Investigation on microstructure and oxidation behavior of Cr-modified aluminide coating on γ-TiAl alloys
Microstructure and oxidation behavior of aluminide coating has been investigated. The layers were examined by optical microscopy, scanning electron microscopy (SEM) equipped with EDS and X-ray diffraction method. The isothermal oxidation behaviors of samples were investigated at 950°C for 200 h. The...
Збережено в:
| Видавець: | Фізико-механічний інститут ім. Г.В. Карпенка НАН України |
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| Дата: | 2011 |
| Автори: | , , , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Фізико-механічний інститут ім. Г.В. Карпенка НАН України
2011
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| Назва видання: | Фізико-хімічна механіка матеріалів |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/138345 |
| Теги: |
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| Цитувати: | Investigation on microstructure and oxidation behavior of Cr-modified aluminide coating on γ-TiAl alloys / H.R. Jafarian, S. Mirzamohammdi, A. Sabour Rouhaghdam, M. Aliofkhazraei // Фізико-хімічна механіка матеріалів. — 2011. — Т. 47, № 4. — С. 47-51. — Бібліогр.:18 назв. — англ. |
Репозиторії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| Резюме: | Microstructure and oxidation behavior of aluminide coating has been investigated. The layers were examined by optical microscopy, scanning electron microscopy (SEM) equipped with EDS and X-ray diffraction method. The isothermal oxidation behaviors of samples were investigated at 950°C for 200 h. The results indicated that TiAl₃ were formed on substrate. In addition, aluminide coating improved the oxidation resistance of γ-TiAl alloys by forming a protective alumina scale. Moreover, during oxidation treatment the interdiffusion of TiAl₃ layer with γ-TiAl substrate results in depletion of aluminum in the TiAl₃ layer and growth of TiAl₂ layer. After oxidation treatment the coating layer maintained a microstructure with phases including TiAl₃, TiAl₂ and Al₂O₃. |
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