Abstract: A nuclear fusion reactor first wall component includes a copper alloy element, an intermediate metal layer made from niobium and a beryllium element, directly in contact with the intermediate metal layer. The intermediate niobium layer is further advantageously associated with a mechanical stress-reducing layer formed by a metal chosen from copper and nickel. This mechanical stress-reducing layer is in particular arranged between the intermediate niobium layer and the copper alloy element. Furthermore, when the mechanical stress-reducing layer is made from pure copper, a layer of pure nickel can be inserted between the niobium and the pure copper before diffusion welding. Such a component presents the advantage of having an improved thermal fatigue behavior while at the same time preventing the formation of intermetallic compounds at the junction between the beryllium and the copper alloy.

Abstract: A nuclear fusion reactor first wall component includes a copper alloy element, an intermediate metal layer made from niobium and a beryllium element, directly in contact with the intermediate metal layer. The intermediate niobium layer is further advantageously associated with a mechanical stress-reducing layer formed by a metal chosen from copper and nickel. This mechanical stress-reducing layer is in particular arranged between the intermediate niobium layer and the copper alloy element. Furthermore, when the mechanical stress-reducing layer is made from pure copper, a layer of pure nickel can be inserted between the niobium and the pure copper before diffusion welding. Such a component presents the advantage of having an improved thermal fatigue behaviour while at the same time preventing the formation of intermetallic compounds at the junction between the beryllium and the copper alloy.

Abstract: A device used for a process of coating fibers with a metal by a liquid method is disclosed. In this process, a fiber is drawn through a bath of molten liquid metal so as to be coated with the molten liquid metal. The liquid metal bath is maintained in a crucible of the “levitation” type, which at least partly eliminates contact between the liquid metal and the crucible. The bath is fed with metal, during the process, by a metal powder.

Abstract: A process of coating fibers with a metal by a liquid method is disclosed. In this process, a fiber is drawn through a bath of molten liquid metal so as to coated with the latter, the liquid metal bath being maintained in a crucible of the “levitation” type, which at least partly eliminates contact between the liquid metal and the crucible. The bath is fed with metal, during the process, by a metal powder. Accordingly, the molten metal bath is fed in a simple and effective manner.

Abstract: The invention relates to a process of coating fibers with a metal by a liquid method. In this process, a fiber (3) is drawn through a bath (15) of molten liquid metal so as to coated with the latter, the liquid metal bath (15) being maintained in a crucible (9) of the “levitation” type, which at least partly eliminates contact between the liquid metal and the crucible (9). The bath (15) is fed with metal, during the process, by a metal powder (16). Thanks to the invention, the molten metal bath is fed in a simple and effective manner.

Abstract: The invention relates to a method for metallic coating of fibers by liquid technique, in which a fiber, coated with a material forming a diffusion barrier with the metal, is drawn through a liquid metal bath to be coated therewith. The method is characterized in that prior to the passage of the fiber into the bath, the fiber is coated with a compound wettable by the metal. The coating of the fiber by the metal is facilitated by the presence of the compound, forming an interface wettable by the metal.

Abstract: The invention relates to a process of coating fibers with a metal by a liquid method. In this process, a fiber (3) is drawn through a bath (15) of molten liquid metal so as to coated with the latter, the liquid metal bath (15) being maintained in a crucible (9) of the “levitation” type, which at least partly eliminates contact between the liquid metal and the crucible (9). The bath (15) is fed with metal, during the process, by a metal powder (16). Thanks to the invention, the molten metal bath is fed in a simple and effective manner.