Part coated with a surface coating and associated methods
US-2017159459-A1 · Jun 8, 2017 · US
A method of fabricating a part out of ceramic matrix composite material
US2019337859A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2019337859-A1 |
| Application number | US-201715999681-A |
| Country | US |
| Kind code | A1 |
| Filing date | Feb 16, 2017 |
| Priority date | Feb 18, 2016 |
| Publication date | Nov 7, 2019 |
| Grant date | — |
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Abstract
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A method of fabricating a part out of ceramic matrix composite material, the method including infiltrating a fiber preform with a molten composition including a majority by weight of silicon, the fiber preform including silicon carbide fibers, silicon carbide powder being present in the pores of said preform, a mean size of silicon carbide crystallites in the powder being less than the mean size of the silicon carbide crystallites in the fibers, a ceramic matrix being formed in the pores of the fiber preform during the infiltration so as to obtain the part made of composite material.
First claim
Opening claim text (preview).
1 . A method of fabricating a part out of ceramic matrix composite material, the method comprising: infiltrating a fiber preform with a molten composition comprising a majority by weight of silicon, the fiber preform comprising silicon carbide fibers, silicon carbide powder being present in the pores of said preform, a mean size of silicon carbide crystallites in the powder being less than the mean size of the silicon carbide crystallites in the fibers, a ceramic matrix being formed in the pores of the fiber preform during the infiltration so as to obtain the part made of composite material. 2 . A method according to claim 1 , wherein prior to infiltration, the fiber preform presents a consolidation phase comprising silicon carbide, the mean size of the silicon carbide crystallites in the powder being less than the mean size of the silicon carbide crystallites in the consolidation phase. 3 . A method according to claim 1 , wherein the mean size of the silicon carbide crystallites in the powder is less than or equal to 80% of the mean size of the silicon carbide crystallites in the fibers. 4 . A method according to claim 2 , wherein the mean size of the silicon carbide crystallites in the powder is less than or equal to 80% of the mean size of the silicon carbide crystallites in the consolidation phase. 5 . A method according to claim 1 , wherein an interphase is formed on the fibers before the infiltration step. 6 . A method according to claim 5 , wherein the interphase is formed by at least one layer of the following materials: pyrolytic carbon, boron-doped carbon, or boron nitride. 7 . A method according to claim 1 , wherein the fiber preform is made as a single piece by three-dimensional weaving or from a plurality of two-dimensional fiber plies.
Assignees
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Classifications
Fibres, filaments, whiskers, platelets, or the like · CPC title
the particle size being expressed by crystallite size or primary particle size · CPC title
Silicon carbide · CPC title
by gas phase techniques · CPC title
Two-dimensional, e.g. woven structures · CPC title
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- What does patent US2019337859A1 cover?
- A method of fabricating a part out of ceramic matrix composite material, the method including infiltrating a fiber preform with a molten composition including a majority by weight of silicon, the fiber preform including silicon carbide fibers, silicon carbide powder being present in the pores of said preform, a mean size of silicon carbide crystallites in the powder being less than the mean siz…
- Who is the assignee on this patent?
- Safran Ceram, Centre Nat Rech Scient
- What technology area does this patent fall under?
- Primary CPC classification C04B35/806. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Nov 07 2019 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).