Semi-crystalline design of SiB6-modified enamel coatings: Towards long-term synergistic resistance to hydrothermal corrosion
Defects such as bubble pores and cracks of enamel coating accelerate failure in hydrothermal conditions. Here, a trace amount of SiB6 modified enamel coating prepared at a low sintering temperature showed promising hydrothermal corrosion resistance at 80–600 °C. The semi-crystalline enamel coatings...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-09-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785425019040 |
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| author | Xinchang Feng Fangwei Guo Wenchen Zhang Qingfeng Zeng Junning Li Xiaofeng Zhao |
| author_facet | Xinchang Feng Fangwei Guo Wenchen Zhang Qingfeng Zeng Junning Li Xiaofeng Zhao |
| author_sort | Xinchang Feng |
| collection | DOAJ |
| description | Defects such as bubble pores and cracks of enamel coating accelerate failure in hydrothermal conditions. Here, a trace amount of SiB6 modified enamel coating prepared at a low sintering temperature showed promising hydrothermal corrosion resistance at 80–600 °C. The semi-crystalline enamel coatings modified by 1 wt% SiB6 demonstrated enhanced amorphization degree and exhibited a minimal mass change of ∼0.01 % after 480 h. Compared to the undoped coatings, both the equivalent coating electrochemical resistance and charge transfer resistance at the coating/substrate interface were increased by 2∼3 times. A significant amount of flocculent products sealed in the residual pores of the SiB6 modified enamel coating during hydrothermal reaction process, preventing gaseous H2O to migrate to the interface of the steel substrate. This study highlights the synergistic optimization of the amorphous phase and residual stress to dynamically regulate the coating hydrothermal corrosion resistance through a strategic interplay of composition and microstructure design. |
| format | Article |
| id | doaj-art-1af629140e404ab48dad6d16ea78bb27 |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-1af629140e404ab48dad6d16ea78bb272025-08-20T03:33:31ZengElsevierJournal of Materials Research and Technology2238-78542025-09-013872874310.1016/j.jmrt.2025.07.246Semi-crystalline design of SiB6-modified enamel coatings: Towards long-term synergistic resistance to hydrothermal corrosionXinchang Feng0Fangwei Guo1Wenchen Zhang2Qingfeng Zeng3Junning Li4Xiaofeng Zhao5Shanghai Key Laboratory of Advanced High-temperature Materials and Precision Forming, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China; Tianmushan Laboratory, Yuhang District, Hangzhou, 311115, ChinaShanghai Key Laboratory of Advanced High-temperature Materials and Precision Forming, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China; Tianmushan Laboratory, Yuhang District, Hangzhou, 311115, China; National Engineering Research Center of Special Equipment and Power System for Ship and Marine Engineering, Shanghai, 200030, China; Corresponding author. Shanghai Key Laboratory of Advanced High-temperature Materials and Precision Forming, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China.Shanghai Key Laboratory of Advanced High-temperature Materials and Precision Forming, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, ChinaTianmushan Laboratory, Yuhang District, Hangzhou, 311115, ChinaScience and Technology on Advanced Functional Composite Laboratory, Aerospace Research Institute of Materials & Processing Technology, Beijing, 100076, ChinaShanghai Key Laboratory of Advanced High-temperature Materials and Precision Forming, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, ChinaDefects such as bubble pores and cracks of enamel coating accelerate failure in hydrothermal conditions. Here, a trace amount of SiB6 modified enamel coating prepared at a low sintering temperature showed promising hydrothermal corrosion resistance at 80–600 °C. The semi-crystalline enamel coatings modified by 1 wt% SiB6 demonstrated enhanced amorphization degree and exhibited a minimal mass change of ∼0.01 % after 480 h. Compared to the undoped coatings, both the equivalent coating electrochemical resistance and charge transfer resistance at the coating/substrate interface were increased by 2∼3 times. A significant amount of flocculent products sealed in the residual pores of the SiB6 modified enamel coating during hydrothermal reaction process, preventing gaseous H2O to migrate to the interface of the steel substrate. This study highlights the synergistic optimization of the amorphous phase and residual stress to dynamically regulate the coating hydrothermal corrosion resistance through a strategic interplay of composition and microstructure design.http://www.sciencedirect.com/science/article/pii/S2238785425019040Semi-crystalline enamel coatingSiB6PorosityHydrothermal corrosionElectrochemical impedance spectroscopy (EIS) |
| spellingShingle | Xinchang Feng Fangwei Guo Wenchen Zhang Qingfeng Zeng Junning Li Xiaofeng Zhao Semi-crystalline design of SiB6-modified enamel coatings: Towards long-term synergistic resistance to hydrothermal corrosion Journal of Materials Research and Technology Semi-crystalline enamel coating SiB6 Porosity Hydrothermal corrosion Electrochemical impedance spectroscopy (EIS) |
| title | Semi-crystalline design of SiB6-modified enamel coatings: Towards long-term synergistic resistance to hydrothermal corrosion |
| title_full | Semi-crystalline design of SiB6-modified enamel coatings: Towards long-term synergistic resistance to hydrothermal corrosion |
| title_fullStr | Semi-crystalline design of SiB6-modified enamel coatings: Towards long-term synergistic resistance to hydrothermal corrosion |
| title_full_unstemmed | Semi-crystalline design of SiB6-modified enamel coatings: Towards long-term synergistic resistance to hydrothermal corrosion |
| title_short | Semi-crystalline design of SiB6-modified enamel coatings: Towards long-term synergistic resistance to hydrothermal corrosion |
| title_sort | semi crystalline design of sib6 modified enamel coatings towards long term synergistic resistance to hydrothermal corrosion |
| topic | Semi-crystalline enamel coating SiB6 Porosity Hydrothermal corrosion Electrochemical impedance spectroscopy (EIS) |
| url | http://www.sciencedirect.com/science/article/pii/S2238785425019040 |
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