EP 2540973 A1 20130102 - Seal system for a gas turbine
Title (en)
Seal system for a gas turbine
Title (de)
Dichtungssystem für eine Gasturbine
Title (fr)
Système d'étanchéité pour turbine à gaz
Publication
Application
Priority
EP 11172105 A 20110630
Abstract (en)
An abradable seal system for a gas turbine comprises a rotor blade tip (7) with an abrasive coating system (9, 11) and a stationary heat shield ring (1) facing opposite to the blade tip (7) and coated with an abradable coating. The abrasive coating system comprises an oxidation resistant and/or corrosion resistant bond coat (9) and a thermal barrier coating (11) atop of the bond coat (9). The thermal barrier coating (11) is a ZrO 2 coating that is partially stabilized by Y 2 O 3 and free of vertical macrocracks.
IPC 8 full level
C23C 28/00 (2006.01); F01D 5/20 (2006.01); F01D 5/28 (2006.01); F01D 11/12 (2006.01)
CPC (source: EP)
C23C 4/02 (2013.01); C23C 28/30 (2013.01); C23C 28/321 (2013.01); C23C 28/3215 (2013.01); C23C 28/345 (2013.01); C23C 28/3455 (2013.01); F01D 5/20 (2013.01); F01D 5/288 (2013.01); F01D 11/122 (2013.01); F05D 2230/90 (2013.01); F05D 2260/95 (2013.01); F05D 2300/2118 (2013.01); F05D 2300/611 (2013.01)
Citation (applicant)
EP 0707091 A1 19960417 - PRAXAIR TECHNOLOGY INC [US]
Citation (search report)
- [X] US 2003138658 A1 20030724 - TAYLOR THOMAS ALAN [US], et al
- [Y] EP 2192098 A2 20100602 - ROLLS ROYCE CORP [US]
- [Y] WO 2011019486 A1 20110217 - PRAXAIR TECHNOLOGY INC [US], et al
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DOCDB simple family (application)
EP 11172105 A 20110630; EP 2012062818 W 20120702