Title:
TURBINE CLEARANCE CONTROL COATINGS AND METHOD
Document Type and Number:
WIPO Patent Application WO/2017/080645
Kind Code:
A8
Abstract:
The present invention discloses a turbine engine with at least a high pressure and a low pressure turbine section comprising a casing and at least one turbine blade rotatably mounted within the casing wherein at least part of the inner surface of the casing is covered with shrouds as abradables to provide clearance control between the inner surface and the tip of the at least one blade and wherein the tip of the blade is coated with a hard PVD coating, characterized in that the shroud material of at least the high pressure and/or the low pressure section comprises a porous ceramic based material and the hard PVD coating on the tip of the blade essentially consists of a droplet free nitride coating.
Inventors:
WILSON SCOTT (CH)
ACIKGOZ DOROKIN CANET (CH)
ROVERE FLORIAN (US)
JARRY OLIVIER (DE)
NESTLER MONTIA (US)
ACIKGOZ DOROKIN CANET (CH)
ROVERE FLORIAN (US)
JARRY OLIVIER (DE)
NESTLER MONTIA (US)
Application Number:
PCT/EP2016/001854
Publication Date:
December 21, 2017
Filing Date:
November 09, 2016
Export Citation:
Assignee:
OERLIKON SURFACE SOLUTIONS AG PFÄFFIKON (CH)
International Classes:
C23C14/06; C23C14/34; C23C14/35; F01D5/28; F01D11/12
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