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1. (WO2018197114) SEALING SYSTEM FOR A ROTOR BLADE AND HOUSING

Pub. No.:    WO/2018/197114    International Application No.:    PCT/EP2018/057165
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Thu Mar 22 00:59:59 CET 2018
IPC: F01D 11/12
F01D 5/20
F01D 5/28
C04B 38/00
C23C 28/00
Applicants: SIEMENS AKTIENGESELLSCHAFT
Inventors: LADRU, Francis
SCHULZ, Thorsten
Title: SEALING SYSTEM FOR A ROTOR BLADE AND HOUSING
Abstract:
The invention relates to a ceramic sealing system between a rotor blade (120) and a housing (1''). By means of the combination of a small porous zirconium oxide layer (11) on a turbine rotor blade, which zirconium oxide layer faces a ceramic layer system (15', 15'') of higher porosity, durable sealing systems are achieved. The housing (1'') has a metal substrate (7), a metal adhesion-promoting layer (10), and a thick, outer, ceramic layer (15', 15'') based on zirconium oxide, in particular having a porosity ≥ 14%.