Tile for fabrication and repair of thermal barriers
US-2015345313-A1 · Dec 3, 2015 · US
Ceramic heat shields having a reaction coating
US11312664B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11312664-B2 |
| Application number | US-201716315754-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 10, 2017 |
| Priority date | Jul 14, 2016 |
| Publication date | Apr 26, 2022 |
| Grant date | Apr 26, 2022 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A ceramic heat shield for a gas turbine. The ceramic heat shield has a ceramic body containing aluminium oxide and has a surface layer of the ceramic body which contains yttrium aluminium garnet as reaction coating material. A gas turbine includes such a ceramic heat shield and a method produces such a ceramic heat shield.
First claim
Opening claim text (preview).
The invention claimed is: 1. A process for producing a ceramic heat shield for a gas turbine comprising: providing an aluminum oxide-containing ceramic body; and producing a surface layer of the ceramic body containing yttrium aluminum garnet as reaction coating material, wherein the production of the yttrium aluminum garnet-containing surface layer comprises a step of applying a liquid reaction coating former to the ceramic body, and wherein the reaction coating former comprises yttrium nitrate. 2. The process of claim 1 , wherein the production of an yttrium aluminum garnet-containing surface layer comprises a step of sintering or co-sintering of the ceramic body after the application of the liquid reaction coating former. 3. The process of claim 2 , wherein the sintering or co-sintering of the ceramic body is effected at a temperature of at least 650 degrees Celsius. 4. The process of claim 3 , wherein the sintering or co-sintering of the ceramic body is effected at a temperature of at least 1500 degrees Celsius. 5. The process of claim 1 , wherein the liquid reaction coating former is sprayed or brushed onto the ceramic body or wherein the ceramic body is dipped into the liquid reaction coating former. 6. The process of claim 1 , wherein liquid reaction coating former is applied under negative pressure. 7. The process of claim 1 , wherein the step of providing the ceramic body comprises steps of making up a ceramic body base mixture, shaping, setting and drying.
Assignees
Inventors
Classifications
constructed mainly of ceramic components · CPC title
Wall structures (F23R3/02 and F23R3/007 take precedence) · CPC title
Manufacturing combustion chamber liners or subparts · CPC title
characterised by the material treated · CPC title
in gas turbines · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US11312664B2 cover?
- A ceramic heat shield for a gas turbine. The ceramic heat shield has a ceramic body containing aluminium oxide and has a surface layer of the ceramic body which contains yttrium aluminium garnet as reaction coating material. A gas turbine includes such a ceramic heat shield and a method produces such a ceramic heat shield.
- Who is the assignee on this patent?
- Siemens Energy Global Gmbh & Co Kg
- What technology area does this patent fall under?
- Primary CPC classification C04B41/87. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Apr 26 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).