Corrosion resistance of FeCrAl coatings on Mo–La alloys
FeCrAl coatings were deposited on the surface of Mo–La alloys by the non-equilibrium magnetron sputtering process. The corrosion resistance and corrosion mechanism of the FeCrAl coatings were investigated. The results show that, the average corrosion rate of FeCrAl coatings is 3.8 mg·dm‒2 in the aut...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | zho |
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Editorial Office of Powder Metallurgy Technology
2023-02-01
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| Series: | Fenmo yejin jishu |
| Subjects: | |
| Online Access: | https://pmt.ustb.edu.cn/article/doi/10.19591/j.cnki.cn11-1974/tf.2021010015 |
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| _version_ | 1846169187349692416 |
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| author | XI Sha AN Geng ZHANG Xiao ZHOU Sha LIU Renzhi WU Jina |
| author_facet | XI Sha AN Geng ZHANG Xiao ZHOU Sha LIU Renzhi WU Jina |
| author_sort | XI Sha |
| collection | DOAJ |
| description | FeCrAl coatings were deposited on the surface of Mo–La alloys by the non-equilibrium magnetron sputtering process. The corrosion resistance and corrosion mechanism of the FeCrAl coatings were investigated. The results show that, the average corrosion rate of FeCrAl coatings is 3.8 mg·dm‒2 in the autoclave under 360 ℃, 18.6 MPa, and pure water corrosion condition for 72 h, which is lower than that of zirconium alloys and Mo–La alloys without coating. Al in the coating reacts with the oxygen in the environment medium, forming a dense Al2O3 film on the surface of the coatings, which slows down the corrosion rate of the coatings and effectively protects the substrate materials. The thickness of Al2O3 film is about 4 μm after the FeCrAl coatings are corroded for 8 h at 1200 ℃ and 0.1 MPa, the coatings maintain the protective effect, and the Mo–La alloy substrate is not exposed to the corrosion environment. After quenching, the thickness of Al2O3 film reduces to about 2.5 μm, the coatings keep the structural integrity, and there is no penetrating shedding in Mo–La alloy surface, which meets the requirement of corrosion resistance. |
| format | Article |
| id | doaj-art-4a07175e8f964c8bb3dd8cea651e6eea |
| institution | Kabale University |
| issn | 1001-3784 |
| language | zho |
| publishDate | 2023-02-01 |
| publisher | Editorial Office of Powder Metallurgy Technology |
| record_format | Article |
| series | Fenmo yejin jishu |
| spelling | doaj-art-4a07175e8f964c8bb3dd8cea651e6eea2024-11-13T05:53:52ZzhoEditorial Office of Powder Metallurgy TechnologyFenmo yejin jishu1001-37842023-02-01411909610.19591/j.cnki.cn11-1974/tf.2021010015Corrosion resistance of FeCrAl coatings on Mo–La alloysXI Sha0AN Geng1ZHANG Xiao2ZHOU Sha3LIU Renzhi4WU Jina5Jinduicheng Molybdenum Co., Ltd., Xi´an 710077, ChinaJinduicheng Molybdenum Co., Ltd., Xi´an 710077, ChinaJinduicheng Molybdenum Co., Ltd., Xi´an 710077, ChinaJinduicheng Molybdenum Co., Ltd., Xi´an 710077, ChinaJinduicheng Molybdenum Co., Ltd., Xi´an 710077, ChinaJinduicheng Molybdenum Co., Ltd., Xi´an 710077, ChinaFeCrAl coatings were deposited on the surface of Mo–La alloys by the non-equilibrium magnetron sputtering process. The corrosion resistance and corrosion mechanism of the FeCrAl coatings were investigated. The results show that, the average corrosion rate of FeCrAl coatings is 3.8 mg·dm‒2 in the autoclave under 360 ℃, 18.6 MPa, and pure water corrosion condition for 72 h, which is lower than that of zirconium alloys and Mo–La alloys without coating. Al in the coating reacts with the oxygen in the environment medium, forming a dense Al2O3 film on the surface of the coatings, which slows down the corrosion rate of the coatings and effectively protects the substrate materials. The thickness of Al2O3 film is about 4 μm after the FeCrAl coatings are corroded for 8 h at 1200 ℃ and 0.1 MPa, the coatings maintain the protective effect, and the Mo–La alloy substrate is not exposed to the corrosion environment. After quenching, the thickness of Al2O3 film reduces to about 2.5 μm, the coatings keep the structural integrity, and there is no penetrating shedding in Mo–La alloy surface, which meets the requirement of corrosion resistance.https://pmt.ustb.edu.cn/article/doi/10.19591/j.cnki.cn11-1974/tf.2021010015fecral coatingsmo–la alloysnuclear reactormagnetron sputteringcorrosion resistance |
| spellingShingle | XI Sha AN Geng ZHANG Xiao ZHOU Sha LIU Renzhi WU Jina Corrosion resistance of FeCrAl coatings on Mo–La alloys Fenmo yejin jishu fecral coatings mo–la alloys nuclear reactor magnetron sputtering corrosion resistance |
| title | Corrosion resistance of FeCrAl coatings on Mo–La alloys |
| title_full | Corrosion resistance of FeCrAl coatings on Mo–La alloys |
| title_fullStr | Corrosion resistance of FeCrAl coatings on Mo–La alloys |
| title_full_unstemmed | Corrosion resistance of FeCrAl coatings on Mo–La alloys |
| title_short | Corrosion resistance of FeCrAl coatings on Mo–La alloys |
| title_sort | corrosion resistance of fecral coatings on mo la alloys |
| topic | fecral coatings mo–la alloys nuclear reactor magnetron sputtering corrosion resistance |
| url | https://pmt.ustb.edu.cn/article/doi/10.19591/j.cnki.cn11-1974/tf.2021010015 |
| work_keys_str_mv | AT xisha corrosionresistanceoffecralcoatingsonmolaalloys AT angeng corrosionresistanceoffecralcoatingsonmolaalloys AT zhangxiao corrosionresistanceoffecralcoatingsonmolaalloys AT zhousha corrosionresistanceoffecralcoatingsonmolaalloys AT liurenzhi corrosionresistanceoffecralcoatingsonmolaalloys AT wujina corrosionresistanceoffecralcoatingsonmolaalloys |