Process for manufacturing a thermostructural composite part
US-8999439-B2 · Apr 7, 2015 · US
Ceramic matrix composites having monomodal pore size distribution and low fiber volume fraction
US10584070B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10584070-B2 |
| Application number | US-201715831896-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 5, 2017 |
| Priority date | Mar 23, 2016 |
| Publication date | Mar 10, 2020 |
| Grant date | Mar 10, 2020 |
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- Title
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- Abstract
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Abstract
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Ceramic matrix composite articles include, for example, a plurality of unidirectional arrays of fiber tows in a matrix having a monomodal pore size distribution, and a fiber volume fraction between about 15 percent and about 35 percent. The articles may be formed by, for example, providing a shaped preform comprising a prepreg tape layup of unidirectional arrays of fiber tows, a matrix precursor, and a pore former, curing the shaped preform to pyrolyze the matrix precursor and burnout the pore former so that the shaped preform comprises the unidirectional arrays of fiber tows and a porous matrix having a monomodal pore size distribution, and subjecting the cured shaped preform to chemical vapor infiltration to densify the porous matrix so that the ceramic matrix composite article has a fiber volume fraction between about 15 percent and about 35 percent.
First claim
Opening claim text (preview).
The invention claimed is: 1. A ceramic matrix composite article comprising: a plurality of unidirectional arrays of fiber tows in a matrix having a monomodal pore size distribution, wherein the monomodal pore size distribution has a median pore size of about 1 micrometer to about 20 micrometers; and wherein the ceramic matrix composite article comprises a fiber volume fraction between about 15 percent and about 35 percent. 2. The ceramic matrix composite article of claim 1 wherein the ceramic matrix composite article has a fiber volume fraction between about 15 percent and about 30 percent. 3. The ceramic matrix composite article of claim 1 wherein the matrix comprises a uniform spacial porosity distribution. 4. The ceramic matrix composite article of claim 1 wherein the ceramic matrix composite article comprises an interlaminar tensile strength of over 6 ksi. 5. The ceramic matrix composite article of claim 1 wherein the ceramic matrix composite article comprises a volume porosity of about 5 percent to about 20 percent. 6. The ceramic matrix composite article of claim 1 wherein the ceramic matrix composite article comprises at least one first portion having a first fiber volume percentage and at least one second portion having a second fiber volume percentage different from said first fiber volume percentage. 7. The ceramic matrix composite article of claim 1 wherein the unidirectional arrays of fiber tows comprise silicon carbide. 8. The ceramic matrix composite article of claim 1 wherein the matrix comprises silicon carbide. 9. The ceramic matrix composite article of claim 1 wherein said ceramic matrix composite article comprises a turbine component or a turbine component repair.
Assignees
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Classifications
Liquid infiltration of green bodies or pre-forms · CPC title
Macromolecular compounds (C04B38/062 takes precedence) · CPC title
Orientation of the fibers · CPC title
Fibres or filaments · CPC title
Ceramic matrix composites [CMC] · CPC title
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- What does patent US10584070B2 cover?
- Ceramic matrix composite articles include, for example, a plurality of unidirectional arrays of fiber tows in a matrix having a monomodal pore size distribution, and a fiber volume fraction between about 15 percent and about 35 percent. The articles may be formed by, for example, providing a shaped preform comprising a prepreg tape layup of unidirectional arrays of fiber tows, a matrix precurso…
- Who is the assignee on this patent?
- Gen Electric
- What technology area does this patent fall under?
- Primary CPC classification C04B35/571. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Mar 10 2020 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).