High-temperature oxidation behavior of laser-cladded refractory NiSi0.5CrCoMoNb0.75 high-entropy coating
This study investigated the high-temperature oxidation behavior of a refractory NiSi0.5CrCoMoNb0.75 high-entropy alloy coating prepared via laser cladding technology. X-ray diffraction, scanning electron microscopy, and electron probe microanalysis were used to characterize the microstructure, eleme...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2022-03-01
|
| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785422001156 |
| _version_ | 1818772858890878976 |
|---|---|
| author | Shen Li Tomiko Yamaguchi |
| author_facet | Shen Li Tomiko Yamaguchi |
| author_sort | Shen Li |
| collection | DOAJ |
| description | This study investigated the high-temperature oxidation behavior of a refractory NiSi0.5CrCoMoNb0.75 high-entropy alloy coating prepared via laser cladding technology. X-ray diffraction, scanning electron microscopy, and electron probe microanalysis were used to characterize the microstructure, elemental distribution, and high-temperature oxidation properties of the coating. The results show that the coating was composed of a matrix having the HCP structure, a lumpy σ phase with a rhombohedral structure, and a minor netlike μ phase having the FCC structure. After the coating was oxidized in air at high temperatures, the surface and cross-section of the oxide layer were analyzed. The results show that the oxide scale had a unique layered distribution. The oxide scale was subdivided into six banded layers according to the different alloying elements contained in each layer. The elements in the oxidation reaction were mainly Ni, Co, and Cr. Furthermore, the oxide scale was composed of Ni3(VO4)2, Ni3TiO5, NiCrO3, CoCr2O4, and Nb0.6Cr0.4O2. |
| first_indexed | 2024-12-18T10:16:02Z |
| format | Article |
| id | doaj.art-77b5532d5b8c43149f725c8e286b8c67 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-12-18T10:16:02Z |
| publishDate | 2022-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-77b5532d5b8c43149f725c8e286b8c672022-12-21T21:11:18ZengElsevierJournal of Materials Research and Technology2238-78542022-03-011716161627High-temperature oxidation behavior of laser-cladded refractory NiSi0.5CrCoMoNb0.75 high-entropy coatingShen Li0Tomiko Yamaguchi1Department of Materials Science, Graduate School of Engineering, Kyushu Institute of Technology, Kitakyushu 804–8550, JapanCorresponding author.; Department of Materials Science, Graduate School of Engineering, Kyushu Institute of Technology, Kitakyushu 804–8550, JapanThis study investigated the high-temperature oxidation behavior of a refractory NiSi0.5CrCoMoNb0.75 high-entropy alloy coating prepared via laser cladding technology. X-ray diffraction, scanning electron microscopy, and electron probe microanalysis were used to characterize the microstructure, elemental distribution, and high-temperature oxidation properties of the coating. The results show that the coating was composed of a matrix having the HCP structure, a lumpy σ phase with a rhombohedral structure, and a minor netlike μ phase having the FCC structure. After the coating was oxidized in air at high temperatures, the surface and cross-section of the oxide layer were analyzed. The results show that the oxide scale had a unique layered distribution. The oxide scale was subdivided into six banded layers according to the different alloying elements contained in each layer. The elements in the oxidation reaction were mainly Ni, Co, and Cr. Furthermore, the oxide scale was composed of Ni3(VO4)2, Ni3TiO5, NiCrO3, CoCr2O4, and Nb0.6Cr0.4O2.http://www.sciencedirect.com/science/article/pii/S2238785422001156Laser claddingHigh-entropy coatingsMicrostructureHigh-temperature oxidation |
| spellingShingle | Shen Li Tomiko Yamaguchi High-temperature oxidation behavior of laser-cladded refractory NiSi0.5CrCoMoNb0.75 high-entropy coating Journal of Materials Research and Technology Laser cladding High-entropy coatings Microstructure High-temperature oxidation |
| title | High-temperature oxidation behavior of laser-cladded refractory NiSi0.5CrCoMoNb0.75 high-entropy coating |
| title_full | High-temperature oxidation behavior of laser-cladded refractory NiSi0.5CrCoMoNb0.75 high-entropy coating |
| title_fullStr | High-temperature oxidation behavior of laser-cladded refractory NiSi0.5CrCoMoNb0.75 high-entropy coating |
| title_full_unstemmed | High-temperature oxidation behavior of laser-cladded refractory NiSi0.5CrCoMoNb0.75 high-entropy coating |
| title_short | High-temperature oxidation behavior of laser-cladded refractory NiSi0.5CrCoMoNb0.75 high-entropy coating |
| title_sort | high temperature oxidation behavior of laser cladded refractory nisi0 5crcomonb0 75 high entropy coating |
| topic | Laser cladding High-entropy coatings Microstructure High-temperature oxidation |
| url | http://www.sciencedirect.com/science/article/pii/S2238785422001156 |
| work_keys_str_mv | AT shenli hightemperatureoxidationbehavioroflasercladdedrefractorynisi05crcomonb075highentropycoating AT tomikoyamaguchi hightemperatureoxidationbehavioroflasercladdedrefractorynisi05crcomonb075highentropycoating |