a phase stabilizer. A process is provided for producing components of that type by atmospheric plasma spraying or electron beam PVD methods.

Product to be exposed to a hot gas and having a thermal barrier layer, and process for producing the same

A method for coating a component with a thermal barrier coating, includes placing the component in a coating chamber and maintaining the component at a component temperature. A vacuum is established in the coating chamber. The process parameters vacuum pressure and component temperature are controlled together, at least during the coating process with a deposition of material forming the thermal barrier coating. The control takes place in such a way that the parameters are in a respective set-point value range and the thermal barrier coating grows with a columnar structure on the component. A coating device is also provided.

Coating device and method for coating a component with a thermal barrier coating

An article of manufacture includes a substrate and an anchoring layer disposed on a surface of the substrate. The substrate is capable of developing a first oxide on the surface which is tightly bonded thereto and includes a first metallic element. Alternatively, the surface is formed of the first oxide. The anchoring layer is formed with a ternary oxide of the first metallic element, a second metallic element and oxygen. A second oxide layer, which contains an oxide of the second metallic element, is disposed on the anchoring layer. The anchoring layer is formed on the substrate in a series of process steps, which include: establishing an atmosphere containing oxygen around the article; evaporating a compound of the first metallic element and a compound of the second metallic element into the atmosphere and forming a ternary gas phase containing the first metallic element, the second metallic element and the oxygen; and precipitating the ternary gas phase on the article.

Growing community of inventors

Ratingen, Germany

Wolfram Beele