Use of powder metal sintering/diffusion bonding to enable applying silicon carbide or rhenium alloys to face seal rotors
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B22F-003/14
B22F-005/00
출원번호
US-0439637
(2003-05-15)
발명자
/ 주소
Giesler, William L.
Adams, Robbie J.
출원인 / 주소
Honeywell International, Inc.
대리인 / 주소
Ingrassia Fisher &
인용정보
피인용 횟수 :
6인용 특허 :
31
초록▼
A method for making aerospace face seal rotors reinforced by rhenium metal, alloy, or composite in combination with silicon carbide or other ceramic. The resulting rotor also is disclosed. Ceramic grains, preferably silicon carbide (SiC), are mixed with powdered metallic (PM) binder that may be base
A method for making aerospace face seal rotors reinforced by rhenium metal, alloy, or composite in combination with silicon carbide or other ceramic. The resulting rotor also is disclosed. Ceramic grains, preferably silicon carbide (SiC), are mixed with powdered metallic (PM) binder that may be based on a refractory metal, preferably rhenium. The mixture is applied to a rotor substrate. The combined ceramic-metal powder mixture is heated to sintering temperature under pressure to enable fusion of the ceramic in the resulting metal-based substrate. A load may then be applied under an elevated temperature. The resulting coated rotor can exhibit high hot hardness, increased durability and/or high hot wear resistance, as well as high thermal conductivity.
대표청구항▼
1. A method for manufacturing improved face seal rotors, the steps comprising:providing a rotor substrate; providing powdered ceramic; providing powdered metal; mixing the powdered ceramic with the powdered metal to provide a mixture; placing the mixture on the rotor substrate; heating the mixture t
1. A method for manufacturing improved face seal rotors, the steps comprising:providing a rotor substrate; providing powdered ceramic; providing powdered metal; mixing the powdered ceramic with the powdered metal to provide a mixture; placing the mixture on the rotor substrate; heating the mixture to a sintering temperature; and applying a load to the while the mixture has an elevated temperature. 2. A method for manufacturing improved face seal rotors as set forth in claim 1, wherein the rotor substrate further comprises steel.3. A method for manufacturing improved face seal rotors as set forth in claim 2, wherein the rotor substrate further comprises an aluminum alloy of steel.4. A method for manufacturing improved face seal rotors as set forth in claim 3, wherein the rotor substrate further comprises aluminum alloys of steel selected from the group consisting of 135M, Nitralloy 135M, Nitralloy EZ, Nitralloy G, Nitralloy N, SAE 7140, AMS 6470, AMS 6475, Nitralloy N135M, thermally conductive steels, and steels having at least 0.011% by weight of aluminum.5. A method for manufacturing improved face seal rotors as set forth in claim 1, wherein the powdered ceramic further comprises silicon carbide (SiC).6. A method for manufacturing improved face seal rotors as set forth in claim 1, wherein the powdered ceramic further comprises powdered ceramic selected from the group consisting of alumina, alumina titanate, aluminum nitride, and mixtures thereof, beryllium oxide, boron nitride, braided ceramic fibers, carbide/cobalt hardmetal, cast carbide, ceramic eutectic composites, coarse-grained tungsten, coated silicon nitride, cobalt oxide, conventional carburized tungsten carbide, diamond, entatite, fosterite, hot-press matrices, infiltration matrices, macrocrystalline tungsten carbide powder, macrocrystalline tungsten carbide sintered tungsten, metal matrix composites, multi-layered PVD coatings, nickel oxide, niobium carbide powder, physical vapor deposition coatings, reaction bonded silicon nitride, reaction bonded tungsten carbide, reaction bonded tungsten carbide and sintered tungsten carbide, silica zirconia, silicon carbide whiskers, silicon carbide fibers, silicon carbide whisker-reinforced alumina ceramic, silicon nitride, sintered tungsten carbide, tantalum carbide powder, tantalum niobium carbide powder, titanium carbide, titanium carbide-titanium nitride, titanium carbide-titanium nitride-based carbide and ceramic substrates, titanium carbide-titanium nitride-based carbide substrates, titanium carbide-titanium nitride-based ceramic substrates, titanium carbonitride powder, titanium diboride, titanium nitride powder, tungsten carbide macrocrystalline tungsten carbide, tungsten disulfide, tungsten metal powder, tungsten sulfide, tungsten titanium carbide powder, zirconia, and mixtures thereof.7. A method for manufacturing improved face seal rotor as set forth in claim 1, further comprising:the powdered metal being powdered refractory metal-based material. 8. A method for manufacturing improved face seal rotors as set forth in claim 7, further comprising:the powdered refractory metal being powdered rhenium. 9. A method for manufacturing improved face seal rotors as set forth in claim 7, further comprising:the powdered refractory metal being powdered rhenium-based material. 10. A method for manufacturing improved face seal rotors as set forth in claim 1, further comprising:the rotor substrate being of the same material as the mixture. 11. A method for manufacturing improved face seal rotors as set forth in claim 1, further comprising:mechanically bonding the mixture to the rotor substrate to provide enhanced retention of a coating formed by the mixture. 12. A method for manufacturing improved face seal rotors set forth in claim 11, wherein the step of mechanically bonding the mixture to the rotor substrate further comprises a step selected from the group consisting of: cutting a dovetail thread in the rotor substrate; grit blasting the rotor substrate; cutting a thread in the rotor substrate; and cutting a sawtooth thread in the rotor substrate.13. A method for manufacturing improved face seal rotors as set forth in claim 1, further comprising:chemically bonding the mixture to the rotor substrate. 14. A method for manufacturing improved face seal rotors as set forth in claim 13, farther comprising:enhancing retention of the mixture to the rotor substrate by plating with elements selected from the group consisting of nickel, chromium, cobalt, zirconium, vanadium, titanium, tantalum, silicon, scandium, rhodium, platinum, palladium, osmium, columbium, molybdenum, manganese, iridium, hafnium, iron, chromium, beryllium, and boron. 15. A method for manufacturing improved face seal rotors, the steps comprising:providing a steel rotors substrate; providing powdered silicon carbide (SiC) ceramic; providing powdered rhenium metal; mixing the powdered silicon carbide (SiC) with the powdered rhenium metal to provide a mixture; placing the mixture on the steel rotor substrate; heating the mixture to a sintering temperature; and applying a load to the mixture while the mixture has an elevated temperature.
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이 특허에 인용된 특허 (31)
Schtz Heinz-Eckert (Goslar DEX) Szesny Bernhard (Langelsheim DEX) Krismer Bruno E. (Goslar DEX), Agglomerated metal composite powders.
Sund, Steven E.; Gasdaska, Charles J.; Guiheen, James V.; Bruce, Lennox; Ullah, M. Rifat; Giesler, William L., Face seal assembly with composite rotor.
Schmitz Friedheim,DEX ; Czech Norbert,DEX, Protective coating for protecting a component from corrosion, oxidation and excessive thermal stress, process for produc.
Fletcher ; James C. Administrator of the National Aeronautics and Space ; Administration ; with respect to an invention of ; Honeycutt ; III ; Leroy ; Manning ; Jr. ; Charles R., Thermal shock and erosion resistant tantalum carbide ceramic material.
Chou, Chen-yu J.; Carrier, Charles W., System for manufacturing a rotor having an MMC ring component and an airfoil component having monolithic airfoils.
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