Investigation of the influence of the stoichiometric composition of the coating and heat treatment modes on the phase composition of coatings of the Y-Al-O system
The paper presents the results of studies of coatings of the Y-Al-O system deposited by the vacuum-arc method with simultaneous deposition from two electric arc evaporators with single-component Y and Al cathodes. Three different deposition modes were selected. After coating deposition, the samples were annealed in a vacuum furnace at 800 and at 1200 °C to determine the effect of annealing temperature on phase formation. In all modes of heat treatment, the YAlO3 phase is formed. With an increase in temperature, more complex compounds Y3Al5O12(YAG) and Y4Al2O9(YAM) are formed. X-ray diffraction analysis showed that the heat treatment temperature and deposition mode affect the phase composition of the coating, it was also found that after deposition the coating has an amorphous structure. The structure was studied using a scanning electron microscope. The diffusion of the coating sublayer into the base is observed on samples that were annealed at a temperature of 1200 °C.
Keywords
vacuum arc deposition,
multilayer coatings,
thermal barrier coatings,
plasma treatmentAuthors
| Nazarov A.Yu. | Ufa State Aviation Technical University | nazarov_almaz15@mail.ru |
| Khusainova A.M. | Ufa State Aviation Technical University | ahusainova@bk.ru |
| Maslov A.A. | Ufa State Aviation Technical University | alexey.maslov2011@gmail.com |
| Ramazanov K.N. | Ufa State Aviation Technical University | ramazanov.kn@ugatu.su |
| Syrtanov M.S. | National Research Tomsk Polytechnic University | maxim-syrtanov@mail.ru |
| Nikolaev A.A. | Ufa State Aviation Technical University | nikolaev.aa@ugatu.su |
| Tulina A.A. | Ufa State Aviation Technical University | angelatool@yandex.ru |
| Vardanyan E.L. | Ufa State Aviation Technical University | |
Всего: 8
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