Improvements in cellular material and method for making

1,138,792. Turbine and compressor blade tip sealing: axial flow compressors. GENERAL ELECTRIC CO. July 13, 1967 [Jan. 3, 1967], No.32321/67. Heading F1C and F1T. [Also in Division C7] A cellular material comprising bonded spherical hollow particles of Al alloyed with a metal which forms aluminides i...

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Bibliographische Detailangaben
1. Verfasser:	BUTTS WILLIAM ROBERT
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS BLASTING CASTING CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL ENGINE PLANTS IN GENERAL FERROUS OR NON-FERROUS ALLOYS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL LIGHTING MACHINES OR ENGINES IN GENERAL MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER MECHANICAL ENGINEERING MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL METALLURGY NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES PERFORMING OPERATIONS POWDER METALLURGY PUNCHING METAL STEAM ENGINES SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ARTCOLLECTIONS [XRACs] AND DIGESTS TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS WEAPONS WORKING METALLIC POWDER WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
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Beschreibung
Zusammenfassung:	1,138,792. Turbine and compressor blade tip sealing: axial flow compressors. GENERAL ELECTRIC CO. July 13, 1967 [Jan. 3, 1967], No.32321/67. Heading F1C and F1T. [Also in Division C7] A cellular material comprising bonded spherical hollow particles of Al alloyed with a metal which forms aluminides is formed by heating at 1600‹- 2200‹F. a mass of spherical coated metal particles consisting of a core of Al and a coating of a metal such as Fe, Ni and Co into which the Al will diffuse, the Al forming 5-30% by weight of each particle, the heating time being sufficient to allow the diffusion of the Al into the coating and thus form a hollow particle. The coated Al powder may be mixed with 5-35% by weight of a bonding metal such as Ni, Cu, Ag or their alloys and an aqueous binder of ammonium alginate may be added. The cellular material is used as a seal co-operating with rotating blades or wheels in axial-flow compressors of gas turbine engines and in this application the coated Al powder or the mixture of coated powder and bonding metal is added as a filler to a honeycomb of (Registered Trade Mark) "Hastelloy" X alloy heated to 1600‹-2200‹F.