Silicon carbide cladding as well as preparation method and application thereof
By weaving fiber ribs on the outside of the silicon carbide cladding and performing local densification and silicon carbide deposition, the problem of difficult silicon carbide cladding molding was solved, and a high-strength, intact ribbed structure was achieved, which improved the positioning stability and reliability of the fuel assembly.
CN121913786APending Publication Date: 2026-04-24CHINA NUCLEAR POWER TECH RES INST CO LTD
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Patent Information
- Application Number
- CN202511816655.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-02
- Publication Date
- 2026-04-24
AI Technical Summary
Technical Problem
Silicon carbide cladding is brittle and difficult to form, making it difficult to fabricate ribbed structures and affecting its application in small-pitch fuel assemblies.
Method used
By weaving fiber ribs on the outside of the ribless silicon carbide shell and then fixing, shaping, local densifying, and silicon carbide deposition, a ribbed silicon carbide shell is formed, thus avoiding the risk of interface separation caused by secondary processing.
Benefits of technology
It improves the radial positioning stability and overall structural reliability of silicon carbide cladding, enhances the positioning effect of fuel assemblies, and avoids the failure risk caused by interface delamination.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention discloses a silicon carbide cladding as well as a preparation method and application thereof, and relates to the technical field of silicon carbide cladding preparation. The preparation method comprises the following steps: weaving the fiber ribs on the outer side of the rib-free silicon carbide cladding; the fiber ribs are fixed and formed, densification treatment and silicon carbide deposition are conducted on the end plug portions of the rib-free silicon carbide cladding, and the silicon carbide cladding is obtained; the outer side of the silicon carbide cladding is provided with ribs. According to the preparation method, the problem that a rib type structure is difficult to prepare due to brittleness of silicon carbide is solved, the reliability between the obtained silicon carbide cladding fiber rib and the body is high, the stability is good, and the radial positioning stability of the silicon carbide cladding in a small-spacing fuel assembly is remarkably enhanced when the silicon carbide cladding fiber rib is used for the nuclear reactor fuel assembly.
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