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

doi:10.1016/j.surfcoat.2023.130225

IMR OpenIR

	The impact-corrosion behavior of HVAF-sprayed monolayer and hierarchical Fe-based amorphous coatings
	Yang, Fan 1,2; Wang, Debin 1,2; Li, Tianrun 1,2; Yang, Baijun 1; Zhang, Suode 1; Wang, Jianqiang 1
通讯作者	Yang, Baijun(bjyang@imr.ac.cn) ; Wang, Jianqiang(jqwang@imr.ac.cn)
	2024-01-30
发表期刊	SURFACE & COATINGS TECHNOLOGY
ISSN	0257-8972
卷号	476 页码:14
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.
关键词	Hierarchical coating Impact energy Corrosion Polarization Impedance spectroscopy
资助者	National Key Research and Development Program of China ; National Natural Science Foundation of China ; Key Research Program of the Chinese Academy of Sciences
DOI	10.1016/j.surfcoat.2023.130225
收录类别	SCI
语种	英语
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
WOS类目	Materials Science, Coatings & Films ; Physics, Applied
WOS记录号	WOS:001123733800001
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/177100
专题	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.