Patent ID: 7762448

Claim:
A method for producing a composite body capable of withstanding high thermal stresses, the method which comprises: providing a high-temperature-resistant, metallic or nonmetallic component and a high-temperature-resistant, nonmetallic component; depositing a metallic barrier layer, configured to be impervious to a solder melt, of one or more carbide-forming elements selected from the group consisting of V, Nb, Ta, Cr, Mo, W, and alloys thereof, on a surface of each nonmetallic component to be soldered; and subsequently joining at least a part of the high-temperature-resistant, metallic or nonmetallic component and at least a part of a high-temperature-resistant, nonmetallic component to one another by high-temperature soldering with a solder material consisting of one or more elements selected from the group consisting of Ti, Zr, and Hf, wherein a content of Ti, Zr, or Hf is greater than 50% by weight; and adapting the soldering operation, the solder material, the barrier layer, and soldering conditions to one another such that, during the soldering operation, the metallic barrier layer remains at least partially in a solid state, and the barrier layer is still present after the soldering operation in a thickness of at least 10 μm at least over a majority of a soldering surface.