High hydrogen permeation resistance achieved in a novel (AlCrZr)O ternary oxide nanofilm
Ceramic coatings with high hydrogen permeation resistance are highly important for protecting metal components from hydrogen attack. In this work, we fabricated an ultrathin (AlCrZr)O nanofilm with superior hydrogen barrier efficiency via a facile sol‒gel technique. This novel ternary oxide nanofilm...
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| Format: | Article |
| Language: | English |
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Tsinghua University Press
2025-05-01
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| Series: | Journal of Advanced Ceramics |
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| Online Access: | https://www.sciopen.com/article/10.26599/JAC.2025.9221064 |
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| author | Liyu Zheng Zhongyang Zheng Youwei Yan Xinyun Wang Heping Li |
| author_facet | Liyu Zheng Zhongyang Zheng Youwei Yan Xinyun Wang Heping Li |
| author_sort | Liyu Zheng |
| collection | DOAJ |
| description | Ceramic coatings with high hydrogen permeation resistance are highly important for protecting metal components from hydrogen attack. In this work, we fabricated an ultrathin (AlCrZr)O nanofilm with superior hydrogen barrier efficiency via a facile sol‒gel technique. This novel ternary oxide nanofilm with an overall thickness of only 100 nm has a high hydrogen permeation reduction factor (PRF) of up to 2364 at 773 K, decreasing the hydrogen permeability by three orders of magnitude compared to that of the steel substrate. The permeation cycling performance and thermal shock resistance of the nanofilm were further evaluated, which demonstrated good stability, with its PRF consistently remaining at a level of 103. These excellent performances of the (AlCrZr)O nanofilm were attributed to its uniquely layered structure, consisting of an amorphous Al‒Zr‒O layer at the top and a crystalline Cr2O3 layer underneath. The amorphous layer without grain boundaries complicated the hydrogen diffusion pathways and effectively increased the hydrogen resistance. Moreover, the crystalline Cr2O3 layer could help mitigate the thermal expansion mismatch between the nanofilm and the steel substrate, ensuring good stability of the barrier performance under thermal conditions. These findings underscore the significant potential of the (AlCrZr)O nanofilm for hydrogen embrittlement protection and provide a new framework for designing highly efficient hydrogen permeation barriers that combine superior performance with extended lifespans. |
| format | Article |
| id | doaj-art-e8e91759ceef4b2ca5a6485677f3fa08 |
| institution | Kabale University |
| issn | 2226-4108 2227-8508 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Tsinghua University Press |
| record_format | Article |
| series | Journal of Advanced Ceramics |
| spelling | doaj-art-e8e91759ceef4b2ca5a6485677f3fa082025-08-20T03:29:31ZengTsinghua University PressJournal of Advanced Ceramics2226-41082227-85082025-05-01145922106410.26599/JAC.2025.9221064High hydrogen permeation resistance achieved in a novel (AlCrZr)O ternary oxide nanofilmLiyu Zheng0Zhongyang Zheng1Youwei Yan2Xinyun Wang3Heping Li4State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, ChinaState Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, ChinaState Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, ChinaState Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, ChinaState Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, ChinaCeramic coatings with high hydrogen permeation resistance are highly important for protecting metal components from hydrogen attack. In this work, we fabricated an ultrathin (AlCrZr)O nanofilm with superior hydrogen barrier efficiency via a facile sol‒gel technique. This novel ternary oxide nanofilm with an overall thickness of only 100 nm has a high hydrogen permeation reduction factor (PRF) of up to 2364 at 773 K, decreasing the hydrogen permeability by three orders of magnitude compared to that of the steel substrate. The permeation cycling performance and thermal shock resistance of the nanofilm were further evaluated, which demonstrated good stability, with its PRF consistently remaining at a level of 103. These excellent performances of the (AlCrZr)O nanofilm were attributed to its uniquely layered structure, consisting of an amorphous Al‒Zr‒O layer at the top and a crystalline Cr2O3 layer underneath. The amorphous layer without grain boundaries complicated the hydrogen diffusion pathways and effectively increased the hydrogen resistance. Moreover, the crystalline Cr2O3 layer could help mitigate the thermal expansion mismatch between the nanofilm and the steel substrate, ensuring good stability of the barrier performance under thermal conditions. These findings underscore the significant potential of the (AlCrZr)O nanofilm for hydrogen embrittlement protection and provide a new framework for designing highly efficient hydrogen permeation barriers that combine superior performance with extended lifespans.https://www.sciopen.com/article/10.26599/JAC.2025.9221064hydrogen permeation(alcrzr)oamorphous phasenanofilmsol‒gel |
| spellingShingle | Liyu Zheng Zhongyang Zheng Youwei Yan Xinyun Wang Heping Li High hydrogen permeation resistance achieved in a novel (AlCrZr)O ternary oxide nanofilm Journal of Advanced Ceramics hydrogen permeation (alcrzr)o amorphous phase nanofilm sol‒gel |
| title | High hydrogen permeation resistance achieved in a novel (AlCrZr)O ternary oxide nanofilm |
| title_full | High hydrogen permeation resistance achieved in a novel (AlCrZr)O ternary oxide nanofilm |
| title_fullStr | High hydrogen permeation resistance achieved in a novel (AlCrZr)O ternary oxide nanofilm |
| title_full_unstemmed | High hydrogen permeation resistance achieved in a novel (AlCrZr)O ternary oxide nanofilm |
| title_short | High hydrogen permeation resistance achieved in a novel (AlCrZr)O ternary oxide nanofilm |
| title_sort | high hydrogen permeation resistance achieved in a novel alcrzr o ternary oxide nanofilm |
| topic | hydrogen permeation (alcrzr)o amorphous phase nanofilm sol‒gel |
| url | https://www.sciopen.com/article/10.26599/JAC.2025.9221064 |
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