Recording a temperature reached by a part of turboshaft engine under operation, by mechanically treating the part, pre-oxidizing the part, and depositing a layer comprising a unit for indicating temperature reached by part under operation

• Main Authors: HARIVEL NADINE, ALICE, HELENE, HAMADI SARAH
• Format: Patent
• Language: English; French
• Published: 21.02.2014
• Subjects: ADHESIVES; BLASTING; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; CORRECTING FLUIDS; DYES; FILLING PASTES; HEATING; INDEXING SCHEME FOR ASPECTS RELATING TONON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES ORJET-PROPULSION PLANTS; INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUSSUBCLASSES OF CLASSES F01-F04; INKS; LIGHTING; MEASURING; MEASURING QUANTITY OF HEAT; MEASURING TEMPERATURE; MECHANICAL ENGINEERING; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PHYSICS; POLISHES; TESTING; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR; USE OF MATERIALS THEREFOR; WEAPONS; WOODSTAINS

The method comprises: mechanically treating a part (1); pre-oxidizing the part; and depositing a layer (3) comprising a unit for indicating a temperature reached by the part under operation. The layer comprising the indication unit is deposited by thermal projection by atmospheric hot plasma, and a chemical vapor deposition by an electron beam. The layer comprising the indication unit is a layer containing oxide deposited by a sol-gel. The unit for indicating the temperature of ceramic base is doped with phosphorus in order to emit photons by luminescence. The method comprises: mechanically treating a part (1); pre-oxidizing the part; and depositing a layer (3) comprising a unit for indicating a temperature reached by the part under operation. The layer comprising the indication unit is deposited by thermal projection by atmospheric hot plasma, and a chemical vapor deposition by an electron beam. The layer comprising the indication unit is a layer containing oxide deposited by a sol-gel. The layer deposited by the sol-gel undergoes a heat treatment. The unit for indicating the temperature of ceramic base is doped with phosphorus such as rare and/or metal oxides in order to emit photons by luminescence when the layer is illuminated by a light source. The part is mechanically treated by sanding with corundum before depositing the layer. The preoxidation step comprises subjecting the part to an oxidizing atmosphere and a temperature of 600-950[deg] C for 30-90 minutes. An independent claim is included for a part of turboshaft engine. L'invention concerne un procédé pour relever la température atteinte par une pièce (1), notamment de turbomachine, en fonctionnement, comprenant les étapes consistant à : - traiter mécaniquement la pièce (1), - préoxyder la pièce (1), - déposer une couche (3) comportant des moyens d'indication de la température atteinte par la pièce (1) en fonctionnement.