Turbine blade

摘要

Turbine blade (1) has a heat insulation (2) formed as structured heat insulation (3) filled with a heat insulation material (5). Preferred Features: The structure of the heat insulation is made of a felt (3) or foamed material. The felt is made of short and/or long fibers manufactured from a metallic oxide, a non-metallic oxide or an oxidic or non-oxidic ceramic. The diameter of the fibers is 10-500 mu m. The thickness of the felt is 5-30% of the fiber material and the pore volume is 70-95%.