Susceptibility of Passive Film Stability to the Pore Defect for HVAF-Sprayed Fe-Based Amorphous Coatings

doi:10.1007/s11666-023-01540-2

IMR OpenIR

	Susceptibility of Passive Film Stability to the Pore Defect for HVAF-Sprayed Fe-Based Amorphous Coatings
	Li, Tian-Run 1,2; Wang, De-Bin 1,2; Wang, Qi 1,2; Zhang, Suo-De 1; Wang, Jian-Qiang 1
通讯作者	Zhang, Suo-De(sdzhang@imr.ac.cn) ; Wang, Jian-Qiang(jqwang@imr.ac.cn)
	2023-01-31
发表期刊	JOURNAL OF THERMAL SPRAY TECHNOLOGY
ISSN	1059-9630
页码	16
摘要	It is important to investigate the susceptibility of passive film stability to pore defect in amorphous metal coatings (AMCs). To clarify the correlation, Fe-based AMCs with different porosities were prepared by high velocity air fuel (HVAF) spraying, and their electrochemical properties, semiconductor characteristics, and surface chemistry of the passive film were determined in detail. The results showed that the passivation current density exhibited obvious sensitivity to porosity. It could increase by more than an order of magnitude while the porosity increased by only a factor of 1 (from 0.35 to 0.78 vol.%). This sensitivity was attributed to the increase in point defect density and the decrease in electronic work of the passive film. In addition, the positive shift in the film-forming potential could also increase the passivation current density. This is due to the fact that the passive film inside the pore defects degrades more at a higher film-forming potential. This work inspires us that the porosity should be strictly controlled to ensure a stable passive film in amorphous metal coatings.
关键词	amorphous coating electrochemical corrosion passive film pore semiconductor property
资助者	National Natural Science Foundation of China ; Key Research Program of the Chinese Academy of Sciences
DOI	10.1007/s11666-023-01540-2
收录类别	SCI
语种	英语
资助项目	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
WOS类目	Materials Science, Coatings & Films
WOS记录号	WOS:000922316800002
出版者	SPRINGER
引用统计	被引频次：10[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/321006/175188
专题	中国科学院金属研究所
通讯作者	Zhang, Suo-De; Wang, Jian-Qiang
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 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	Li, Tian-Run,Wang, De-Bin,Wang, Qi,et al. Susceptibility of Passive Film Stability to the Pore Defect for HVAF-Sprayed Fe-Based Amorphous Coatings[J]. JOURNAL OF THERMAL SPRAY TECHNOLOGY,2023:16.
APA	Li, Tian-Run,Wang, De-Bin,Wang, Qi,Zhang, Suo-De,&Wang, Jian-Qiang.(2023).Susceptibility of Passive Film Stability to the Pore Defect for HVAF-Sprayed Fe-Based Amorphous Coatings.JOURNAL OF THERMAL SPRAY TECHNOLOGY,16.
MLA	Li, Tian-Run,et al."Susceptibility of Passive Film Stability to the Pore Defect for HVAF-Sprayed Fe-Based Amorphous Coatings".JOURNAL OF THERMAL SPRAY TECHNOLOGY (2023):16.