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Method for manufacturing metal-ceramic composite structure and metal-ceramic composite structure

A metal-ceramic composite and metal-ceramic technology, which is used in the manufacture of the metal-ceramic composite structure according to the preamble of claim 1, and the field of metal-ceramic composite structure, which can solve the problems of cracks and failures near the connection.

Active Publication Date: 2017-01-11
ANSALDO ENERGIA IP UK LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Residual shear stress often leads to cracking and failure near joints

Method used

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  • Method for manufacturing metal-ceramic composite structure and metal-ceramic composite structure
  • Method for manufacturing metal-ceramic composite structure and metal-ceramic composite structure

Examples

Experimental program
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Effect test

Embodiment Construction

[0041] The invention is based on the idea of ​​using an integrated mechanical interlock between the base structure and the ceramic tile with the intermediate layer instead of bonding. this is in figure 2 (Schematic) is shown. figure 2The metal-ceramic composite structure 30 includes a base metal structure or member (e.g., blades, vanes, combustor liners, platforms, etc.) 23, which in this case has a cooling chamber on its backside for The plates 25 receive cooling air in an impingement cooling arrangement. During operation, cooling air enters chamber 24 through a plurality of impingement holes 26 , impinges on the inner walls of member 23 , and exits through cooling air passages 27 .

[0042] The thermally loaded front side of the component 23 is protected from high temperatures by means of ceramic tiles 21 and 22 which abut with a gap 29 and are fixed in place by mechanical interlocking elements in the form of mushroom-shaped cavities 28 in the tiles 21 and 22. On the fr...

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Abstract

The present invention relates to a method for producing a metal-ceramic composite structure and a metal-ceramic composite structure. The metal-ceramic composite structure is intended to be exposed to high temperatures and includes a base metal structure or member covered on at least one side and permanently bonded to one or more ceramic tiles. The method comprises: a) making one or more green bodies and sintering the green bodies to obtain one or more ceramic tiles; b) arranging the ceramic tiles in a casting mold; c) injecting liquid metal into the casting mold so that making an intermediate metal layer; wherein the intermediate metal layer is formed with a mechanical interlock between the ceramic tile intermediate metal layers; d) after solidification of the injected metal, removing the resulting cermet structure from the casting mold; and then, having the intermediate layer Ceramic tiles are permanently bonded to base metal structures or components.

Description

technical field [0001] The present invention relates to methods for producing composite structures. It relates to a method for producing a metal-ceramic composite structure according to the preamble of claim 1 . It also relates to cermet composite structures for use under high temperature conditions, preferably above 300°C. Background technique [0002] Sintered ceramic tiles have a higher temperature capability than thermal barrier coatings (TBC), which are often used in the hot gas path of gas turbines. Therefore, for insulation purposes, thicker ceramic tiles can be used as thermal protection until the application limit is reached. This in turn allows increased cooling air savings for the part, which is beneficial for the overall efficiency of the machine. [0003] However, the bonding of ceramic tiles to the base metal structure is a problem. They cannot be sprayed onto the surface of a base metal structure like TBC because they require sintering at temperatures abov...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D19/08F01D25/08F01D5/28F01D9/02
CPCB22D19/04C04B37/026B22D19/08Y10T428/12396B22D19/00B32B15/043C23C6/00
Inventor H.布兰德H-P.博斯曼恩
Owner ANSALDO ENERGIA IP UK LTD