[특허]Abradable turbine air seal

Abradable turbine air seal 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F01D-011/12
출원번호	US-0749750 (2010-03-30)
등록번호	US-9598972 (2017-03-21)
발명자 / 주소	Strock, Christopher W.
출원인 / 주소	United Technologies Corporation
대리인 / 주소	Carlson, Gaskey & Olds, P.C.
인용정보	피인용 횟수 : 0 인용 특허 : 25

초록

An abradable seal for a gas turbine engine includes a metal alloy and a plurality of pores in the metal alloy. The plurality of pores have a diameter of approximately 1 to 10 microns.

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1. An abradable seal for a gas turbine engine comprising: a metal alloy, wherein the metal alloy is MCrAlY, and M is a metal, Cr is chromium, Al is aluminum and Y is yttrium; anda plurality of pores in the metal alloy, wherein the plurality of pores have a diameter of approximately 1 to 10 microns. 2. The abradable seal as recited in claim 1 wherein approximately 30 to 50% of an abradable seal is the metal alloy and approximately 50 to 70% of the abradable seal is the plurality of pores. 3. The abradable seal as recited in claim 1 wherein the metal is one of nickel and cobalt. 4. The abradable seal as recited in claim 1 wherein a fugitive filler is mixed with the metal alloy, and the fugitive filler is burned away to form the plurality of pores. 5. The abradable seal as recited in claim 4 wherein the fugitive filler is one of polymethylmethacrylate, polyester, and polyvinyl chloride. 6. The abradable seal as recited in claim 4 wherein the metal alloy is refined to a size of 1 to 25 microns and the fugitive filler is refined to a size of 0.5 to 25 microns prior to formation of an abradable seal. 7. The abradable seal as recited in claim 1 wherein the metal alloy and a fugitive filler are applied simultaneously to the component of the gas turbine engine. 8. A gas turbine engine comprising: a compressor to compress air, wherein the compressor includes alternating rows of rotating compressor blades and static vanes;a casing to house at least the compressor; andan abradable seal on an inner surface of the casing, wherein tips of the rotating compressor blades engage the abradable seal, the abradable seal includes a metal alloy and a plurality of pores in the metal alloy, the metal alloy is MCrAlY, M is a metal, Cr is chromium, Al is aluminum and Y is yttrium, and the plurality of pores have a diameter of approximately 1to 10 microns. 9. The gas turbine engine as recited in claim 8 wherein a fugitive filler is mixed with the metal alloy, and the fugitive filler is burned away to form the plurality of pores, and the fugitive filler is one of polymethylmethacrylate, polyester, and polyvinyl chloride. 10. The gas turbine engine as recited in claim 9 wherein the metal alloy is refined to a size of 1 to 25 microns and the fugitive filler is refined to a size of 0.5 to 25 microns prior to formation of an abradable seal. 11. The gas turbine engine as recited in claim 8 including an abradable inner air seal on a free end of the plurality of static vanes. 12. The gas turbine engine as recited in claim 11 including a projection on a rotor shaft that engages the abradable inner air seal. 13. A method of forming an abradable seal for a gas turbine engine, the method comprising the steps of: applying an abradable seal to a component of a gas turbine engine, wherein the abradable seal includes a metal alloy and a plurality of pores in the metal alloy, wherein the plurality of pores have a diameter of approximately 1 to 10 microns, the metal alloy is MCrAlY, and M is a metal, Cr is chromium, Al is aluminum and Y is yttrium. 14. The method as recited in claim 13 wherein the abradable seal is applied by thermal spraying. 15. The method as recited in claim 14 including the step of adding a fugitive filler to the metal alloy. 16. The method as recited in claim 15 wherein the abradable seal is heated to a temperature between 400 and 900° F. to melt and burn away the fugitive filler to form the plurality of pores in the metal alloy. 17. The method as recited in claim 15 including the step of machining the metal alloy and the fugitive filler prior to the step of applying to reduce a particle size. 18. The method as recited in claim 15 including a step of refining the metal alloy to have a particle size of 1 to 25 microns and a step of refining the fugitive filler to have a particle size of 0.5 to 25 microns before the step of applying the abradable seal. 19. The method as recited in claim 13 wherein the abradable seal is applied by a foaming metal process. 20. The method as recited in claim 13 wherein the abradable seal is applied by a powder metallurgy process.

이 특허에 인용된 특허 (25)

Mason Stephen,GB2 ; Percival Michael J. L.,GB2 ; Merrill Gary B.,GB2 ; Doleman Paul A.,GB2, Abradable composition, a method of manufacturing an abradable composition and a gas turbine engine having an abradable.
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Mason Stephen,GBX ; Percival Michael J L,GBX ; Merrill Gary B.,GBX ; Doleman Paul A.,GBX, Abradable composition, a method of manufacturing an abradable composition and a gas turbine engine having an abradable.
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Bosna Alexander A. (135 Summit Rd. Malvern PA 19355) Riccio Louis M. (161 Hollow Rd. Malvern PA 19355), Abradable non-metallic seal for rotating turbine engine.
상세보기
Bosna Alexander A. (135 Summit Rd. Malvern PA 19355) Riccio Louis M. (P.O. Box 81 DeVault PA 19432), Abradable non-metallic seal for rotating turbine engines.
상세보기
Sanders, Stuart A.; Stackhouse, Kirk D.; O'Connor, Lisa V., Abradable seal having improved durability.
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William John Dalzell, Jr. ; Stuart Alan Sanders ; George Lee Crawford ; Frederick Clell Walden ; William J. Woodard, Abradable seal having improved properties.
상세보기
Walden Frederick Clell ; Crawford George Lee ; Dalzell ; Jr. William John, Abradable seal having improved properties and method of producing seal.
상세보기
Terazawa Masatoshi (Kyoto JPX) Inoue Toshisada (Kyoto JPX), Abrasive tape.
상세보기
Shiembob Lawrence T. (Rocky Hill CT), Abrasive/abradable gas path seal system.
상세보기
Freling Melvin ; Gupta Dinesh K. ; Lagueux Ken ; DeMasi-Marcin Jeanine T., Columnar zirconium oxide abrasive coating for a gas turbine engine seal system.
상세보기
Sporer, Dieter R.; Taeck, Ulrike; Dorfman, Mitchell R.; Nicoll, Andrew R.; Giannozzi, Massimo; Giovannetti, Iacopo, Dysprosia stabilized zirconia abradable.
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Murakami Shinji (Kyoto JPX) Horiuchi Hikaru (Nara JPX) Miyagawa Jiro (Hyogo JPX) Furukawa Yoriyasu (Hyogo JPX), Foamed abrasive element and method of producing the same.
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Xie, Liangde; Dorfman, Mitchell; Schmid, Richard; Doesburg, Jacobus C.; Gold, Matthew, High purity ceramic abradable coatings.
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Jarrabet Gregory P. (DeLand FL) Lu Lixion (DeLand FL), Impermeable, abradable seal and method for the production thereof.
상세보기
Packer Louis L. (Enfield CT) Janowsky Glenn T. (Coventry CT), Method and apparatus for measuring the density and hardness of porous plasma sprayed coatings.
상세보기
Sileo Gerard A. ; Appleby John W. ; Narsavage Stephen T. ; Alent Francis X. ; Davis Charles G., Method for producing an abradable seal.
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Pettit ; Jr Harold W. (West Palm Beach FL) Davis Charles G. (Jupiter FL) Walden Frederick C. (Jensen Beach FL), Multiple port plasma spray apparatus and method for providing sprayed abradable coatings.
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Sileo Gerard A. (Jupiter FL) Appleby John W. (Palm Beach Gardens FL) Narsavage Stephen T. (Jupiter FL) Alent Francis X. (Port St. Lucie FL) Davis Charles G. (Jupiter FL), Plasma sprayed abradable seals for gas turbine engines.
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Eaton Harry E. (Woodstock CT) Novak Richard C. (Glastonbury CT), Porous metal structures made by thermal spraying fugitive material and metal.
상세보기
Hopkins, Noel P, Seal between relatively moveable members.
상세보기
Forrester James M. (Centerville OH) Love Bradley R. (Altharetta GA) Baldwin Jack W. (West Chester OH), Seal including a non-metallic abradable material.
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Frank J. Hermanek, Self-bonding MCrAly powder.
상세보기
Strock, Christopher W., Ternary carbide and nitride thermal spray abradable seal material.
상세보기
Hajmrle,Karel; Fiala,Petr, Thermal spray composition and method of deposition for abradable seals.
상세보기
Fiala, Petr; Chilkowich, Anthony Peter; Hajmrle, Karel, Thermal spray compositions for abradable seals.
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