METHOD OF PROVIDING PROTECTION BY ALUMINIZING METAL PARTS CONSTITUTED AT LEAST PARTIALLY BY HONEYCOMB STRUCTURE

PROBLEM TO BE SOLVED: To provide a method of protecting the whole of the exposed surfaces of parts constituted at least partially by a honeycomb structure by aluminizing, particularly, a method of protecting the whole of the surfaces of cells having the above honeycomb structure. SOLUTION: At least...

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Bibliographische Detailangaben
Hauptverfasser:	FOURNES JEAN PAUL, LEGER JACQUES, RICHIN CATHERINE
Format:	Patent
Sprache:	eng
Schlagworte:	AIR INTAKES FOR JET-PROPULSION PLANTS 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 COMBUSTION ENGINES CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS DIFFUSION TREATMENT OF METALLIC MATERIAL ENGINE PLANTS IN GENERAL GAS-TURBINE PLANTS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS 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 STEAM ENGINES SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method of protecting the whole of the exposed surfaces of parts constituted at least partially by a honeycomb structure by aluminizing, particularly, a method of protecting the whole of the surfaces of cells having the above honeycomb structure. SOLUTION: At least one gaseous precursor of the deposit to be made and comprising an aluminum compound is brought with the help of a carrier gas into contact with the surfaces of parts placed in an enclosure. The carrier gas is selected from helium and argon, and the pressure inside the enclosure is selected in such a manner that the mean free path of the carrier gas molecules is at least twice as long as that of argon molecules under atmospheric pressure. The method is particularly suitable for aluminizing a low pressure turbine ring sector of a turbomachine, the sector being provided with an abradable honeycomb coating. COPYRIGHT: (C)2003,JPO