Abstract: A precursor diffusion device configured to diffuse a growth precursor towards an external growth surface included on an external growth member, the diffusion device including a container including at least one porous element having a porosity configured to allow or prevent the passage of a precursor fluid through a thickness of the porous element, the porous element being configured so that the precursor fluid which passes through the thickness of the porous element generates an aerosol by fragmentation of the precursor fluid, the aerosol being formed of droplets of the precursor fluid. Also, a method for depositing a layer on a growth surface by such a diffusion device.

Abstract: Composite nuclear component comprising i) a support containing a substrate comprising a metallic material and a ceramic material (1), the substrate (1) being coated or not coated with an interposed layer (3) positioned between the substrate (1) and at least one protective layer (2) and ii) the protective layer (2) composed of a protective material comprising chromium; the process comprising a step a) of vaporizing a mother solution followed by a step b) of depositing the protective layer (2) onto the support via a DLI-MOCVD deposition process. The composite nuclear component has improved resistance to oxidation and/or migration of undesired material. The invention also relates to the use of the composite nuclear component for combating oxidation and/or degradation of the ceramic material contained in the substrate.

Abstract: Process for manufacturing a composite nuclear component comprising i) a support containing a substrate comprising a metallic material and a ceramic material (1), the substrate (1) being coated or not coated with an interposed layer (3) positioned between the substrate (1) and at least one protective layer (2) and ii) the protective layer (2) composed of a protective material comprising chromium; the process comprising a step a) of vaporizing a mother solution followed by a step b) of depositing the protective layer (2) onto the support via a DLI-MOCVD deposition process.

Abstract: Process for manufacturing a nuclear component comprising i) a support containing a substrate based on a metal (1), the substrate (1) being coated or not coated with an interposed layer (3) positioned between the substrate (1) and at least one protective layer (2) and ii) the protective layer (2) composed of a protective material comprising chromium; the process comprising a step a) of vaporizing a mother solution followed by a step b) of depositing the protective layer (2) onto the support via a process of chemical vapor deposition of an organometallic compound by direct liquid injection (DLI-MOCVD). Nuclear component comprising i) a support containing a substrate based on a metal, the substrate (1) being coated or not coated with an interposed layer (3) positioned between the substrate (1) and at least one protective layer (2) and ii) the protective layer (2) composed of a protective material comprising chromium.

Abstract: A metallic filter (1) includes a microstructured architecture (2) defined in a three-dimensional space having orthogonal axes, microstructured architecture (2) includes a metallic network (10) formed by a plurality of longitudinal connecting strands (12), namely extending along a longitudinal axis direction (X), and a network (20) of pores formed of a plurality of longitudinal interstices (22) located along connecting strands (12). Each longitudinal interstice corresponding to a subset of pores (24) of the network (20) of pores. The subset of pores (24) for which the pores are aligned along the longitudinal axis (X), the longitudinal interstices (22) thereby defining an axis of anisotropy of the microstructured architecture.

Abstract: Process for manufacturing a nuclear component comprising i) a support containing a substrate based on a metal (1), the substrate (1) being coated or not coated with an interposed layer (3) positioned between the substrate (1) and at least one protective layer (2) and ii) the protective layer (2) composed of a protective material comprising chromium; the process comprising a step a) of vaporizing a mother solution followed by a step b) of depositing the protective layer (2) onto the support via a process of chemical vapor deposition of an organometallic compound by direct liquid injection (DLI-MOCVD).

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.

Abstract: Process for manufacturing a nuclear component that includes i) a support containing a substrate based on a metal, the substrate being coated or not coated with as interposed layer positioned between the substrate and at least one protective layer and ii) the protective layer composed of a protective material including partially metastable chromium; the process includes a step a) of vaporizing a mother solution followed by a step b) of depositing the protective layer onto the support via a process of chemical vapor deposition of an organometallic compound by direct liquid injection (DLI-MOCVD).

Abstract: Process for the chemical vapor deposition by DLI-MOCVD on a substrate of a protective coating composed of at least one protective layer comprising a transition metal M: a) having available, in a feed tank, a mother solution containing a hydrocarbon solvent devoid of oxygen atom and a precursor of bis(arene) type containing the transition metal M to be deposited, and, if appropriate, a carbon-incorporation inhibitor; b) vaporizing said mother solution and introducing it into a CVD reactor in order to carry out the deposition of the protective layer on said substrate; c) collecting, at the outlet of the reactor, a fraction of the gaseous effluent comprising the unconsumed precursor, the aromatic byproducts of the precursor and the solvent, these entities together forming a daughter solution, and; d) pouring the daughter solution thus obtained into the feed tank in order to obtain a new mother solution capable of being used in step a).

Abstract: Process for manufacturing a nuclear component that includes i) a support containing a substrate based on a metal, the substrate being coated or not coated with an interposed layer positioned between the substrate and at least one protective layer and ii) the protective layer composed of a protective material including partially metastable chromium; the process includes a step a) of vaporizing a mother solution followed by a step b) of depositing the protective layer onto the support via a process of chemical vapor deposition of an organometallic compound by direct liquid injection (DLI-MOCVD).

Abstract: Process for manufacturing a nuclear component comprising i) a support containing a substrate based on a metal (1), the substrate (1) being coated or not coated with an interposed layer (3) positioned between the substrate (1) and at least one protective layer (2) and ii) the protective layer (2) composed of a protective material comprising amorphous chromium carbide; the process comprising a step a) of vaporizing a mother solution followed by a step b) of depositing the protective layer (2) onto the support via a process of chemical vapor deposition of an organometallic compound by direct liquid injection (DLI-MOCVD). Nuclear component comprising i) a support containing a substrate based on a metal, the substrate (1) being coated or not coated with an interposed layer (3) positioned between the substrate (1) and at least one protective layer (2) and ii) the protective layer (2) composed of a protective material comprising amorphous chromium carbide.

Abstract: Process for manufacturing a nuclear component comprising i) a support containing a substrate based on a metal (1), the substrate (1) being coated or not coated with an interposed layer (3) positioned between the substrate (1) and at least one protective layer (2) and ii) the protective layer (2) composed of a protective material comprising amorphous chromium carbide; the process comprising a step a) of vaporizing a mother solution followed by a step b) of depositing the protective layer (2) onto the support via a process of chemical vapor deposition of an organometallic compound by direct liquid injection (DLI-MOCVD).

Abstract: Process for manufacturing a nuclear component comprising i) a support containing a substrate based on a metal (1), the substrate (1) being coated or not coated with an interposed layer (3) positioned between the substrate (1) and at least one protective layer (2) and ii) the protective layer (2) composed of a protective material comprising partially metastable chromium; the process comprising a step a) of vaporizing a mother solution followed by a step b) of depositing the protective layer (2) onto the support via a process of chemical vapor deposition of an organometallic compound by direct liquid injection (DLI-MOCVD). Nuclear component comprising i) a support containing a substrate based on a metal, the substrate (1) being coated or not coated with an interposed layer (3) positioned between the substrate (1) and at least one protective layer (2) and ii) the protective layer (2) composed of a protective material comprising partially metastable chromium.

Abstract: Process for the chemical vapor deposition by DLI-MOCVD on a substrate of a protective coating composed of at least one protective layer comprising a transition metal M: a) having available, in a feed tank, a mother solution containing a hydrocarbon solvent devoid of oxygen atom and a precursor of bis(arene) type containing the transition metal M to be deposited, and, if appropriate, a carbon-incorporation inhibitor; b) vaporizing said mother solution and introducing it into a CVD reactor in order to carry out the deposition of the protective layer on said substrate; c) collecting, at the outlet of the reactor, a fraction of the gaseous effluent comprising the unconsumed precursor, the aromatic byproducts of the precursor and the solvent, these entities together forming a daughter solution, and; d) pouring the daughter solution thus obtained into the feed tank in order to obtain a new mother solution capable of being used in step a).

Abstract: Process for manufacturing a nuclear component comprising i) a support containing a substrate based on a metal (1), the substrate (1) being coated or not coated with an interposed layer (3) positioned between the substrate (1) and at least one protective layer (2) and ii) the protective layer (2) composed of a protective material comprising chromium; the process comprising a step a) of vaporizing a mother solution followed by a step b) of depositing the protective layer (2) onto the support via a process of chemical vapor deposition of an organometallic compound by direct liquid injection (DLI-MOCVD). Nuclear component comprising i) a support containing a substrate based on a metal, the substrate (1) being coated or not coated with an interposed layer (3) positioned between the substrate (1) and at least one protective layer (2) and ii) the protective layer (2) composed of a protective material comprising chromium.

Abstract: Process for manufacturing a nuclear component comprising i) a support containing a substrate based on a metal (1), the substrate (1) being coated or not coated with an interposed layer (3) positioned between the substrate (1) and at least one protective layer (2) and ii) the protective layer (2) composed of a protective material comprising amorphous chromium carbide; the process comprising a step a) of vaporizing a mother solution followed by a step b) of depositing the protective layer (2) onto the support via a process of chemical vapor deposition of an organometallic compound by direct liquid injection (DLI-MOCVD). Nuclear component comprising i) a support containing a substrate based on a metal, the substrate (1) being coated or not coated with an interposed layer (3) positioned between the substrate (1) and at least one protective layer (2) and ii) the protective layer (2) composed of a protective material comprising amorphous chromium carbide.

Abstract: Process for manufacturing a composite nuclear component comprising i) a support containing a substrate comprising a metallic material and a ceramic material (1), the substrate (1) being coated or not coated with an interposed layer (3) positioned between the substrate (1) and at least one protective layer (2) and ii) the protective layer (2) composed of a protective material comprising chromium; the process comprising a step a) of vaporizing a mother solution followed by a step b) of depositing the protective layer (2) onto the support via a DLI-MOCVD deposition process.

Abstract: Process for the chemical vapor deposition by DLI-MOCVD on a substrate of a protective coating composed of at least one protective layer comprising a transition metal M: a) having available, in a feed tank, a mother solution containing a hydrocarbon solvent devoid of oxygen atom and a precursor of bis(arene) type containing the transition metal M to be deposited, and, if appropriate, a carbon-incorporation inhibitor; b) vaporizing said mother solution and introducing it into a CVD reactor in order to carry out the deposition of the protective layer on said substrate; c) collecting, at the outlet of the reactor, a fraction of the gaseous effluent comprising the unconsumed precursor, the aromatic byproducts of the precursor and the solvent, these entities together forming a daughter solution, and; d) pouring the daughter solution thus obtained into the feed tank in order to obtain a new mother solution capable of being used in step a).