Ceramic matrix composite component coated with environmental barrier coatings and method of manufacturing the same
US-2015079371-A1 · Mar 19, 2015 · US
Environmental barrier coating
US10011724B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10011724-B2 |
| Application number | US-201715469034-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 24, 2017 |
| Priority date | Mar 2, 2015 |
| Publication date | Jul 3, 2018 |
| Grant date | Jul 3, 2018 |
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Abstract
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A coating used in a vapor-oxidative atmosphere has a first layer including SIALON and a second layer covering the first layer and being exposed to the atmosphere, the second layer including mullite, wherein the first layer and the second layer get in contact with each other.
First claim
Opening claim text (preview).
What is claimed is: 1. A coating used in a vapor-oxidative atmosphere and covering a ceramic matrix composite material, comprising: a first layer including SiAlON; and a second layer covering the first layer and being exposed to the atmosphere, the second layer consisting essentially of mullite and Re2Si2O7, the Re2Si2O7 being less than 50 vol % relative to mullite, where Re is one or more of Y, Yb, Er, and Dy, wherein the first layer and the second layer get are in contact with each other, wherein the SiAlON is represented as Si6−zAlzOzN8−z, where z is in a range of 0<z≤4.2. 2. The coating of claim 1 , wherein the second layer is 5-300 micrometers in thickness. 3. The coating of claim 1 , wherein the first layer is 5-300 micrometers in thickness and is bonded with and covers a base body. 4. The coating of claim 1 , wherein Re 2 Si 2 O 7 in the second layer is less than 30 vol % relative to mullite. 5. The coating of claim 1 , wherein Re 2 Si 2 O 7 in the second layer is less than 10 vol % relative to mullite. 6. The coating of claim 1 , wherein z is in a range of 0<z≤3.0. 7. The coating of claim 1 , wherein the mullite has a composition of Al 4+2x Si 2−2x O 10−x , where x is in a range of 0.20≤x≤0.39. 8. The coating of claim 7 , wherein x is in a range of 0.23≤x≤0.30.
Assignees
Inventors
Classifications
- C04B41/89Primary
for obtaining at least two superposed coatings having different compositions · CPC title
Ceramic matrix composites [CMC] · CPC title
of silicon · CPC title
of silicon · CPC title
Aluminium oxides · CPC title
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- What does patent US10011724B2 cover?
- A coating used in a vapor-oxidative atmosphere has a first layer including SIALON and a second layer covering the first layer and being exposed to the atmosphere, the second layer including mullite, wherein the first layer and the second layer get in contact with each other.
- Who is the assignee on this patent?
- Ihi Corp, Japan Fine Ceramics Ct
- What technology area does this patent fall under?
- Primary CPC classification C04B41/89. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jul 03 2018 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).