Role of Re additions on hot corrosion behaviors of a Co–Al–W superalloys
The hot corrosion behaviors of Co–Al–W superalloys with Re additions were investigated at 900 °C. The results showed that the addition of Re improved the hot corrosion resistance significantly. The alloys developed multi-layer oxidation and corrosion products, which located from surface to substrate...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2024-01-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785423032738 |
| _version_ | 1797338317822361600 |
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| author | Yingjie Wang Pengjie Zhou Qilong Liu Enze Liu Shujin Chen Katsunari Oikawa |
| author_facet | Yingjie Wang Pengjie Zhou Qilong Liu Enze Liu Shujin Chen Katsunari Oikawa |
| author_sort | Yingjie Wang |
| collection | DOAJ |
| description | The hot corrosion behaviors of Co–Al–W superalloys with Re additions were investigated at 900 °C. The results showed that the addition of Re improved the hot corrosion resistance significantly. The alloys developed multi-layer oxidation and corrosion products, which located from surface to substrate were: the CoO and Co3O4 layer, the CoWO4 and CoAl2O4 layer, the Al2O3 layer, and the Co3W layer. The addition of Re promotes the formation of the α-Al2O3 scale, which is stable and dense. The thickness the α-Al2O3 scale in 1Re alloy is 1.9 μm, which is much thicker than that of the base alloy. The well-developed α-Al2O3 scale leads to the improvements in hot corrosion resistance. |
| first_indexed | 2024-03-08T09:29:17Z |
| format | Article |
| id | doaj.art-d864650592c4426a83267b94c41690c8 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-03-08T09:29:17Z |
| publishDate | 2024-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-d864650592c4426a83267b94c41690c82024-01-31T05:44:07ZengElsevierJournal of Materials Research and Technology2238-78542024-01-012832323239Role of Re additions on hot corrosion behaviors of a Co–Al–W superalloysYingjie Wang0Pengjie Zhou1Qilong Liu2Enze Liu3Shujin Chen4Katsunari Oikawa5School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212003, ChinaSchool of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212003, China; Corresponding author.School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212003, ChinaInstitute Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang, 110016, ChinaSchool of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212003, ChinaDepartment of Metallurgy, Graduate School of Engineering, Tohoku University, Aoba 6-6-02, Aramaki, Aoba-ku, Sendai, 980-8579, JapanThe hot corrosion behaviors of Co–Al–W superalloys with Re additions were investigated at 900 °C. The results showed that the addition of Re improved the hot corrosion resistance significantly. The alloys developed multi-layer oxidation and corrosion products, which located from surface to substrate were: the CoO and Co3O4 layer, the CoWO4 and CoAl2O4 layer, the Al2O3 layer, and the Co3W layer. The addition of Re promotes the formation of the α-Al2O3 scale, which is stable and dense. The thickness the α-Al2O3 scale in 1Re alloy is 1.9 μm, which is much thicker than that of the base alloy. The well-developed α-Al2O3 scale leads to the improvements in hot corrosion resistance.http://www.sciencedirect.com/science/article/pii/S2238785423032738Co-base superalloyHot corrosionRheniumCo–Al–W alloy |
| spellingShingle | Yingjie Wang Pengjie Zhou Qilong Liu Enze Liu Shujin Chen Katsunari Oikawa Role of Re additions on hot corrosion behaviors of a Co–Al–W superalloys Journal of Materials Research and Technology Co-base superalloy Hot corrosion Rhenium Co–Al–W alloy |
| title | Role of Re additions on hot corrosion behaviors of a Co–Al–W superalloys |
| title_full | Role of Re additions on hot corrosion behaviors of a Co–Al–W superalloys |
| title_fullStr | Role of Re additions on hot corrosion behaviors of a Co–Al–W superalloys |
| title_full_unstemmed | Role of Re additions on hot corrosion behaviors of a Co–Al–W superalloys |
| title_short | Role of Re additions on hot corrosion behaviors of a Co–Al–W superalloys |
| title_sort | role of re additions on hot corrosion behaviors of a co al w superalloys |
| topic | Co-base superalloy Hot corrosion Rhenium Co–Al–W alloy |
| url | http://www.sciencedirect.com/science/article/pii/S2238785423032738 |
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