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 device for applying a directed contact pressure force to a multitude of samples. A first part of the device includes a multitude of sample receptacles that receive a multitude of joining surface modules of the same kind, and a second part of the device is connected to the first part in such a manner that a multitude of fluidically intercommunicating hydraulic cylinders in one of the two parts can load the joining surface modules simultaneously in a loading direction at a predetermined force that is substantially identical in respect to all samples.

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: The invention relates to a method for generating coherent-phase light having a predefinable frequency value (?Soll), comprising the steps of generating working light with a working frequency (?SL), generating a frequency comb (10), which is a light field that consists of equidistant coherent-phase spectral lines, selecting a comb line (having the index m) from the frequency comb (10) having a frequency (?m), generating a frequency shift (??) of the frequency comb (10) and/or the working frequency (?SL) by means of time-dependent phase settings (?S(t)) modulo a multiple of 2?, in particular of 2?, and phase-coupling the possibly frequency-shifted fields of the working light (?SL) and the one possibly frequency-shifted frequency comb line (?m), so that the frequencies thereof are rigidly phase-coupled via the frequency shift (??), and working light having the desired frequency (?Soll) is obtained.

Abstract: The invention relates to a method for generating coherent-phase light having a predefinable frequency value (?Soll), comprising the steps of generating working light with a working frequency (?SL), generating a frequency comb (10), which is a light field that consists of equidistant coherent-phase spectral lines, selecting a comb line (having the index m) from the frequency comb (10) having a frequency (?m), generating a frequency shift (??) of the frequency comb (10) and/or the working frequency (?SL) by means of time-dependent phase settings (?S(t)) modulo a multiple of 2?, in particular of 2?, and phase-coupling the possibly frequency-shifted fields of the working light (?SL) and the one possibly frequency-shifted frequency comb line (?m), so that the frequencies thereof are rigidly phase-coupled via the frequency shift (??), and working light having the desired frequency (?Soll) is obtained.

Abstract: The invention relates to a measuring arrangement comprising a sensor head (13) that can be displaced over a surface (11) at a distance therefrom in a scanning direction (R), a plurality of distance sensors which are suitable for distance measurement and are interspaced in the scanning direction in a fixed manner, a displacement device for displacing the sensor head (13) in such a way that points of the surface (11) are detected in successive scanning steps carried out by a plurality of distance sensors, and an evaluation device to which the output signals of the distance sensors are supplied. According to the invention, one such measuring arrangement is improved by an angle measuring device (14, 15) for determining an angle value of the sensor head (13) in relation to the scanning direction (R), and for forwarding said angle value to the evaluation device. In this way, systematic measuring errors can be eliminated for the reconstruction of a topography of the surface (11) in the scanning direction (R).