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Multilayer thermal protection system and method for making same

A protection system, multi-layer thermal technology, applied in the direction of chemical instruments and methods, coatings, layered products, etc., can solve the problems of limited temperature capability, no open use of prefabricated monolithic ceramic components, etc.

Inactive Publication Date: 2010-09-29
ANSALDO ENERGIA IP UK LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0016] 3a. Oxide-based CMCs are limited in temperature capability and need to be protected with high temperature insulation
Also, this document does not disclose the use of prefabricated monolithic ceramic elements in the context of manufacturing such layer structures

Method used

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  • Multilayer thermal protection system and method for making same
  • Multilayer thermal protection system and method for making same
  • Multilayer thermal protection system and method for making same

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Embodiment Construction

[0066] With reference to the accompanying drawings, the purpose of which is to illustrate presently preferred embodiments of the invention and not to limit them, figure 1 A hybrid metal / ceramic structure 6 comprising at least 4 layers for use in a high temperature environment such as that of a GT is shown. The structure consists of a load-carrying superalloy material 5, an oxidation / corrosion resistant adhesive coating 4, a low temperature ceramic layer 3 resistant to temperatures up to 1150°C (multilayer structures are also possible), a ceramic adhesion layer 2 and a high temperature ceramic component or layer 1 configuration, temperature capability up to 1750°C.

[0067] The metal substrate 5 is a nickel-based superalloy, the bond coat 4 contains MCrAlY or PtAl systems, the low-temperature ceramic layer 3 or TBC layer is based on or consists of 7YSZ, and the bond layer 2 is a refractory cement paste, usually alumina Calcium based. The high temperature resistant ceramic com...

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Abstract

The invention relates to multilayer thermal protection system and a method for making same. A multilayer thermal protection system is described, in which a first ceramic layer (3) is attached via a bond coat layer (4) on a metallic substrate (5), wherein on the first ceramic layer (3) there is arranged at least one second ceramic layer (1) attached to the first ceramic layer (3) via a ceramic adhesive layer (2), wherein the first ceramic layer (3) is a low-temperature ceramic layer and the second ceramic layer (1) is a high temperature ceramic layer.

Description

technical field [0001] The present invention relates to the field of thermal barrier coatings (TBC), in particular for the protection of components exposed to the hot gas paths of machines such as gas turbines. Background technique [0002] Gas turbines (GTs) are increasingly required to have higher efficiencies, typically by increasing the firing temperature (firing temperature) up to 1750°C at least for a very short period of time and reducing the impact on GT components. cooling effect is achieved. In addition to handling high temperatures, these components should also be able to overcome the harsh GT environment for extended periods of time (>24000 hours of operation). There are the following main ways to manufacture thermal barrier coating systems that can handle high temperatures and harsh environments: [0003] 1. Base metal / bondcoat (BC) / thermal barrier coating (TBC) [0004] 2. Base Metal / BC / TBC / Environmental Barrier Coating (EBC) [0005] 3. Ceramic Matrix C...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D5/28B32B18/00C23C4/10
CPCC04B2237/128C04B2237/68C04B2237/76F05D2230/312C04B35/6269C04B2237/704C04B37/006C04B2237/597F05C2203/08C04B2235/6567C04B2237/72C04B2237/348C04B2237/708C04B2237/52C04B2237/127C04B2237/78C04B2237/125C04B37/008C04B2237/123C04B2237/064C23C28/00C23C4/10F01D5/288C04B2237/706C04B37/005C23C28/04C04B2237/343C04B2237/068C04B2237/405C04B2235/6562C23C4/085C04B2237/64C04B2237/126C04B2235/94F05D2300/21C04B2237/80C23C28/321C23C28/3215C23C28/345C23C28/3455C23C28/36C23C4/073Y10T428/163Y10T156/10Y10T428/168Y10T428/24967Y10T428/12549
Inventor H·-P·博斯曼S·巴彻戈达M·埃斯奎尔R·伊滕
Owner ANSALDO ENERGIA IP UK LTD
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