Abstract: A method for producing an adhesive connection between a workpiece having a metal surface and a workpiece having a plastic surface with the steps of providing a workpiece having a metal surface that has a coating which includes a thermoplastic, at least at a melt surface; providing a workpiece having a thermoplastic surface; placing the melt surface of the first workpiece having the metal surface and the workpiece having the thermoplastic surface against each other; and welding the workpiece having a metal surface and the non-metallic workpiece having the thermoplastic surface at the melt surface by exposure to ultrasonic.

Abstract: A part which is extremely high-temperature resistant and has an extremely high-temperature resistant coating having at least one silicate, the coating being stable at an operating temperature of more than 1,000° C. up to 2,000° C. For an extremely high-temperature resistant part having an extremely high-temperature resistant coating, which is stable at operating temperatures of over 1000° C. and can be applied simply and economically, it is provided that a coating means including a silicate or a mixture of silicates and water or solvent be used and be baked at temperatures of from 300° C. to 2000° C.

Abstract: The invention relates to a method for producing an adhesive connection between workpieces, comprising the steps of: providing a workpiece having a metal surface, said workpiece comprising a coating at least on a melt surface, said coating comprising a thermoplastic; providing a workpiece having a thermoplastic surface; placing the melt surface and the workpiece having the thermoplastic surface against each other, welding the workpiece having a metal surface and the workpiece having the thermoplastic surface to the melt surface under the effect of ultrasonics.