Seal systems for use in turbomachines and methods of fabricating the same

A seal system (200), for an apparatus that includes a rotatable portion with airfoils coupled thereto and a stationary portion with an inner surface (188), includes an abradable portion (202) including at least one abradable layer of an abradable material formed over the inner surface (188). The sea...

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Bibliographische Detailangaben
Hauptverfasser:	GIOVANNETTI IACOPO, GIANNOZZI MASSIMO, GRAY DENNIS MICHAEL, ANAND KRISHNAMURTHY, HASZ WAYNE CHARLES, THOMAS PAUL MATTHEW, NELSON WARREN ARTHUS, GHASRIPOOR FARSHAD, SHENG NUO, PICHE NICOLE BARBARA, LEBLANC LUC STEPHANE
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING 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 CYLINDERS DIFFUSION TREATMENT OF METALLIC MATERIAL ENGINE PLANTS IN GENERAL ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING METALLURGY NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES PISTONS SEALINGS STEAM ENGINES SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	A seal system (200), for an apparatus that includes a rotatable portion with airfoils coupled thereto and a stationary portion with an inner surface (188), includes an abradable portion (202) including at least one abradable layer of an abradable material formed over the inner surface (188). The seal system (200) also includes an abrading portion (204) disposed over at least a portion of a substrate of the airfoil. The abrading portion (204) includes at least one abrading layer (212) formed on at least a portion of the substrate and a plurality of abrasive particles (218) embedded within the abrading layer (212). The plurality of abrasive particles (218) includes at least one of tantalum carbide (TaC), aluminum oxide (Al2O3), and ziconia (ZrO2), cubic boron nitride (cBN) and Al2O3 in predetermined ratios, cBN, Al2O3 and ZrO2 in predetermined ratios, Al2O3 and ZrO2 fused together in predetermined ratios, and TaC and Al2O3 in predetermined ratios.