Abstract: An additive manufacturing method and machine for an object using at least one powder, capable of limiting risks of dissemination of the powder. The method including the following steps in succession: manufacture a solid block starting from the powder and a sublimatable material, load the solid block in a loading space of the machine; sublimate the material present in the solid block and recover the powder; and additive manufacturing of the object by stacking successive layers made using the powder recovered in the previous step.

Abstract: A method for making a feedthrough comprises a/positioning of a body comprising a metallic wall with an orifice passing straight through it on a tool base, preferably one made of graphite; b/placing of the outer portion of the tool around the body; c/insertion of one or more metallic pins in the orifice emerging from the wall and then filling the rest of the orifice with a frit of electrically insulating material; d/placing the upper portion of the tool forming a piston against a zone including the orifice filled with the frit of electrically insulating material, preferably a glass frit, and in which the one or more pins is (are) inserted ; e/application of a temperature and pressure cycle, and a displacement of the piston, to carry out a flash sintering process.

Abstract: A heat-sink device intended for at least one electronic component (12), includes: a heat-sink; a substrate (11) for the at least one electronic component (12), said substrate covering the heat-sink; and thermal coupling provided between the substrate and the heat-sink and made from a material different from that of the heat-sink. The heat-sink comprises of a set of independent fins (10), and the thermal-coupling (13) is made from a heat-conductive polymer material and also serve as mechanical coupling between the substrate (11) and the fins (10).

Abstract: An additive manufacturing method and machine for an object using at least one powder, capable of limiting risks of dissemination of the powder. The method including the following steps in succession: manufacture a solid block starting from the powder and a sublimatable material, load the solid block in a loading space of the machine; sublimate the material present in the solid block and recover the powder; and additive manufacturing of the object by stacking successive layers made using the powder recovered in the previous step.

Abstract: The invention relates to a method for manufacturing a molded object from a mold comprising an internal cavity comprising one or several compartments and at least one removable part present within said internal cavity, said object being in a cured organic or inorganic material, said method successively comprising at least one cycle of following steps: a) a step for completely filling at least one compartment of the internal cavity of the mold, said compartment having a shape corresponding to all or part of the object, which one wishes to obtain, with a liquid composition which is curable by chemical reaction in order to form said material, said composition comprising at least one solvent; b) a step for curing by chemical reaction said composition within said mold; c) a step for withdrawing at least one removable part of said mold; and d) a step for drying within said mold the cured composition obtained in b), wherein all or part of steps a) to d) may be repeated with a curable liquid composition either iden

Abstract: The invention first relates to a feedstock for PIM, including a metal or ceramic powder; a polymeric binder; metallic or ceramic fibers or nanofibers, the fibers or nanofibers being metallic when the powder is metallic, and the fibers or nanofibers being ceramic when the powder is ceramic. It also relates to the method for producing such a feedstock, as well as the method for producing parts by means of powder injection molding (PIM) using said feedstock.

Abstract: The invention relates to a feedstock for power injection molding, PIM, comprising: at least one inorganic powder, advantageously metallic or ceramic or made of cermet; a polymeric binder; organic fibres or yarns, advantageously polymeric, the fibres or yarns being made of a material different from that of the polymeric binder. It then relates to the method for producing such a feedstock, as well as the method for producing parts by means of the powder injection moulding (PIM) technique using said feedstock.

Abstract: The invention first relates to a feedstock for PIM, including a metal or ceramic powder; a polymeric binder; metallic or ceramic fibres or nanofibres, the fibres or nanofibres being metallic when the powder is metallic, and the fibres or nanofibres being ceramic when the powder is ceramic. It also relates to the method for producing such a feedstock, as well as the method for producing parts by means of powder injection moulding (PIM) using said feedstock.

Abstract: The present invention relates to a heat-sink device intended for at least one electronic component (12), including: heat-sink means; a substrate (11) for the at least one electronic component (12), said substrate covering the heat-sink means; and thermal coupling means provided between the substrate and the heat-sink means and made from a material different from that of the heat-sink means. According to the invention, the heat-sink means consist of a set of independent fins (10), and the thermal-coupling means (13) are made from a heat-conductive polymer material and also serve as mechanical coupling means between the substrate (11) and the fins (10).

Abstract: A filling device, enabling simultaneous filling with at least two granular materials, without mixing them, includes an inner hopper supplying a first type of material and an outer hopper supplying a second type of material, and a dispenser arranged downstream from the hoppers. The dispenser includes a central passageway arranged directly opposite the inner hopper, and a deflecting mechanism towards the exterior of the dispenser arranged directly opposite the outer hopper. The deflecting mechanism at least partially borders the central passageway. The dispenser is capable of rotating about a longitudinal axis, the direction of which is the mean direction of flow, in which the dispenser includes a central shaft including an upper end opposite the inner hopper forming a deflecting surface for the first type of material coming from the inner hopper.

Abstract: An assembly including a metal piece, a piece made of ceramic material, and at least one intermediate connection element assembled to each of the pieces by brazing. The intermediate connection element includes a deformable sheet presenting at least two flat zones brazed to respective ones of the pieces, the two flat zones being interconnected by a deformable zone presenting at least two free undulations oriented in alternation towards the metal piece and towards the piece made of ceramic material.

Abstract: A device for distributing granular materials in a recipient, particularly of complex shape intended to be arranged between a feed hopper and the recipient to be filled. The device includes a deflector, mobile in rotation around an axis, lining a passage linking the hopper to the recipient. The deflector is formed by at least one surface that may be inclined in relation to the axis of rotation approaching the axis in the direction of flow of the granules, or perpendicular to the axis. According to the speed of rotation, a certain quantity of granules is ejected by the deflector and another part passes directly in the passage.

Abstract: A device for filling a recipient with at least one material in a form of a powder, the device including: a filling channel configured to bring the material from a reserve of material to an entry opening of the recipient; and a pump that evacuates a pneumatic fluid contained in the recipient through at least one first evacuation duct and a second evacuation duct, wherein the at least one first evacuation duct is configured to connect an inside of the recipient to an environment outside of the recipient during a filling phase, the first evacuation duct being internal to the filling channel, and the second evacuation duct is configured to evacuate the pneumatic fluid before filling.

Abstract: The invention relates to a method for preparing a feedstock for injection moulding or for extrusion, consisting of inorganic powders combined with an organic, particularly polymeric binder. This method is characterized in that the constituent particles of the inorganic powders are subjected to a granulation step, prior to their mixing with the polymeric binder.

Abstract: A filling device, enabling simultaneous filling with at least two granular materials, without mixing them, includes an inner hopper supplying a first type of material and an outer hopper supplying a second type of material, and a dispenser arranged downstream from the hoppers. The dispenser includes a central passageway arranged directly opposite the inner hopper, and a deflecting mechanism towards the exterior of the dispenser arranged directly opposite the outer hopper. The deflecting mechanism at least partially borders the central passageway. The dispenser is capable of rotating about a longitudinal axis, the direction of which is the mean direction of flow, in which the dispenser includes a central shaft including an upper end opposite the inner hopper forming a deflecting surface for the first type of material coming from the inner hopper.

Abstract: The invention relates to a method for preparing a feedstock for injection moulding or for extrusion, consisting of inorganic powders combined with an organic, particularly polymeric binder. This method is characterized in that the constituent particles of the inorganic powders are subjected to a granulation step, prior to their mixing with the polymeric binder.

Abstract: An assembly including a metal piece, a piece made of ceramic material, and at least one intermediate connection element assembled to each of the pieces by brazing. The intermediate connection element includes a deformable sheet presenting at least two flat zones brazed to respective ones of the pieces, the two flat zones being interconnected by a deformable zone presenting at least two free undulations oriented in alternation towards the metal piece and towards the piece made of ceramic material.

Abstract: A device for distributing granular materials in a recipient, particularly of complex shape intended to be arranged between a feed hopper and the recipient to be filled. The device includes a deflector, mobile in rotation around an axis, lining a passage linking the hopper to the recipient. The deflector is formed by at least one surface that may be inclined in relation to the axis of rotation approaching the axis in the direction of flow of the granules, or perpendicular to the axis. According to the speed of rotation, a certain quantity of granules is ejected by the deflector and another part passes directly in the passage.

Abstract: “The present invention relates to a method for fabricating parts by an injection molding technique including preparing a feedstock—having at least one powder mixed with a polymer binder solubilized in a solvent, injecting the feedstock into the mold under pressure, debinding, and sintering where the feedstock is maintained at a temperature above a solvent vaporization temperature during the pressing.

Abstract: A device for filling recipients, in particular molds with a material in a form of powder with a mechanism to evacuate air contained in the mold, advantageously before and during the putting in place the powdered material in the mold.