A method of treating silicon carbide fibers
US-2018194686-A1 · Jul 12, 2018 · US
Method for treating a silicon carbide fibre
US12338181B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12338181-B2 |
| Application number | US-202218571551-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 20, 2022 |
| Priority date | Jun 23, 2021 |
| Publication date | Jun 24, 2025 |
| Grant date | Jun 24, 2025 |
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- Title
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Abstract
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A method for treating at least one silicon carbide fibre includes a surface layer including carbon and/or a silicon oxycarbide, the treatment including at least removing the surface layer from the fibre by placing in contact with an ammonia phase in the supercritical state.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for treating at least one silicon carbide fibre comprising a surface layer containing carbon and/or a silicon oxycarbide, the method comprising at least removing the surface layer from the fibre by placing it in contact with an ammonia phase in the supercritical state. 2. The method according to claim 1 , wherein the removal of the surface layer is carried out in a treatment chamber, and wherein the method further comprises, after the removal, forming a coating on said at least one fibre, in the treatment chamber, from a treatment medium comprising at least ammonia. 3. The method according to claim 1 , wherein a temperature of the ammonia phase is greater than or equal to 600° C. 4. The method according to claim 3 , wherein the temperature of the ammonia phase is between 800° C. and 1200° C., and a pressure of the ammonia phase is between 100 bar and 150 bar. 5. The method according to claim 1 , wherein said at least one fibre is heated by microwaves during the treatment. 6. The method according to claim 1 , wherein said at least one fibre-moves through a treatment chamber during the treatment. 7. The method according to claim 1 , wherein said at least one fibre is made of silicon carbide having an oxygen content less than or equal to 1% in atomic percent. 8. A method for manufacturing a composite material part, comprising: treating fibers of a fibrous reinforcement by implementing a method according to claim 1 , and forming a matrix in the pores of the fibrous reinforcement.
Assignees
Inventors
Classifications
Silicon carbide · CPC title
Wet etching, e.g. with etchants dissolved in organic solvents · CPC title
Heat treatment · CPC title
Nitrides · CPC title
characterised by the material treated · CPC title
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- What does patent US12338181B2 cover?
- A method for treating at least one silicon carbide fibre includes a surface layer including carbon and/or a silicon oxycarbide, the treatment including at least removing the surface layer from the fibre by placing in contact with an ammonia phase in the supercritical state.
- Who is the assignee on this patent?
- Safran Ceram, Centre Nat Rech Scient, Univ Bordeaux, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification C04B35/80. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jun 24 2025 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).