Abstract: In one example in accordance with the present disclosure, an additive manufacturing stage is described. The additive manufacturing stage includes a bed to define a volume where a three-dimensional object is to be formed. The additive manufacturing stage also includes an air-permeable platform on which build material is deposited. A vacuum system draws air resident in the build material down through the air-permeable platform.

Abstract: A process for coating a refractory alloy part is provided and includes coating an area of a refractory alloy part by means of a treatment composition including a type of preceramic polymer and a solvent, and heat treating the part coated with the treatment composition. The heat treating partially converts the preceramic polymer and forms a ceramic coating obtained by conversion, the ceramic coating protecting the refractory alloy from oxidation. The treatment composition also includes active fillers to form an alloy coating on a surface of the part by solid diffusion in addition to the ceramic coating obtained by conversion, and the alloy coating generates a protective oxide layer when subjected to oxidizing conditions.

Abstract: A process for coating a part by chemical vapor diffusion is provided and includes placing a powder mixture in a chamber, immersing the part partially in the powder mixture, and applying a heat treatment to the part. The powder mixture includes a first component and a second component forming a gaseous compound during the heat treatment so as to allow deposition of the second component on the part. The part includes a metal refractory allow and the second component forms a solid diffusion alloy by solid diffusion with a metal species of the refractory metal alloy to generate a coating. The solid diffusion allow generates a passivating oxide layer when subjected to oxidizing conditions.

Abstract: A process for coating a refractory alloy part is provided and includes coating an area of a refractory alloy part by means of a treatment composition including a type of preceramic polymer and a solvent, and heat treating the part coated with the treatment composition. The heat treating partially converts the preceramic polymer and forms a ceramic coating obtained by conversion, the ceramic coating protecting the refractory alloy from oxidation. The treatment composition also includes active fillers to form an alloy coating on a surface of the part by solid diffusion in addition to the ceramic coating obtained by conversion, and the alloy coating generates a protective oxide layer when subjected to oxidizing conditions.

Abstract: A process for coating a part by chemical vapor diffusion is provided and includes placing a powder mixture in a chamber, immersing the part partially in the powder mixture, and applying a heat treatment to the part. The powder mixture includes a first component and a second component forming a gaseous compound during the heat treatment so as to allow deposition of the second component on the part. The part includes a metal refractory allow and the second component forms a solid diffusion alloy by solid diffusion with a metal species of the refractory metal alloy to generate a coating. The solid diffusion allow generates a passivating oxide layer when subjected to oxidizing conditions.

Abstract: The invention relates to a component (8) comprising a substrate made of chromia-former metal alloy (82), the basic element of which is iron (Fe) or nickel (Ni), wherein the substrate has two main planar faces. According to the invention: one of the main planar faces is coated with a coating comprising a thick layer of ceramic (80), grooved to delimit channels (800) suitable for the distribution and/or collection of gases, such as H2O water vapour, H2 or air, and/or one of the main planar faces is coated with a thick metal layer (81), grooved to delimit channels (810) suitable for the distribution and/or collection of gases, such as H2O water vapour, H2, O2 or draining gas. The invention also relates to the associated production processes.

Abstract: The invention relates to a component (8) comprising a substrate made of chromia-former metal alloy (82), the basic element of which is iron (Fe) or nickel (Ni), wherein the substrate has two main planar faces. According to the invention: one of the main planar faces is coated with a coating comprising a thick layer of ceramic (80), grooved to delimit channels (800) suitable for the distribution and/or collection of gases, such as H2O water vapour, H2 or air, and/or one of the main planar faces is coated with a thick metal layer (81), grooved to delimit channels (810) suitable for the distribution and/or collection of gases, such as H2O water vapour, H2, O2 or draining gas. The invention also relates to the associated production processes.

Abstract: The invention relates to a method for recycling the electrolyte of a lithium-ion battery and a method for recycling lithium-ion batteries.

Abstract: The invention relates to a hydrometallurgical process which makes it possible to selectively recover at least one “heavy” rare earth metal, i.e. a rare earth metal with an atomic number at least equal to 62, that is in an acidic aqueous phase resulting from the treatment of spent or scrapped permanent magnets. It also relates to a hydrometallurgical process which makes it possible to selectively recover, on the one hand, at least one heavy rare earth metal present in an acidic aqueous phase resulting from the treatment of spent or scrapped permanent magnets and, on the other hand, at least one “light” rare earth metal, i.e. a rare earth metal with an atomic number at most equal to 61, that is also in this acidic aqueous phase.

Abstract: A isolating method including: (i) arranging material forming a magnetic phase as a demagnetised powder, having an average particle size no larger than 700 ?m without particles not making up the magnetic phase; (ii) dissolving the powder of step (i) in an acid medium with at least one oxidising agent in the presence of hydroxide ions, at a pH strictly lower than 7; (iii) precipitating the adjacent metal element(s) in the hydroxide state by adding to the solution obtained at the end of step (ii) an effective amount of hydroxylated base; (iv) isolating the metal hydroxide precipitate formed at the end of step (iii) and, when necessary, recovering same; (v) precipitating the rare earth elements in the oxalate state in the solution without adjacent metal element(s) and obtained at the end of step (iv); and (vi) recovering the rare earths in the precipitated state of rare earth oxalate.

Abstract: An adhesive composition includes a polymer, inorganic fillers, and at least one organic solvent. The polymer is at least one preceramic polymer, advantageously based on silicon. The fillers include one or a plurality of thermally conductive and electrically insulating inorganic fillers.

Abstract: The invention relates to a hydrometallurgical process which makes it possible to selectively recover at least one “heavy” rare earth metal, i.e. a rare earth metal with an atomic number at least equal to 62, that is in an acidic aqueous phase resulting from the treatment of spent or scrapped permanent magnets. It also relates to a hydrometallurgical process which makes it possible to selectively recover, on the one hand, at least one heavy rare earth metal present in an acidic aqueous phase resulting from the treatment of spent or scrapped permanent magnets and, on the other hand, at least one “light” rare earth metal, i.e. a rare earth metal with an atomic number at most equal to 61, that is also in this acidic aqueous phase.

Abstract: The invention relates to a method for recycling the electrolyte of a lithium-ion battery and a method for recycling lithium-ion batteries.

Abstract: The invention relates to a method for recycling lithium batteries and more particularly batteries of the Li-ion type and the electrodes of such batteries.

Abstract: A isolating method including: (i) arranging material forming a magnetic phase as a demagnetised powder, having an average particle size no larger than 700 ?m without particles not making up the magnetic phase; (ii) dissolving the powder of step (i) in an acid medium with at least one oxidising agent in the presence of hydroxide ions, at a pH strictly lower than 7; (iii) precipitating the adjacent metal element(s) in the hydroxide state by adding to the solution obtained at the end of step (ii) an effective amount of hydroxylated base; (iv) isolating the metal hydroxide precipitate formed at the end of step (iii) and, when necessary, recovering same; (v) precipitating the rare earth elements in the oxalate state in the solution without adjacent metal element(s) and obtained at the end of step (iv); and (vi) recovering the rare earths in the precipitated state of rare earth oxalate.

Abstract: The invention relates to a component (8) comprising a substrate made of chromia-former metal alloy (82), the basic element of which is iron (Fe) or nickel (Ni), wherein the substrate has two main planar faces. According to the invention:—one of the main planar faces is coated with a coating comprising a thick layer of ceramic (80), grooved to delimit channels (800) suitable for the distribution and/or collection of gases, such as H2O water vapour, H2 or air, and/or—one of the main planar faces is coated with a thick metal layer (81), grooved to delimit channels (810) suitable for the distribution and/or collection of gases, such as H2O water vapour, H2, O2 or draining gas. The invention also relates to the associated production processes.

Abstract: The invention aims at an aqueous ink for high-temperature electrochemical cell electrodes and/or electrolyte containing particles of at least one mineral filler, at least one binder, and at least one dispersant. It also concerns the electrode and the electrolyte using such an ink.

Abstract: The invention relates to a method for recycling lithium batteries and more particularly batteries of the Li-ion type and the electrodes of such batteries.

Abstract: A metal-supported electrochemical cell is provided. The cell may contain a porous metal support comprising a first- and a second-main surfaces, a porous thermomechanical adaptive layer on the second main surface, a porous layer that is a barrier against the diffusion of chromium on the porous thermomechanical adaptive layer, this porous barrier layer being in stabilised zirconia and/or substituted ceria, and in a mixed oxide of spinel structure, a porous hydrogen electrode layer on the porous barrier layer, a dense electrolyte layer on the porous hydrogen electrode layer; a dense or porous reaction barrier layer on the dense electrolyte layer, and a porous oxygen or air electrode layer on the reaction barrier layer. A method for fabricating a metal-supported electrochemical cell is also provided. The method may comprise a step for the simultaneous sintering of the green support and of all the previously deposited layers in the green state.

Abstract: It relates to a solid oxide fuel cell (SOFC) with internal reforming of hydrocarbons, in which said cell is a metal-supported cell comprising a porous metallic support comprising pores having walls, said porous support comprising a first main surface and a second main surface, an anode adjacent to said second main surface, an electrolyte adjacent to said anode, and a cathode adjacent to said electrolyte, a catalyst for reforming at least one hydrocarbon being deposited on the walls of the pores of the porous metallic support, and the amount and concentration of catalyst in the porous metallic support decreasing in a direction from the first main surface in the same direction as a flow direction of a hydrocarbon feed stream, along said first main surface on the outside of the cell.