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Title: Turbine bucket for use in gas turbine engines and methods for fabricating the same

Patent ·
OSTI ID:1133683

A turbine bucket for use with a turbine engine. The turbine bucket includes an airfoil that extends between a root end and a tip end. The airfoil includes an outer wall that defines a cavity that extends from the root end to the tip end. The outer wall includes a first ceramic matrix composite (CMC) substrate that extends a first distance from the root end to the tip end. An inner wall is positioned within the cavity. The inner wall includes a second CMC substrate that extends a second distance from the root end towards the tip end that is different than the first distance.

Research Organization:
National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
FC26-05NT42643
Assignee:
8,740,571
Patent Number(s):
8,740,571
Application Number:
13/042,034
OSTI ID:
1133683
Country of Publication:
United States
Language:
English

References (23)

Method of manufacture of hollow pieces patent July 1976
Composite rotor blade patent September 1978
Method of making an airfoil patent April 1986
Composite gas turbine blade and method of manufacturing same patent September 1989
Wear resistant, abrasive laser-engraved ceramic or metallic carbide surfaces for rotary labyrinth seal members patent December 1989
Turbine rotor blade tip coated with alumina-zirconia ceramic patent October 1991
Method of manufacturing a hollow silicon carbide fiber reinforced silicon carbide matrix component patent January 1995
Turbine blade squealer tip peripheral end wall with cooling passage arrangement patent August 1997
Abrasive/abradable gas path seal system patent August 1999
Thermal barrier coated squealer tip cavity patent May 2001
Environmentally resistant squealer tips and method for making patent October 2002
Foil formed structure for turbine airfoil tip patent October 2003
Turbine blade or turbine vane made of a ceramic foam joined to a metallic nonfoam, and preparation thereof patent November 2003
Ceramic matrix composite gas turbine vane patent March 2004
Ceramic matrix composite structure having integral cooling passages and method of manufacture patent June 2004
Turbine blade with recessed squealer tip and shelf patent January 2006
Lamellate CMC structure with interlock to metallic support structure patent July 2007
Composite tip shroud ring patent July 2008
Composite blading member and method for making patent March 2009
Use of biased fabric to improve properties of SiC/SiC ceramic composites for turbine engine components patent August 2009
Turbine blade with TBC removed from blade tip region patent January 2010
Methodology and tooling arrangements for increasing interlaminar shear strength in a ceramic matrix composite structure patent August 2012
High temperature abradable coatings patent-application July 2005

Cited By (4)

Cold spray method for producing gas turbine blade tip patent-application October 2007
Turbine blade with ceramic tip patent-application December 2007
Fan blade made of a textile composite material patent-application August 2008
Method and system for manufacturing a blade patent-application February 2010

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