Abstract: In a method for preparing an ester from an hydroxybenzoic acid and a fatty alcohol for use in a binder system for powder injection molding, transesterification of an ester of the hydroxybenzoic acid and a low alcohol using the fatty alcohol is carried out, the fatty alcohol and the ester of the hydroxybenzoic acid and the low alcohol forming a reaction mixture and being used in an essentially equimolar ratio. The transesterification is carried out at a temperature at which the ester of the hydroxybenzoic acid and the low alcohol and the fatty alcohol are present as a homogeneous melt. The binder system for a powder injection molding contains 80 to 98 wt. % of a metal powder and/or a ceramic powder and 1 to 19 wt. % of a polymeric binder component, and 1 to 19 wt. % of at least one ester prepared by the transesterification.

Abstract: In a method for preparing an ester from an hydroxybenzoic acid and a fatty alcohol for use in a binder system for powder injection molding, transesterification of an ester of the hydroxybenzoic acid and a low alcohol using the fatty alcohol is carried out, the fatty alcohol and the ester of the hydroxybenzoic acid and the low alcohol forming a reaction mixture and being used in an essentially equimolar ratio. The transesterification is carried out at a temperature at which the ester of the hydroxybenzoic acid and the low alcohol and the fatty alcohol are present as a homogeneous melt. The binder system for a powder injection molding contains 80 to 98 wt. % of a metal powder and/or a ceramic powder and 1 to 19 wt. % of a polymeric binder component, and 1 to 19 wt. % of at least one ester prepared by the transesterification.

Abstract: A rotor for a charging device may include a shaft, a turbine wheel and a compressor wheel. The turbine wheel may be connected to the shaft. The rotor may also include at least one of a metal or ceramic adapter connected to the turbine wheel or the shaft via an infiltration process.

Abstract: An actuator includes a transmission element configured to transmit a mechanical regulating signal, a guide element and a transmission element mounted on the guide element. The guide element has an inner surface facing the transmission element. The transmission element has an outer surface facing the guide element, wherein the guide element includes at least one radial groove.

Abstract: The present invention relates to an exhaust gas turbocharger having a turbine wheel that is rotatably mounted about an axis of rotation and a turbine housing. The turbine wheel expands a combustion engine exhaust gas while the turbine housing includes a high-pressure region and a low-pressure region. Additionally, the turbine wheel is arranged between the high-pressure region and the low-pressure region, and wherein the low-pressure region has an inner shell conducting the exhaust gas and an outer shell, which is arranged for forming an air gap insulation.

Abstract: An electrode is provided for a spark plug made of a base material and at least one additive material situated in the base material in a dispersedly distributed manner, which is intercalated in the base material, and is a metal oxide, and is characterized by a negative enthalpy of formation greater than 800 kJ/mol O2. The base material is an Au based or an Rh based material or is pure Au or Rh, the proportion of the additive material amounting to between 5 vol. % and 50 vol. %. Alternatively, Pt-based materials or pure Pt are provided as the base material, the proportion of the additive material at average particle diameters of the additive material between 5 ?m and 20 ?m amounting to between 21 vol. % and 50 vol.

Abstract: A method for manufacturing a composite component, a brake disk in particular, and a metal-ceramic component are described. In the method, a porous ceramic blank is produced and infiltrated with a metal melt. An alloy of copper and at least one additional metal is used as the metal melt for infiltration, the additional metal being converted by at least one reactive component of the blank in such a way that a pore space of a ceramic phase is filled essentially with pure copper.

Abstract: A spark plug for an internal combustion engine is proposed, having at least two electrodes (9, 11), one of which at least two electrodes is at least one middle electrode (11) and another electrode of the at least two electrodes is at least one ground electrode (9), and between the at least one ground electrode (9) and the at least one middle electrode (11), a spark gap (13) is formed. Each of the at least two electrodes (9, 11) has an electrode base body (93, 113). At least one electrode has a region (95, 115) that is highly resistant to electrode erosion and that forms at least a part of the end face, oriented toward the spark gap, of the electrode (97, 117). The highly electrode-erosion-resistant region (95, 115) comprises an alloy which has at least the elements iridium and nickel.

Abstract: The present invention relates to a method of fabrication and a product, which forms a composite body made of metal and a porous ceramic blank, which adjoins the metallic portion and is infiltrated by the metal, wherein a gradient in properties across the composite portion of the composite body is formed by a heat treatment that reduces some of the oxides across the thickness of the porous ceramic blank. In one embodiment, a gradient from substantial chemical reaction to incomplete chemical reaction of the reducible oxides of the blank with the infiltrated metal is formed inside the composite portion.

Abstract: A spark plug for an internal combustion engine is proposed, having at least two electrodes (9, 11), one of which at least two electrodes is at least one middle electrode (11) and another electrode of the at least two electrodes is at least one ground electrode (9), and between the at least one ground electrode (9) and the at least one middle electrode (11), a spark gap (13) is formed. Each of the at least two electrodes (9, 11) has an electrode base body (93, 113). At least one electrode has a region (95, 115) that is highly resistant to electrode erosion and that forms at least a part of the end face, oriented toward the spark gap, of the electrode (97, 117). The highly electrode-erosion-resistant-region (95, 115) comprises an alloy which has at least the elements iridium and nickel.