Abstract: A sensor for a gas turbine includes a sensor element, including or consisting of a polymer-derived ceramic, and a pre-stressing device that is designed to pre-stress the sensor element against a surface. A method for producing a sensor for a gas turbine includes the following steps: providing a sensor element including or consisting of a polymer-derived ceramic, and providing a pre-stressing device that is designed to pre-stress the sensor element against a surface.

Abstract: The present invention relates to a process for the preparation of nitrides of the formula Ga1-xInxN, where 0.01?x?1, in which one or more compounds of the general formula, M(NR2)3, where all R, independently of one another, are H, linear or branched —C1-8-alkyl or —SiRx2, where Rx is linear or branched —C1-8-alkyl, and M is Ga, In or Ga1-xInx, are reacted with ammonia, where the one or more compounds M(NR2)3 are selected in such a way that the ratio 1?x Ga to x In also applies in these compounds.

Abstract: A ceramic composite material is described, which is obtainable by at least partial pyrolysis of a starting mixture or of a starting body containing a polymer precursor material. The starting mixture or the starting body contains boron in a proportion of 0.1 wt.-% to 60 wt.-%. In addition, a method for manufacturing such a ceramic composite material is described, a boron-containing starting mixture including a polymer precursor material being subjected to an at least partial pyrolysis. Finally, a sheathed-element glow plug including the ceramic composite material as an insulating layer and/or conductive layer is described.

Abstract: A compound having a space spinel structure and the formula Si3-x Cx N4 wherein 0<x?1. An example of the compound is spin el silicon carbonitride. The compound of the invention may be made by providing a silicon carbo-diimide compound and subjecting the compound to elevated temperature and pressure conditions.

Abstract: The present invention relates to boron-containing carbosilanes, a process for their preparation, boron-containing oligo- or polycarbosilazanes, a process for their preparation and their use and silicon borocarbonitride ceramics and a process for their preparation.

Abstract: Novel C/N-- and B/C/N polymers which can be obtained by reaction of (a) a carbodiimide having the formula R.sub.3 E--NCN--ER.sub.3, in which R includes a group selected from the group consisting of alkyl groups and aryl groups, and E comprises a component selected from the group consisting of Si, Ge, and Sn, and (b) a halogenotriazine. Methods for making and using said polymers.

Abstract: The present invention relates to novel SiCN gels, which are obtained by reacting silylcarbodiimides R.sub.3 Si--NCN--SiR.sub.3 (R=alkyl, aryl) with silanes RSiX.sub.3 (R=H, alkyl, aryl; X=F, Cl, Br, I), and the use thereof to produce non-oxidic silicon ceramics.

Abstract: Crack-free, dense and either amorphous or crystalline, nonoxide monolithic ceramic shaped articles are produced at relatively low temperatures, by shaping a powder (P) of an infusible, organometallic ceramic precursor polymer (Pi) into a green body having a relative density of at least 65%, and thence pyrolyzing such shaped green body.

Abstract: The invention relates to a novel sinterable ceramic powder, to its preparation and to its further processing to give a silicon nitride ceramic, and to this material itself and its use. The sinterable ceramic powder is produced by melting a polysilazane or dissolving it in an organic solvent, suspending a powdered sinter aid in this melt or solution, then pyrolyzing the melt, or the residue obtained after evaporation of the solvent, at 500.degree. to 1600.degree. C. in a protective gas atmosphere, the polysilazane eitherA) being obtainable by reacting at least one of the oligosilazanes of the formula (I) ##STR1## in which a, b, c and d are the mole fractions of the respective structural units and where 0.ltoreq.a.ltoreq.1, 0.ltoreq.b.ltoreq.1, 0.ltoreq.c.ltoreq.0.7, 0.ltoreq.d.ltoreq.0.7, 0.3.ltoreq.a+b, c+d.ltoreq.0.7 and n is approximately 2 to approximately 12, with at least one of the chlorosilanes R.sup.6 R.sup.7 SiCl.sub.2, R.sup.8 SiCl.sub.3, Cl.sub.2 R.sup.9 Si--CH.sub.2 CH.sub.2 --SiR.sup.9 Cl.sub.

Abstract: The present invention relates to an SiC powder suitable for the production of SiC sintered ceramics with compounds applied to its surface, these compounds being boron nitride and carbon; processes for production of the SiC powders; and the use of these powders to produce SiC sintered mouldings.