Microstructure and oxidation resistance of Pd+Zr and Pd+Hf co-doped aluminide coatings deposited on Mar-M247 nickel superalloy
| Autor: | Romanowska J., Zagula-Yavorska M. |
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| Jazyk: | angličtina |
| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Journal of Mining and Metallurgy. Section B: Metallurgy, Vol 59, Iss 2, Pp 243-254 (2023) |
| Druh dokumentu: | article |
| ISSN: | 1450-5339 2217-7175 |
| DOI: | 10.2298/JMMB221205021R |
| Popis: | Pd+Zr and Pd+Hf co-doped aluminide coatings were deposited on the nickel superalloy Mar-M247 by palladium electroplating followed by zirconization-aluminization or hafnization-aluminization processes. Both coatings consisted of two zones, the outer and the interdiffusion zone consisting of the β-(Ni,Pd)Al phase. Hafnium and zirconium formed inclusions deposited at the edge of the zones and near the surface (only in the Zr+Pd modified coating). The oxidation resistance of the aluminide coating co-doped with Pd+Zr was significantly better than the one co-doped with Pd+Hf. The hafnium content in the Pd+Hf co-doped coating could exceed the limit. |
| Databáze: | Directory of Open Access Journals |
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