Synergistic effect of Pd+Rh on the microstructure and oxidation resistance of aluminide coatings
The Pd+Rh modified aluminide coatings were deposited on nickel and CMSX-4 nickel superalloy. The Pd layer (2.5 μm thick) and the subsequent Rh layer (0.5 μm thick) were electroplated on both nickel and CMSX-4. The aluminization of the substrates with Pd+Rh layers was carried out using the CVD method...
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University of Belgrade, Technical Faculty, Bor
2023-01-01
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| Series: | Journal of Mining and Metallurgy. Section B: Metallurgy |
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| Online Access: | https://doiserbia.nb.rs/img/doi/1450-5339/2023/1450-53392300040Z.pdf |
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| author | Zagula-Yavorska M. |
| author_facet | Zagula-Yavorska M. |
| author_sort | Zagula-Yavorska M. |
| collection | DOAJ |
| description | The Pd+Rh modified aluminide coatings were deposited on nickel and CMSX-4 nickel superalloy. The Pd layer (2.5 μm thick) and the subsequent Rh layer (0.5 μm thick) were electroplated on both nickel and CMSX-4. The aluminization of the substrates with Pd+Rh layers was carried out using the CVD method. Two zones (outer and interdiffusing) were observed on both coatings. The β-NiAl phase doped in palladium was formed in the outer zones and β-NiAl phase doped with palladium and rhodium was formed at the boundary between the outer and interdiffusion zones of both coatings. The γ’- Ni3Al phase and μ-Co7Mo6 precipitates in the β-NiAl matrix were found in the interdiffusion zone on nickel and CMSX-4 superalloy respectively. The simultaneous use of Pd and Rh in the aluminide coating slowed down their oxidation rate. Moreover, Pd+Rh co-doping is more efficient than Pd+Hf in reducing the oxidation rate of aluminide coating on CMSX-4 superalloy. |
| format | Article |
| id | doaj-art-a7611621298d4843802324c879068230 |
| institution | Kabale University |
| issn | 1450-5339 2217-7175 |
| language | English |
| publishDate | 2023-01-01 |
| publisher | University of Belgrade, Technical Faculty, Bor |
| record_format | Article |
| series | Journal of Mining and Metallurgy. Section B: Metallurgy |
| spelling | doaj-art-a7611621298d4843802324c8790682302025-02-02T23:44:10ZengUniversity of Belgrade, Technical Faculty, BorJournal of Mining and Metallurgy. Section B: Metallurgy1450-53392217-71752023-01-0159346547610.2298/JMMB231017040Z1450-53392300040ZSynergistic effect of Pd+Rh on the microstructure and oxidation resistance of aluminide coatingsZagula-Yavorska M.0Rzeszow University of Technology, Faculty of Mechanical Engineering and Aeronautics, Rzeszów, PolandThe Pd+Rh modified aluminide coatings were deposited on nickel and CMSX-4 nickel superalloy. The Pd layer (2.5 μm thick) and the subsequent Rh layer (0.5 μm thick) were electroplated on both nickel and CMSX-4. The aluminization of the substrates with Pd+Rh layers was carried out using the CVD method. Two zones (outer and interdiffusing) were observed on both coatings. The β-NiAl phase doped in palladium was formed in the outer zones and β-NiAl phase doped with palladium and rhodium was formed at the boundary between the outer and interdiffusion zones of both coatings. The γ’- Ni3Al phase and μ-Co7Mo6 precipitates in the β-NiAl matrix were found in the interdiffusion zone on nickel and CMSX-4 superalloy respectively. The simultaneous use of Pd and Rh in the aluminide coating slowed down their oxidation rate. Moreover, Pd+Rh co-doping is more efficient than Pd+Hf in reducing the oxidation rate of aluminide coating on CMSX-4 superalloy.https://doiserbia.nb.rs/img/doi/1450-5339/2023/1450-53392300040Z.pdfpd+rhaluminide coatingoxidationkp value |
| spellingShingle | Zagula-Yavorska M. Synergistic effect of Pd+Rh on the microstructure and oxidation resistance of aluminide coatings Journal of Mining and Metallurgy. Section B: Metallurgy pd+rh aluminide coating oxidation kp value |
| title | Synergistic effect of Pd+Rh on the microstructure and oxidation resistance of aluminide coatings |
| title_full | Synergistic effect of Pd+Rh on the microstructure and oxidation resistance of aluminide coatings |
| title_fullStr | Synergistic effect of Pd+Rh on the microstructure and oxidation resistance of aluminide coatings |
| title_full_unstemmed | Synergistic effect of Pd+Rh on the microstructure and oxidation resistance of aluminide coatings |
| title_short | Synergistic effect of Pd+Rh on the microstructure and oxidation resistance of aluminide coatings |
| title_sort | synergistic effect of pd rh on the microstructure and oxidation resistance of aluminide coatings |
| topic | pd+rh aluminide coating oxidation kp value |
| url | https://doiserbia.nb.rs/img/doi/1450-5339/2023/1450-53392300040Z.pdf |
| work_keys_str_mv | AT zagulayavorskam synergisticeffectofpdrhonthemicrostructureandoxidationresistanceofaluminidecoatings |