High-temperature corrosion of pure Ni3Al and its alloyed (2.99 wt.%Ti) in Ar-0.2%SO2 gas environment
In this work, the high-temperature corrosion behaviour of pure Ni3Al (P–Ni3Al) and alloyed (2.99 wt.%Ti) Ni3Al (Ti–Ni3Al) was investigated in Ar-0.2%SO2 gas at 900–1100 °C for up to 100 h. The corrosion kinetics of P–Ni3Al and Ti–Ni3Al reveal that Ti addition increased the total weight gain at all t...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-03-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785422002277 |
| _version_ | 1818312558343356416 |
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| author | Poonam Yadav Muhammad Ali Abro Dong Bok Lee Jonghun Yoon |
| author_facet | Poonam Yadav Muhammad Ali Abro Dong Bok Lee Jonghun Yoon |
| author_sort | Poonam Yadav |
| collection | DOAJ |
| description | In this work, the high-temperature corrosion behaviour of pure Ni3Al (P–Ni3Al) and alloyed (2.99 wt.%Ti) Ni3Al (Ti–Ni3Al) was investigated in Ar-0.2%SO2 gas at 900–1100 °C for up to 100 h. The corrosion kinetics of P–Ni3Al and Ti–Ni3Al reveal that Ti addition increased the total weight gain at all temperatures by approximately 10 times than without Ti (P–Ni3Al). The alloy initially gained more weight with the increase in temperature; but later on, the corrosion kinetics changed. Because of the extensive scale spallation during cooling, which causes the creation of large and deep geometric voids, the corrosion kinetics of P–Ni3Al deviated from the parabolic rate law. At all temperatures, Ti strengthened the scale adherence as it occupied the Al substitutional sites with a broad atomic radius, and facilitated the creation of ordered phases known as the gamma prime phase (γ′). Owing to the ordered structure, it was assumed that the diffusion of occupying atoms would be slower, thereby increasing the scale adherence. Darker inclusions were found in Ti–Ni3Al at the scale–matrix interface, which were rich in TiS owing to inward sulphur diffusion. |
| first_indexed | 2024-12-13T08:19:46Z |
| format | Article |
| id | doaj.art-167e5b1186b7495293f165d9a5569bae |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-12-13T08:19:46Z |
| publishDate | 2022-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-167e5b1186b7495293f165d9a5569bae2022-12-21T23:54:02ZengElsevierJournal of Materials Research and Technology2238-78542022-03-011730553065High-temperature corrosion of pure Ni3Al and its alloyed (2.99 wt.%Ti) in Ar-0.2%SO2 gas environmentPoonam Yadav0Muhammad Ali Abro1Dong Bok Lee2Jonghun Yoon3Department of Mechanical Engineering, BK21FOUR ERICA-ACE Center, Hanyang University, Ansan-si, Gyeonggi-do, 15588, Republic of KoreaDepartment of Mechanical Engineering, MUET, SZAB Campus, Khairpur Mir's, 66020, PakistanSchool of Advanced Materials Science & Engineering, Sungkyunkwan University, Suwon, 16419, Republic of KoreaDepartment of Mechanical Engineering, BK21FOUR ERICA-ACE Center, Hanyang University, Ansan-si, Gyeonggi-do, 15588, Republic of Korea; AIDICOME Inc., 55, Hanyangdaehak-ro, Sangnok-gu, Ansan, Gyeonggi 15588, Korea; Corresponding author.In this work, the high-temperature corrosion behaviour of pure Ni3Al (P–Ni3Al) and alloyed (2.99 wt.%Ti) Ni3Al (Ti–Ni3Al) was investigated in Ar-0.2%SO2 gas at 900–1100 °C for up to 100 h. The corrosion kinetics of P–Ni3Al and Ti–Ni3Al reveal that Ti addition increased the total weight gain at all temperatures by approximately 10 times than without Ti (P–Ni3Al). The alloy initially gained more weight with the increase in temperature; but later on, the corrosion kinetics changed. Because of the extensive scale spallation during cooling, which causes the creation of large and deep geometric voids, the corrosion kinetics of P–Ni3Al deviated from the parabolic rate law. At all temperatures, Ti strengthened the scale adherence as it occupied the Al substitutional sites with a broad atomic radius, and facilitated the creation of ordered phases known as the gamma prime phase (γ′). Owing to the ordered structure, it was assumed that the diffusion of occupying atoms would be slower, thereby increasing the scale adherence. Darker inclusions were found in Ti–Ni3Al at the scale–matrix interface, which were rich in TiS owing to inward sulphur diffusion.http://www.sciencedirect.com/science/article/pii/S2238785422002277CorrosionDiffusionHigh-temperatureKineticsSpallationOxide scale |
| spellingShingle | Poonam Yadav Muhammad Ali Abro Dong Bok Lee Jonghun Yoon High-temperature corrosion of pure Ni3Al and its alloyed (2.99 wt.%Ti) in Ar-0.2%SO2 gas environment Journal of Materials Research and Technology Corrosion Diffusion High-temperature Kinetics Spallation Oxide scale |
| title | High-temperature corrosion of pure Ni3Al and its alloyed (2.99 wt.%Ti) in Ar-0.2%SO2 gas environment |
| title_full | High-temperature corrosion of pure Ni3Al and its alloyed (2.99 wt.%Ti) in Ar-0.2%SO2 gas environment |
| title_fullStr | High-temperature corrosion of pure Ni3Al and its alloyed (2.99 wt.%Ti) in Ar-0.2%SO2 gas environment |
| title_full_unstemmed | High-temperature corrosion of pure Ni3Al and its alloyed (2.99 wt.%Ti) in Ar-0.2%SO2 gas environment |
| title_short | High-temperature corrosion of pure Ni3Al and its alloyed (2.99 wt.%Ti) in Ar-0.2%SO2 gas environment |
| title_sort | high temperature corrosion of pure ni3al and its alloyed 2 99 wt ti in ar 0 2 so2 gas environment |
| topic | Corrosion Diffusion High-temperature Kinetics Spallation Oxide scale |
| url | http://www.sciencedirect.com/science/article/pii/S2238785422002277 |
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