High Temperature Chloride Corrosion Behavior of 904L:AlFeNiMoNb High-Entropy Alloy
In order to obtain high cost-effective coating materials working in chlorine-containing environment at high temperature, a 904L super austenitic alloy modified by an AlFeNiMoNb alloy (904L:AlFeNiMoNb) was obtained by vacuum arc melting process. The 904L:AlFeNiMoNb high-entropy alloy has a similar ph...
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| Format: | Article |
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Frontiers Media S.A.
2021-11-01
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| Series: | Frontiers in Materials |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fmats.2021.764928/full |
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| author | Lingyun Bai Lingyun Bai Wenyi Peng Dandan Men Jun Zhu Xuecheng Wu Xiongtao Shi Junhuan Xiang Xiaohua Deng Yuqing Wang Zuxiang Sun Siqi Yu Xiang Wei |
| author_facet | Lingyun Bai Lingyun Bai Wenyi Peng Dandan Men Jun Zhu Xuecheng Wu Xiongtao Shi Junhuan Xiang Xiaohua Deng Yuqing Wang Zuxiang Sun Siqi Yu Xiang Wei |
| author_sort | Lingyun Bai |
| collection | DOAJ |
| description | In order to obtain high cost-effective coating materials working in chlorine-containing environment at high temperature, a 904L super austenitic alloy modified by an AlFeNiMoNb alloy (904L:AlFeNiMoNb) was obtained by vacuum arc melting process. The 904L:AlFeNiMoNb high-entropy alloy has a similar phase component with the AlFeNiMoNb alloy, but a more homogenous microstructure than that of the AlFeNiMoNb alloy. High-temperature chloride corrosion tests for 904L, AlFeNiMoNb, and 904L:AlFeNiMoNb high-entropy alloy were carried out under N2–2.6 vol.% CO2–1.3 vol.% O2–2,700 vppm HCl gaseous environment at 700°C and 800°C for 55 h, respectively. Due to the volatilization of FeCl2, weight change curves of the 904L alloy at 700°C and 800°C showed obvious weight loss. Especially at 800°C, the weight loss of the corroded 904L sample was 10 times that of the corroded sample at 700°C. Different from the weight loss situation of the 904L sample, both AlFeNiMoNb and 904L:AlFeNiMoNb high-entropy alloy showed small weight gains under the corrosion temperature of 700°C, while the latter gained half as much weight as the former. When the corrosion temperature was raised to 800°C, the AlFeNiMoNb and 904L:AlFeNiMoNb high-entropy alloy showed flat weight change curves with little weight loss. Weight loss for the AlFeNiMoNb and 904L:AlFeNiMoNb high-entropy alloy were 1.35138 and 0.0118 mg/cm2, respectively. The high temperature chloride corrosion resistance of 904L:AlFeNiMoNb high-entropy alloy is higher than that of 904L and AlFeNiMoNb at both 700°C and 800°C. Meanwhile, on the basis of the morphology and composition results of the corroded samples, combined with thermodynamic calculation, the high-temperature chloride corrosion mechanics of the tested alloys were discussed. |
| first_indexed | 2024-12-19T00:36:48Z |
| format | Article |
| id | doaj.art-b8556780c9b840d78e22d763ad5abc3c |
| institution | Directory Open Access Journal |
| issn | 2296-8016 |
| language | English |
| last_indexed | 2024-12-19T00:36:48Z |
| publishDate | 2021-11-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Materials |
| spelling | doaj.art-b8556780c9b840d78e22d763ad5abc3c2022-12-21T20:44:45ZengFrontiers Media S.A.Frontiers in Materials2296-80162021-11-01810.3389/fmats.2021.764928764928High Temperature Chloride Corrosion Behavior of 904L:AlFeNiMoNb High-Entropy AlloyLingyun Bai0Lingyun Bai1Wenyi Peng2Dandan Men3Jun Zhu4Xuecheng Wu5Xiongtao Shi6Junhuan Xiang7Xiaohua Deng8Yuqing Wang9Zuxiang Sun10Siqi Yu11Xiang Wei12School of materials science and Engineering, Nanchang University, Nanchang, ChinaJiangxi Key Laboratory of Surface Engineering, Jiangxi Science and Technology Normal University, Nanchang, ChinaSchool of materials science and Engineering, Nanchang University, Nanchang, ChinaJiangxi Key Laboratory of Surface Engineering, Jiangxi Science and Technology Normal University, Nanchang, ChinaSchool of materials science and Engineering, Nanchang University, Nanchang, ChinaSchool of materials science and Engineering, Nanchang University, Nanchang, ChinaSchool of materials science and Engineering, Nanchang University, Nanchang, ChinaJiangxi Key Laboratory of Surface Engineering, Jiangxi Science and Technology Normal University, Nanchang, ChinaSchool of materials science and Engineering, Nanchang University, Nanchang, ChinaSchool of materials science and Engineering, Nanchang University, Nanchang, ChinaSchool of materials science and Engineering, Nanchang University, Nanchang, ChinaSchool of materials science and Engineering, Nanchang University, Nanchang, ChinaSchool of materials science and Engineering, Nanchang University, Nanchang, ChinaIn order to obtain high cost-effective coating materials working in chlorine-containing environment at high temperature, a 904L super austenitic alloy modified by an AlFeNiMoNb alloy (904L:AlFeNiMoNb) was obtained by vacuum arc melting process. The 904L:AlFeNiMoNb high-entropy alloy has a similar phase component with the AlFeNiMoNb alloy, but a more homogenous microstructure than that of the AlFeNiMoNb alloy. High-temperature chloride corrosion tests for 904L, AlFeNiMoNb, and 904L:AlFeNiMoNb high-entropy alloy were carried out under N2–2.6 vol.% CO2–1.3 vol.% O2–2,700 vppm HCl gaseous environment at 700°C and 800°C for 55 h, respectively. Due to the volatilization of FeCl2, weight change curves of the 904L alloy at 700°C and 800°C showed obvious weight loss. Especially at 800°C, the weight loss of the corroded 904L sample was 10 times that of the corroded sample at 700°C. Different from the weight loss situation of the 904L sample, both AlFeNiMoNb and 904L:AlFeNiMoNb high-entropy alloy showed small weight gains under the corrosion temperature of 700°C, while the latter gained half as much weight as the former. When the corrosion temperature was raised to 800°C, the AlFeNiMoNb and 904L:AlFeNiMoNb high-entropy alloy showed flat weight change curves with little weight loss. Weight loss for the AlFeNiMoNb and 904L:AlFeNiMoNb high-entropy alloy were 1.35138 and 0.0118 mg/cm2, respectively. The high temperature chloride corrosion resistance of 904L:AlFeNiMoNb high-entropy alloy is higher than that of 904L and AlFeNiMoNb at both 700°C and 800°C. Meanwhile, on the basis of the morphology and composition results of the corroded samples, combined with thermodynamic calculation, the high-temperature chloride corrosion mechanics of the tested alloys were discussed.https://www.frontiersin.org/articles/10.3389/fmats.2021.764928/fullhigh temperature chloride corrosion904L:AlFeNiMoNb highentropy alloycorrosion kineticsactive oxidationcorrosion mechanics |
| spellingShingle | Lingyun Bai Lingyun Bai Wenyi Peng Dandan Men Jun Zhu Xuecheng Wu Xiongtao Shi Junhuan Xiang Xiaohua Deng Yuqing Wang Zuxiang Sun Siqi Yu Xiang Wei High Temperature Chloride Corrosion Behavior of 904L:AlFeNiMoNb High-Entropy Alloy Frontiers in Materials high temperature chloride corrosion 904L:AlFeNiMoNb highentropy alloy corrosion kinetics active oxidation corrosion mechanics |
| title | High Temperature Chloride Corrosion Behavior of 904L:AlFeNiMoNb High-Entropy Alloy |
| title_full | High Temperature Chloride Corrosion Behavior of 904L:AlFeNiMoNb High-Entropy Alloy |
| title_fullStr | High Temperature Chloride Corrosion Behavior of 904L:AlFeNiMoNb High-Entropy Alloy |
| title_full_unstemmed | High Temperature Chloride Corrosion Behavior of 904L:AlFeNiMoNb High-Entropy Alloy |
| title_short | High Temperature Chloride Corrosion Behavior of 904L:AlFeNiMoNb High-Entropy Alloy |
| title_sort | high temperature chloride corrosion behavior of 904l alfenimonb high entropy alloy |
| topic | high temperature chloride corrosion 904L:AlFeNiMoNb highentropy alloy corrosion kinetics active oxidation corrosion mechanics |
| url | https://www.frontiersin.org/articles/10.3389/fmats.2021.764928/full |
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