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AssigneeCommissariat A L'energie Atomique Et Aux Energies Alternatives
InventorsJean-Christophe BRACHET, Alain BILLARD, Fédéric SCHUSTER, Marion LE FLEM, Isabel IDARRAGA-TRUJILLO, Matthieu LE SAUX, Fernando LOMELLO
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The invention relates to a nuclear fuel cladding comprising: i) a substrate containing a zirconium-based inner layer, optionally coated with at least one intermediate layer formed by at least one intermediate material selected from among tantalum, molybdenum, tungsten, niobium, vanadium, hafnium or the alloys thereof; and ii) at least one protective outer layer placed on the substrate and formed by a protective material selected from either chromium or an alloy of chromium. The nuclear fuel cladding produced using the method of the invention has improved resistance to oxidation/hydriding. The invention also relates to the method for the production of the nuclear fuel cladding by ion etching of the surface of the substrate and deposition of the outer layer on the substrate with a high power impulse magnetron sputtering method (HiPIMS), as well as to the use thereof to protect against oxidation and/or hydriding.
A process for the manufacture of a nuclear fuel cladding comprising i) a substrate containing a zirconium-based internal layer coated or not coated with at least one interposed layer placed over said internal layer and ii) at least one external layer placed over the substrate and composed of a protective material chosen from chromium or a chromium-based alloy;
A nuclear fuel cladding with an interface layer, comprising:
A composite nuclear fuel cladding comprising i) a substrate containing a zirconium-based internal layer and at least one interposed layer placed over said internal layer and composed of at least one interposed material chosen from tantalum, molybdenum, tungsten, vanadium, hafnium or their alloys and ii) at least one external layer placed over the substrate and composed of a protective material chosen from chromium or a chromium-based alloy.
Dependencies are inferred from the claim text.