Abstract: A thermoelectric component includes a first and a second element which, in the vicinity of a contact point, are in contact with each other, e.g., in the form of a thermal contact. Furthermore, in this connection, first element and/or second element have a ceramic material at least in one vicinity of contact point. The component may be suitable as a thermocouple for measuring temperature based on the Seebeck effect, or for use in a Peltier element as a thermoelectric heating element or cooling element based on the Peltier effect.

Abstract: A ceramic composite material, for example, a ceramic molded body or a layer obtained by pyrolysis of a starting mixture, containing at least one polymer precursor material and at least one filler, which has an average particle size of less than 200 nm. Such a composite material may be used, for example, for producing fibers, filters, catalyst support materials, ceramic sheathed-element glow plugs, metal-containing reactive composite materials, porous protective shells for sensors, ceramic or partially ceramic coatings or microstructured ceramic components.

Abstract: A piezoelectric ceramic material having the molar composition Pb(1+c)−x−(3/2a)−1/2(x·b)A1xA2a(Zry(1−x·b−x·z)Ti(1−y)(1−x·b−x·w))(B1bB2zB3w)xO3 where A1 is selected from the group Ca, Mg, Sr, Ba, or their mixtures, A2 is selected from the group of rare-earth elements or their mixtures, B1 is selected from the group Nb, Ta, or Sb or their mixtures, B2 is Cu or a mixture of Cu with at least one element selected from the group Zn, Ni, Co, or Fe, and B3 is Fe, and where the following applies: 0.001≦a≦0.05; 0.05≦b≦0.90; 0≦c≦0.04; 0.005≦x≦0.03; 0.5≦y≦0.55; 0.05≦z≦0.90; 0≦w≦0.5. Furthermore, an electroceramic multilayer component is described having insulating layers containing such a material.

Abstract: A sheathed-element glow plug to be mounted in a combustion chamber is proposed, a rod-shaped heating element being situated in a concentric bore hole of the housing. The heating element has a first current-carrying layer, a second current-carrying layer, and an insulating layer, the insulating layer separating the first current-carrying layer and the second current-carrying layer. The first current-carrying layer and the second current-carrying layer being connected at the end of the heating element on the combustion chamber side by a conducting-layer crosspiece. The first current-carrying layer and the second current-carrying layer are different lengths, the cross section of the first current-carrying layer in a first section at the end of the heating element away from the combustion chamber being greater than the cross section of its remaining length, and the second current-carrying layer not extending into the first section.

Abstract: A sintered, magnetically soft composite is proposed, especially for use in solenoid valves, and a process for producing such a composite, in which initially a starting mixture from which the magnetically soft composite is formed after sintering is produced, having a ferromagnetic, especially powdery first starting component (11) as main constituent, and a ferritic second starting component (12) as secondary constituent, as well as possibly a pressing aid. After the starting mixture is sintered, the second starting component (12) is present in the produced composite at least largely as grain boundary phase. The proposed manufacturing process includes the process steps: provision of the starting mixture; mixing of the starting mixture; compression of the starting mixture in a cavity mold under increased pressure; removal of the binder from the compressed starting mixture; and sintering of the compressed starting mixture to form the composite.

Abstract: A ceramic sheathed-element glow plug is proposed in which a metallic tubular holder holds a ceramic U-shaped heating device in a cantilevered fashion at its combustion chamber side end and has a terminal stud for applying a voltage to the ceramic heating device on the end remote from the combustion chamber. At its end enclosed by the holder, the ceramic heating device has a segment of greatest diameter and is coated with an insulating layer which has recesses for an electrical contacting. One recess is provided at the end of the ceramic heating device remote from the combustion chamber and a second recess is provided on the external wall of the ceramic heating device. A for an electrically conductive sealing compound is provided between the external wall of the ceramic heating device and the internal wall of the holder.

Abstract: A piezoelectric ceramic material having the molar composition Pb(1+c)−x−(3/2a)−1/2(x·b)A1xA2a (Zry(1−x−b−x·z)Ti(1−y)(1−x·b−x·w))(B1bB2zB3w)xO3 is described

Abstract: An atomizer disk (23) has at least one inlet (40) and at least one outlet (42) and a complete passage for a fluid between the inlet (40) and the outlet (42). A flow rate sensor (50, 51, 50′, 51′, 150, 151) is integrated into the atomizer disk (23) upstream from a metering cross section of the fluid passage. In this way, the flow through the atomizer disk (23) is controllable in flow operation and is actively regulatable at any time.

Abstract: A sheathed-element glow plug to be mounted in a combustion chamber is proposed, a rod-shaped heating element being situated in a concentric bore hole of the housing. The heating element has a first current-carrying layer (11), a second current-carrying layer (12), and an insulating layer (15), the insulating layer (15) separating the first current-carrying layer (11) and the second current-carrying layer (12). The first current-carrying layer (11) and the second current-carrying layer (12) being connected at the end of the heating element on the combustion chamber side by a conducting-layer crosspiece (13). The first current-carrying layer (11) and the second current-carrying layer (12) are different lengths, the cross section of the first current-carrying layer (11) in a first section (21) at the end of the heating element away from the combustion chamber being greater than the cross section of its remaining length, and the second current-carrying layer (12) not extending into the first section (21).

Abstract: A thermoelectric component (5) is proposed, which has a first and a second element (10, 11) which, in the vicinity of a contact point (12), are in contact with each other, particularly in the form of a thermal contact. Furthermore, in this connection, first element (10) and/or second element (11) have a ceramic material at least in one vicinity of contact point (12). The proposed component (5) is especially suitable as a thermocouple for measuring temperature based on the Seebeck effect, or for use in a Peltier element as a thermoelectric heating element or cooling element based on the Peltier effect.

Abstract: A ceramic composite material, for example, a ceramic molded body or a layer obtained by pyrolysis of a starting mixture, containing at least one polymer precursor material and at least one filler, which has an average particle size of less than 200 nm. Such a composite material may be used, for example, for producing fibers, filters, catalyst support materials, ceramic sheathed-element glow plugs, metal-containing reactive composite materials, porous protective shells for sensors, ceramic or partially ceramic coatings or microstructured ceramic components.

Abstract: A polymer compound containing a ceramic powder and a polymer is described, the ceramic powder having a specific surface area of more than 1.8·108 m2/m3 and constituting more than 5 vol. % of the polymer compound, the polymer being shear resistant, and the pore sizes in the polymer compound being 3-15 nm. Furthermore, a method for manufacturing this polymer compound, its use, and a sintered body manufactured therefrom are also described.

Abstract: A ceramic sheathed element glow plug has a tubular metal casing holding a ceramic U-shaped heating device cantilevered at its end facing the combustion chamber, and on the end remote from the combustion chamber, it has a terminal pin for applying a voltage to the ceramic heating device. In the metal casing, a ceramic bushing and a ring follow the ceramic heating device at the end remote from the combustion chamber.

Abstract: A method for producing shaped bodies from hard ferrites, includes (a) providing a powder of hard ferrite material having a fine particle size; (b) adding to the powder a plastifying and bonding agent which comprises (a) at least one of cyclododecane, cyclododecanol, and stearyl alcohol and (b) stearic acid to provide a mixture; (c) shaping the mixture into a blank; (d) heating at a temperature effective to remove the plastifying and bonding agent from the blank; and (e) subsequently heating the blank to a temperature effective to sinter the powder. The method is suitable for the production of magnets, in particular segmental magnets.

Abstract: A sheathed type glow plug preheats the combustion chamber mixture of an auto-ignition internal combustion engine. The sheathed type glow plug comprises a ceramic heating apparatus; the resistance of the ceramic heating apparatus is increased by a reduction in cross section at the point which is most accessible to the combustion chamber mixture.

Abstract: A ceramic electric resistor is proposed which can be made by means of ceramizing at least one organo-silicon polymer and at least one filler. The filler comprises at least one high-melting electrically conductive component, with the filler portion amounting to 20 to 50 vol. % relative to the solvent-free polymer-filler mixture. The specific electrical resistance can be set by varying the filler portion. The ceramic electric resistor is particularly suited as heating conductor for pencil-type glow plugs.