Nuclear reactor component having a coating of amorphous chromium carbide
AssigneeCommissariat A L'energie Atomique Et Aux Energies Alternatives
InventorsFrédéric Schuster, Fernando Lomello, Francis Maury, Alexandre Michau, Raphaël Boichot, Michel Pons
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Abstract
A composite nuclear reactor component comprises a support and a protective layer (2). The support contains a substrate (1) based on a metal. The substrate is coated with an interposed layer (3) positioned between the substrate (1) and the protective layer (2). The protective layer (2) is composed of a material which comprises amorphous chromium carbide. The nuclear reactor component provides for improved resistance to oxidation, hydriding, and/or migration of undesired material.
Claims13
A nuclear component chosen from a nuclear fuel cladding, a spacer grid, a guide tube, a plate fuel or an absorber rod, comprising:
- i) a support containing a substrate based on a metal chosen from zirconium, titanium, vanadium, molybdenum or base alloys thereof (1), the substrate (1) being coated with an interposed layer (3) placed between the substrate (1) and at least one protective layer (2);
- ii) said at least one protective layer (2) coating said interposed layer and composed of a protective material comprising chromium which is an amorphous chromium carbide, wherein the interposed layer (3) comprises at least one interposed material chosen from tantalum, molybdenum, tungsten, niobium, vanadium, alloys thereof, a titanium carbonitride, a mixed titanium silicon nitride, a mixed titanium silicon carbide, a mixed titanium silicon carbonitride, a mixed titanium aluminum nitride, or mixtures thereof.
Dependencies are inferred from the claim text.