Method for manufacturing a part made of cmc
US-2015251959-A1 · Sep 10, 2015 · US
High temperature tolerant ceramic matrix composites and environmental barrier coatings
US2016017749A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016017749-A1 |
| Application number | US-201414772883-A |
| Country | US |
| Kind code | A1 |
| Filing date | Mar 4, 2014 |
| Priority date | Mar 5, 2013 |
| Publication date | Jan 21, 2016 |
| Grant date | — |
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- Title
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Abstract
Official abstract text for this publication.
High-temperature machine components, more particularly, articles capable of operating in high-temperature environments, including for example turbines of gas engines, may be formed of a high temperature ceramic matrix composite that includes a ceramic substrate including silicon; an environmental harrier coating system including a silicon containing bond coat; and a diffusion barrier layer of a carbide or a nitride between the substrate of the article and the silicon bond coat of the environmental barrier coating system. The diffusion harrier layer selectively prevents or reduces the diffusion of boron and impurities from the substrate to the bond coat of the environmental barrier coating system.
First claim
Opening claim text (preview).
What is claimed is: 1 . An article, comprising: a ceramic substrate comprising silicon; an environmental barrier coating system comprising a silicon containing bond coat; and a diffusion barrier layer between the substrate and the silicon bond coat, wherein the diffusion barrier layer prevents or reduces diffusion of boron and impurities from the substrate to the bond coat. 2 . The article of claim 1 , wherein the substrate comprises a SiC—SiC ceramic matrix composite. 3 . The ceramic matrix composite of claim 1 , wherein the matrix comprises silicon and silicon carbide 4 . The article of claim 3 , where, in the silicon of the ceramic matrix composite, a total concentrations of impurities other than boron is less than 1 atom percent. 5 . (canceled) 6 . (canceled) 7 . The article of claim 1 , wherein the diffusion barrier layer comprises silicon carbide or silicon nitride. 8 . (canceled) 9 . (canceled) 10 . (canceled) 11 . (canceled) 12 . (canceled) 13 . (canceled) 14 . (canceled) 15 . (canceled) 16 . (canceled) 17 . (canceled) 18 . (canceled) 19 . The article of claim 1 , wherein the diffusion barrier layer is from about 1 micrometer to about 150 micrometers thick. 20 . The article of claim 1 , wherein the environmental barrier coating system further comprises at least one layer comprising a rare earth disilicate.
Assignees
Inventors
Classifications
Selecting composite materials, e.g. blades with reinforcing filaments · CPC title
Silicon carbides · CPC title
based on silicon carbide · CPC title
Ceramic matrix composites [CMC] · CPC title
Silicon · CPC title
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Frequently asked questions
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- What does patent US2016017749A1 cover?
- High-temperature machine components, more particularly, articles capable of operating in high-temperature environments, including for example turbines of gas engines, may be formed of a high temperature ceramic matrix composite that includes a ceramic substrate including silicon; an environmental harrier coating system including a silicon containing bond coat; and a diffusion barrier layer of a…
- Who is the assignee on this patent?
- Gen Electric
- What technology area does this patent fall under?
- Primary CPC classification F01D25/005. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Thu Jan 21 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).