RUNNING-IN LINING FOR A TURBO-MACHINE AND PROCESS FOR PRODUCING IT.

摘要

PCT No. PCT/EP92/01812 Sec. 371 Date May 17, 1993 Sec. 102(e) Date May 17, 1993 PCT Filed Aug. 8, 1992 PCT Pub. No. WO93/06341 PCT Pub. Date Apr. 1, 1993.An abradable layer for labyrinth seals of a turbo-engine, particularly a gas turbine is provided. The labyrinth is made of a layered composite material with a core and a shell and embedments. A process for the manufacturing of this abradable layer is provided. In this case, the core is made of a felted or three-dimensionally crosslinked fiber body made of iron base, nickel base or cobalt base alloys and the shell consists of one or several precious metals or precious-metal alloys. Each core is completely surrounded by the shell material, in which case the embedments consist of oxidation-stable sliding materials of the oxide, carbide or nitride group with a hexagonal crystal lattice layer structure.