Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Commissariat a L'energie Atomique

Institut National Polytechnique De Toulouse

Frédéric Schuster

Fernando Lomello

Alexandre Michau

Michel Pons

Francis Maury

Raphaël Boichot

Hicham Maskrot

Patrick David

Yann Leconte

Dominique Porterat

Pierre-François Giroux

Alain Billard

Thierry Piquero

Marion Le Flem

Jean-Christophe Brachet

Martine Mayne

Matthieu Le Saux

Olivier Hercher

Elodie Vasquez

Khalil Abdelkebir

Julien Martegoutte

Isabel Idarraga-Trujillo

The invention is directed to a nuclear reactor 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) a protective layer composed of a protective material, including partially metastable chromium, coating the support.

Nuclear reactor component having a coating of partially metastable chromium

Composite nuclear component comprising i) a support containing a substrate comprising a metallic material and a ceramic material (), 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 comprising chromium; the process comprising a step a) of vaporizing a mother solution followed by a step b) of depositing the protective layer () 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.

Composite nuclear component, DLI-MOCVD method for producing same, and uses for controlling oxidation/hydridation

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

Metallic filter with microstructured architecture of controlled porosity and process for manufacturing such a filter

A method for producing a reinforced alloy powder containing a metal matrix in which crystalline oxide particles are dispersed, including: (i) providing a powder mixture including a parent metal powder including a master alloy for forming the metal matrix and an additional powder including an intermediate; (ii) milling the powder mixture by a mechanical synthesis process to make a precursor powder; and (iii) subjecting the precursor powder to a thermal plasma generated by a plasma torch including a plasma gas. The master alloy is iron-based, nickel-based, or aluminum-based. The intermediate is at least one of YFe, YO, FeO, FeTi, FeCrWTi, TiH, TiO, AlO, HfO, SiO, ZrO, ThO, and MgO. In (iii), the precursor powder is injected into the plasma torch at a flow rate of 10-30 g/min, a power of the plasma torch is 20-40 kW, and a pressure in a reaction chamber of the plasma torch is 25-100 kPa.

ODS alloy powder, method for producing same by means of plasma treatment, and use thereof

Process for manufacturing a composite nuclear component comprising i) a support containing a substrate comprising a metallic material and a ceramic material (), 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 comprising chromium; the process comprising a step a) of vaporizing a mother solution followed by a step b) of depositing the protective layer () onto the support via a DLI-MOCVD deposition process. Composite nuclear component comprising i) a support containing a substrate comprising a metallic material and a ceramic material (), 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 comprising chromium; the process comprising a step a) of vaporizing a mother solution followed by a step b) of depositing the protective layer () 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.

Process for manufacturing a nuclear component comprising 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 comprising chromium; the process comprising 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).

Process of manufacture a nuclear component with metal substrate by DLI-MOCVD and method against oxidation/hydriding of nuclear component

A composite nuclear reactor component comprises a support and a protective layer (). The support contains a substrate () based on a metal. The substrate is coated with an interposed layer () positioned between the substrate () and the protective layer (). The protective layer () 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.

Nuclear reactor component having a coating of amorphous chromium carbide

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:

Method for depositing a coating by DLI-MOCVD with direct recycling of the precursor compound

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).

Nuclear component with metastable Cr coating, DLI-MOCVD method for producing same, and uses for controlling oxidation/hydridation

Process for manufacturing a nuclear component comprising 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 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 () onto the support via a process of chemical vapor deposition of an organometallic compound by direct liquid injection (DLI-MOCVD).

Method of using DLI-MOCVD to provide a nuclear reactor component with a coating of amorphous chromium carbide

Method for preparing carbon nanotubes or nitrogen-doped carbon nanotubes by pyrolysis, in a reaction chamber, of a liquid containing at least one liquid hydrocarbon precursor of carbon or at least one liquid compound precursor of carbon and nitrogen consisting of carbon atoms, nitrogen atoms and optionally hydrogen atoms and/or atoms of other chemical elements such as oxygen, and optionally at least one metal compound precursor of a catalyst metal, in which said liquid is formed under pressure into finely divided liquid particles such as droplets by a specific injection system, preferably a periodic injection system, and the finely divided particles, such as droplets, formed in this way are conveyed by a carrier gas stream and introduced into the reaction chamber, where the deposition and growth of the carbon nanotubes or nitrogen-doped carbon nanotubes take place.

Growing community of inventors

St-Germain-en-Laye, France

Frédéric Schuster