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The impact-corrosion behavior of HVAF-sprayed monolayer and hierarchical Fe-based amorphous coatings

文献类型：期刊论文

作者Yang, Fan1,2; Wang, Debin1,2; Li, Tianrun1,2; Yang, Baijun1; Zhang, Suode1; Wang, Jianqiang1
刊名SURFACE & COATINGS TECHNOLOGY
出版日期2024-01-30
卷号476页码:14
关键词Hierarchical coating Impact energy Corrosion Polarization Impedance spectroscopy
ISSN号0257-8972
DOI10.1016/j.surfcoat.2023.130225
通讯作者Yang, Baijun(bjyang@imr.ac.cn) ; Wang, Jianqiang(jqwang@imr.ac.cn)
英文摘要The impact-corrosion behavior of the monolayer and hierarchical Fe-based amorphous coatings (AMCs) fabricated by high velocity air fuel (HVAF) in 3.5 wt% NaCl solution were investigated in detail. The polarization results indicate with the impact energy increases, the monolayer coating exhibits a corrosion failure as evident by a distinct increment in passive current density, which is caused by the penetrated radial cracks. The radial cracks provide corrosion channels between the solution and the substrate. Differently, the hierarchical coating shows a gradual improvement in passive current density and metastable pitting frequency with the increase of impact energy. This is related to the IR drop, and the larger potential difference between inside and outside the crack results in the passive film being more susceptible to breakdown. Long-term electrochemical impedance spectroscopy results demonstrate that the hierarchical coating possess excellent resistance to impact-corrosion. Nevertheless, when the impact energy exceeds 21.6 J, a corrosion degradation occurs after 720 h. This failure is because that the cone cracks are extended with the energy increasing, causing pH drop and Cl- accumulation and oxygen deficiency inside the cracks. This work reveals the mechanism of impact-corrosion of Fe-based AMCs, and provides guidance for their engineering application.
资助项目National Key Research and Development Program of China[2022YFF0609002] ; National Natural Science Foundation of China[U1908219] ; National Natural Science Foundation of China[52171163] ; Key Research Program of the Chinese Academy of Sciences[ZDRW-CN-2021-2-2]
WOS研究方向Materials Science ; Physics
语种英语
WOS记录号WOS:001123733800001
出版者ELSEVIER SCIENCE SA
资助机构National Key Research and Development Program of China ; National Natural Science Foundation of China ; Key Research Program of the Chinese Academy of Sciences
源URL[http://ir.imr.ac.cn/handle/321006/177099]  
专题金属研究所_中国科学院金属研究所
通讯作者Yang, Baijun; Wang, Jianqiang
作者单位1.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
推荐引用方式
GB/T 7714		 Yang, Fan,Wang, Debin,Li, Tianrun,et al. The impact-corrosion behavior of HVAF-sprayed monolayer and hierarchical Fe-based amorphous coatings[J]. SURFACE & COATINGS TECHNOLOGY,2024,476:14.
APA Yang, Fan,Wang, Debin,Li, Tianrun,Yang, Baijun,Zhang, Suode,&Wang, Jianqiang.(2024).The impact-corrosion behavior of HVAF-sprayed monolayer and hierarchical Fe-based amorphous coatings.SURFACE & COATINGS TECHNOLOGY,476,14.
MLA Yang, Fan,et al."The impact-corrosion behavior of HVAF-sprayed monolayer and hierarchical Fe-based amorphous coatings".SURFACE & COATINGS TECHNOLOGY 476(2024):14.

入库方式： OAI收割

来源：金属研究所

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