溶融Fe-Co合金のアルミニウム脱酸平衡
Aluminum deoxidation equilibrium of molten Fe-Co alloy was experimentally measured using a chemical equilibrium method and numerically assessed using a sub-regular solution model based on Darken’s quadratic formalism and a Redlich-Kister type polynomial at 1873 K. It was found that the degree of oxy...
| Main Authors: | , , , |
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| Format: | Journal Article |
| Language: | Japanese |
| Published: |
Nippon Tekko Kyokai
2023
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| Online Access: | http://hdl.handle.net/20.500.11937/90279 |
| _version_ | 1848765364026998784 |
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| author | Gamutan, Jonah Akaishi, Kosei Sato, Takahiro Miki, Takahiro |
| author_facet | Gamutan, Jonah Akaishi, Kosei Sato, Takahiro Miki, Takahiro |
| author_sort | Gamutan, Jonah |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Aluminum deoxidation equilibrium of molten Fe-Co alloy was experimentally measured using a chemical equilibrium method and numerically assessed using a sub-regular solution model based on Darken’s quadratic formalism and a Redlich-Kister type polynomial at 1873 K. It was found that the degree of oxygen content reduction by Al-deoxidation decreased with increasing cobalt concentration in the alloy, peaking at around 40 to 60 mass% Co, and then improved with further increase in cobalt concentration. The following binary interaction parameters between cobalt and aluminum were derived in this study:
0ΩCo-Al = −387360 [J⁄mol], 1ΩCo-Al = 309420 [J⁄mol]
It was also found that the above binary interaction parameters can accurately determine Al-deoxidation equilibrium of pure liquid cobalt. Finally, the critical point at which Al2O3 and CoO∙Al2O3 coexist throughout the whole composition range of the alloy was also estimated from the experimental results in this study. |
| first_indexed | 2025-11-14T11:34:04Z |
| format | Journal Article |
| id | curtin-20.500.11937-90279 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | Japanese |
| last_indexed | 2025-11-14T11:34:04Z |
| publishDate | 2023 |
| publisher | Nippon Tekko Kyokai |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-902792023-02-27T06:13:53Z 溶融Fe-Co合金のアルミニウム脱酸平衡 Gamutan, Jonah Akaishi, Kosei Sato, Takahiro Miki, Takahiro Aluminum deoxidation equilibrium of molten Fe-Co alloy was experimentally measured using a chemical equilibrium method and numerically assessed using a sub-regular solution model based on Darken’s quadratic formalism and a Redlich-Kister type polynomial at 1873 K. It was found that the degree of oxygen content reduction by Al-deoxidation decreased with increasing cobalt concentration in the alloy, peaking at around 40 to 60 mass% Co, and then improved with further increase in cobalt concentration. The following binary interaction parameters between cobalt and aluminum were derived in this study: 0ΩCo-Al = −387360 [J⁄mol], 1ΩCo-Al = 309420 [J⁄mol] It was also found that the above binary interaction parameters can accurately determine Al-deoxidation equilibrium of pure liquid cobalt. Finally, the critical point at which Al2O3 and CoO∙Al2O3 coexist throughout the whole composition range of the alloy was also estimated from the experimental results in this study. 2023 Journal Article http://hdl.handle.net/20.500.11937/90279 10.2355/tetsutohagane.TETSU-2022-075 Japanese http://creativecommons.org/licenses/by-nc-nd/4.0/ Nippon Tekko Kyokai fulltext |
| spellingShingle | Gamutan, Jonah Akaishi, Kosei Sato, Takahiro Miki, Takahiro 溶融Fe-Co合金のアルミニウム脱酸平衡 |
| title | 溶融Fe-Co合金のアルミニウム脱酸平衡 |
| title_full | 溶融Fe-Co合金のアルミニウム脱酸平衡 |
| title_fullStr | 溶融Fe-Co合金のアルミニウム脱酸平衡 |
| title_full_unstemmed | 溶融Fe-Co合金のアルミニウム脱酸平衡 |
| title_short | 溶融Fe-Co合金のアルミニウム脱酸平衡 |
| title_sort | 溶融fe-co合金のアルミニウム脱酸平衡 |
| url | http://hdl.handle.net/20.500.11937/90279 |