METHOD OF COMBINATION HEAT-RESISTANT COATING ON TURBINE BLADES OF GAS-TURBINE ENGINE

FIELD: metallurgy. ^ SUBSTANCE: method includes chrome-calorising in powder composition, following thermo-vacuum treatment by means of tempering, ceramic layer spatter ZrO2-8Y2O3 on front end edges of blades by electron-beam method and diffusion annealing for final formation of coating structure. Be...

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Hauptverfasser:	PANKOV VLADIMIR PETROVICH, PANKOV DENIS VLADIMIROVICH, KOLOMYTSEV PETR TIMOFEEVICH
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	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 INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL METALLURGY SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION
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Zusammenfassung:	FIELD: metallurgy. ^ SUBSTANCE: method includes chrome-calorising in powder composition, following thermo-vacuum treatment by means of tempering, ceramic layer spatter ZrO2-8Y2O3 on front end edges of blades by electron-beam method and diffusion annealing for final formation of coating structure. Before the homogenising annealing on ceramic layer ZrO2-8Y2O3 by means of electron-beam method is spread ceramic layer ZrO2-11Y2O3-40Al2O3 of thickness 10-15 micrometer. Homogenising annealing is implemented with forming of coating structure on front end edges of blades, containing of [ZrO2-11Y2O3-40Al2O3]-(ZrO2-8Y2O3) - beta+gamma' - phase and turning into beta+gamma' - phase at the rest of blades areas. ^ EFFECT: increasing of durability and reliability enhancement of turbine blades. ^ 2 dwg, 1 ex