Mechanistic insight into the environmental stress-induced formation and evolution of the micro-defects in deteriorating organic coatings

doi:10.1016/j.corsci.2025.112815

IMR OpenIR

	Mechanistic insight into the environmental stress-induced formation and evolution of the micro-defects in deteriorating organic coatings
	Li, Zhuoxuan 1; Dong, Xiaomei 1; Wang, Yuhao 1; Li, Qiubo 1; Yong, Xingyue 1; Wang, Shaogang 2
通讯作者	Yong, Xingyue(yongxy@mail.buct.edu.cn)
	2025-06-01
发表期刊	CORROSION SCIENCE
ISSN	0010-938X
卷号	249 页码:16
摘要	The synergistic effects of corrosion and alternating stresses accelerate the failure of organic coatings during service. However, the influence of alternating stress on coating failure mechanisms remains insufficiently studied. In this study, X-ray diffraction topography (XRT) and scanning electron microscopy (SEM) were employed to analyze the environmental stress-induced formation and evolution of the micro-defects in a deteriorating organic coating. Electrochemical impedance spectroscopy (EIS) was used to investigate how these stress-induced micro-defects affect coating capacitance. The results showed that environmental stresses not only significantly alter the surface morphology of coated specimens but also promote the initiation and growth of both new and pre-existing micro-defects, leading to changes in their distribution. Additionally, applied stresses were found to favor the formation of non-spherical micro-defects more effectively than corrosion stress. Changes in the number and distribution of micro-defects directly influenced coating capacitance, which, in turn, impacted its protective performance. Overall, this study underscores the critical role of environmental stresses in initiating and propagating micro-defects within organic coating protective systems.
关键词	Organic coating Micro-defects Alternative loads X-ray diffraction topography (XRT) Electrochemical impedance spectroscopy (EIS)
资助者	Na-tional Natural Science Foundation of China
DOI	10.1016/j.corsci.2025.112815
收录类别	SCI
语种	英语
资助项目	Na-tional Natural Science Foundation of China[52171062]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001438255500001
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/179742
专题	中国科学院金属研究所
通讯作者	Yong, Xingyue
作者单位	1.Beijing Univ Chem Technol, State Key Lab Organ Inorgan Composites, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Li, Zhuoxuan,Dong, Xiaomei,Wang, Yuhao,et al. Mechanistic insight into the environmental stress-induced formation and evolution of the micro-defects in deteriorating organic coatings[J]. CORROSION SCIENCE,2025,249:16.
APA	Li, Zhuoxuan,Dong, Xiaomei,Wang, Yuhao,Li, Qiubo,Yong, Xingyue,&Wang, Shaogang.(2025).Mechanistic insight into the environmental stress-induced formation and evolution of the micro-defects in deteriorating organic coatings.CORROSION SCIENCE,249,16.
MLA	Li, Zhuoxuan,et al."Mechanistic insight into the environmental stress-induced formation and evolution of the micro-defects in deteriorating organic coatings".CORROSION SCIENCE 249(2025):16.