Abstract: Disclosed embodiments relate to gelling aqueous ceramic slurries with temperature using laser-assisted free-forming to provide a break-through of rapidly making ceramics from slurries and computer assisted design files. Methods according to various embodiments are superior to any other since no toxic materials are used. The slurries are made with edible and safe compounds.

Abstract: Method for additive manufacturing of a metallic component includes providing a metallic powder; providing and/or producing a metallic support structure on a build platform, wherein the metallic support structure has at least one detachment point having an electrical resistance different than an electrical resistance of an adjacent section of the support structure and an electrical resistance of an adjacent section of the metallic component; consolidating the metallic powder with formation of the metallic component and, optionally, with formation of the metallic support structure at least in sections, wherein the metallic support structure connects the metallic component to the build platform; releasing the metallic component from the metallic support structure by bringing about an electrical current in the detachment point.

Abstract: A method for the additive production of a ceramic main part has the following steps: providing a slip of ceramic base material particles suspended in a liquid phase; producing a slip layer; orienting the radiation of a laser light source onto a section of the slip layer; evaporating liquid phase out of the slip layer in the section of the slip layer onto which the radiation of the laser light source is oriented or was oriented; forming a section of the ceramic main part in the slip layer in a sinter-free manner; optionally repeating the steps of producing a slip layer, orienting the radiation, evaporating the liquid phase, and forming a section of the main part in a sinter-free manner until the ceramic main part is provided; and separating the ceramic main part from the slip.

Abstract: The invention relates to an additive production method involving the production of a layer of geometrically compact particles, having the following steps: a) providing a particle layer depositing arrangement, comprising a first and a second semi-chamber, wherein a partition separates the first semi-chamber from the second semi-chamber, and the partition is permeable for a dispersion medium and impermeable for particles dispersed in the dispersion medium; b) providing a particle dispersion comprising the dispersion medium and particles dispersed therein in the first semi-chamber, the particle dispersion being distributed substantially homogenously in the first semi-chamber; c) generating a pressure gradient between the first and the second semi-chamber such that the pressure gradient in the first semi-chamber causes a particle dispersion flow directed towards the partition; and d) depositing a particle aggregate material comprising geometrically compact particles on the partition by transporting a dispersion a

Abstract: The invention relates to an additive production method involving the production of a layer of geometrically compact particles, having the following steps: a) providing a particle layer depositing arrangement, comprising a first and a second semi-chamber, wherein a partition separates the first semi-chamber from the second semi-chamber, and the partition is permeable for a dispersion medium and impermeable for particles dispersed in the dispersion medium; b) providing a particle dispersion comprising the dispersion medium and particles dispersed therein in the first semi-chamber, the particle dispersion being distributed substantially homogenously in the first semi-chamber; c) generating a pressure gradient between the first and the second semi-chamber such that the pressure gradient in the first semi-chamber causes a particle dispersion flow directed towards the partition; and d) depositing a particle aggregate material comprising geometrically compact particles on the partition by transporting a dispersion a

Abstract: The invention relates to an additive production method involving the production of a layer of geometrically compact particles, having the following steps: a) providing a particle layer depositing arrangement, comprising a first and a second semi-chamber, wherein a partition separates the first semi-chamber from the second semi-chamber, and the partition is permeable for a dispersion medium and impermeable for particles dispersed in the dispersion medium; b) providing a particle dispersion comprising the dispersion medium and particles dispersed therein in the first semi-chamber, the particle dispersion being distributed substantially homogenously in the first semi-chamber; c) generating a pressure gradient between the first and the second semi-chamber such that the pressure gradient in the first semi-chamber causes a particle dispersion flow directed towards the partition; and d) depositing a particle aggregate material comprising geometrically compact particles on the partition by transporting a dispersion a

Abstract: A method for the additive production of a ceramic main part has the following steps: providing a slip of ceramic base material particles suspended in a liquid phase; producing a slip layer; orienting the radiation of a laser light source onto a section of the slip layer; evaporating liquid phase out of the slip layer in the section of the slip layer onto which the radiation of the laser light source is oriented or was oriented; forming a section of the ceramic main part in the slip layer in a sinter-free manner; optionally repeating the steps of producing a slip layer, orienting the radiation, evaporating the liquid phase, and forming a section of the main part in a sinter-free manner until the ceramic main part is provided; and separating the ceramic main part from the slip.

Abstract: A method for producing a molded body is proposed, comprising: applying a layer of particles and applying a binder and curing a molded body; and a device for producing a metallic or ceramic molded body, having a storage volume, which is configured for receiving a suspension of metallic or ceramic particles that are dispersed in a suspension fluid, a layer-forming application device, which is configured for removing an amount of suspension repeatedly from the storage volume and transferring it into a working volume and applying it there as a layer, a dehumidifying device, which is configured for dehumidifying the applied layer in the working volume, a binder application device, which is configured for applying a binder locally to the dehumidified layer in accordance with a layer model of the molded body to be produced, in such a way that particles in the dehumidified layer are adhesively bonded locally to one another and optionally in addition to particles of at least one layer lying under the dehumidified laye

Abstract: A sinterable and/or fusible ceramic mass is disclosed, having a long-term stable compound of crystalline phases of apatite, wollastonite, titanite and optionally cristobalite, which is stabilized by a glass phase, and a production process therefor. The ceramic mass can be obtained by sintering a mixture comprising at least the constituents SiO2, CaO, P2O5, MgO, CaF2 and TiO2, on their own or in combination with at least one alkali oxide, the alkali oxide being chosen from NaO2 and K2O. The invention further relates to uses of the sintered material in the form of shaped articles for strengthening, cleaning, roughening or polishing surfaces of medical implants or as a final prosthesis.

Abstract: The invention relates to a device and a method for stabilizing a powder bed by means of low pressure for an additive manufacturing method, wherein the device comprises: a container open at least on one side, comprising a bottom, at least one side wall and a container opening; a filter in or above the bottom and/or in the at least one side wall, wherein an area occupied by the filter corresponds to the area of the bottom or the area of the side wall and wherein the filter is substantially impermeable to a powder comprising the powder bed; and a connection at the bottom and/or at the side wall of the container or on a side of the filter facing away from the container opening, wherein the connection is suitable for connection to a suction pump, such that a powder bed arranged in the container is pressed against the filter and stabilized by means of a vacuum produced by the suction pump.

Abstract: A sinterable and/or fusible ceramic mass is disclosed, having a long-term stable compound of crystalline phases of apatite, wollastonite, titanite and optionally cristobalite, which is stabilized by a glass phase, and a production process therefor. The ceramic mass can be obtained by sintering a mixture comprising at least the constituents SiO2, CaO, P2O5, MgO, CaF2 and TiO2, on their own or in combination with at least one alkali oxide, the alkali oxide being chosen from NaO2 and K2O. The invention further relates to uses of the sintered material in the form of shaped articles for strengthening, cleaning, roughening or polishing surfaces of medical implants or as a final prosthesis.

Abstract: The invention relates to a device and a method for stabilizing a powder bed by means of low pressure for an additive manufacturing method, wherein the device comprises: a container open at least on one side, comprising a bottom, at least one side wall and a container opening; a filter in or above the bottom and/or in the at least one side wall, wherein an area occupied by the filter corresponds to the area of the bottom or the area of the side wall and wherein the filter is substantially impermeable to a powder comprising the powder bed; and a connection at the bottom and/or at the side wall of the container or on a side of the filter facing away from the container opening, wherein the connection is suitable for connection to a suction pump, such that a powder bed arranged in the container is pressed against the filter and stabilized by means of a vacuum produced by the suction pump.

Abstract: A method for producing a moulded body is proposed, comprising: applying a layer of particles and applying a binder and curing a moulded body; and a device for producing a metallic or ceramic moulded body, having a storage volume, which is configured for receiving a suspension of metallic or ceramic particles that are dispersed in a suspension fluid, a layer-forming application device, which is configured for removing an amount of suspension repeatedly from the storage volume and transferring it into a working volume and applying it there as a layer, a dehumidfying device, which is configured for dehumidifying the applied layer in the working volume, a binder application device, which is configured for applying a binder locally to the dehumidified layer in accordance with a layer model of the moulded body to be produced, in such a way that particles in the dehumidified layer are adhesively bonded locally to one another and optionally in addition to particles of at least one layer lying under the dehumidified l

Abstract: The invention relates to an acoustically active device (1) comprising a substrate (2) that is transparent at least in a viewing region, comprising at least one first electrode (3) that lies on the substrate (2), comprising a piezoelectric layer (4) that lies on the at least one first electrode (3), and comprising at least one second electrode (5) that lies on the piezoelectric layer (4). The at least one first electrode (3) and the at least one second electrode (5) are transparent conductive oxide layers, and the piezoelectric layer (4) is made of a transparent piezoelectric material that extends over the entire surface of the viewing region.

Abstract: The present invention relates to a method for dividing a semiconductor film formed on a substrate into plural regions by multiple laser beam irradiation using a sequence of at least two laser beam treatments affecting essentially a same area of said film. Except of a final laser beam treatment, the treatments of said sequence of at least two laser beam treatments are used for a conditioning of the treated film area which is to be removed. Said final laser beam treatment is applied to actually remove material in order to form a groove. Further, the invention relates to an arrangement for dividing a semiconductor film formed on a substrate into plural regions by multiple laser beam irradiation using a sequence of at least two laser beam treatments affecting essentially a same area of said film.

Abstract: The invention relates, inter alia, to a method for the production of a ceramic shaped body (22), comprising the following steps: production or provision of a green body (10) having a structured surface region (12), irradiation of at least the structured surface region (12), so that the green body (10) is consolidated in the region of a volume zone (16) including the structured surface region (12), but is not consolidated or is consolidated to only a lesser degree in volume zones further from the surface, separation of the consolidated volume zone (16) including the structured surface region (12) from parts of the green body (10) which have not been consolidated or have been consolidated to only a lesser degree, and optionally scouring of the consolidated volume zone (16) obtained in this way.

Abstract: A method of making a structure having an optimized sterical shape of a material 4 comprises the steps of forming a pre-form 1 of the structure of the material 4, setting geometric boundary conditions for the material 4 being in a state in which it is able to rearrange under the influence of internal tensions in the volume of the pre-form 1 so that the material rearranges itself into the structure in a self-organized way, and transferring the rearranged material 4 into a state in which the rearrangement of the material 4 is conserved.

Abstract: A process for producing an SiO2 shaped body which is at least partially vitrified, wherein an amorphous, porous SiO2 green body is sintered or vitrified by contactless heating by means of radiation, while avoiding contamination to the SiO2 shaped body with foreign atoms, wherein the radiation used is the beam of a laser at a subatmospheric pressure below 1000 mbar.

Abstract: Silicone nitride coated shaped bodies of silica are prepared by coating a silica green body with silicon nitride or a precursor thereof, followed by sintering the silicone nitride coating by means of a laser beam. The shaped bodies are especially useful as “solar crucibles” in production of polycrystalline silicon for solar cells.

Abstract: A process for producing an SiO2 shaped body which is at least partially vitrified, wherein an amorphous, porous SiO2 green body is sintered or vitrified by contactless heating by means of radiation, while avoiding contamination to the SiO2 shaped body with foreign atoms, wherein the radiation used is the beam of a laser at a subatmospheric pressure below 1000 mbar.