Effect of Initial Oxide Film on the Formation and Performance of Plasma Electrolytic Oxidation Coating on 7075 Aluminum Alloy

doi:10.1007/s40195-022-01378-7

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	Effect of Initial Oxide Film on the Formation and Performance of Plasma Electrolytic Oxidation Coating on 7075 Aluminum Alloy
	Zhu, Mingyu 1,2; Song, Yingwei 2; Dong, Kaihui 1,2; Shan, Dayong 2; Han, En-Hou 2
刊名	ACTA METALLURGICA SINICA-ENGLISH LETTERS
	2022-02-16
页码	13
关键词	Aluminum alloys Plasma electrolytic oxidation Initial oxide film Growth process Spark discharge Compactness
ISSN号	1006-7191
DOI	10.1007/s40195-022-01378-7
通讯作者	Song, Yingwei(ywsong@imr.ac.cn)
英文摘要	In the early stage of plasma electrolytic oxidation (PEO), the quick formation of the initial oxide film on the surface of the aluminum substrate is necessary for the subsequent discharge spark process. Furthermore, the compactness of the initial oxide film greatly affects the quality of the PEO coating, but the related mechanisms are not investigated in detail. In this paper, the status of the initial oxide film was adjusted by adding the (NaPO3)(6) into the based electrolyte, and then the effect of initial oxide film on the formation of the PEO coating was compared. Microstructure and chemical composition were analyzed by scanning electron microscope, transmission electron microscopy and X-ray photoelectron spectrometer. The compactness of the initial oxide film was characterized by Mott-Schottky plots. The corrosion resistance was measured by electrochemical impedance spectroscopy. The results show that the addition of (NaPO3)(6) can promote the co-deposition of phosphide compound into the initial oxide film and improve the film compactness, which is beneficial for the more uniform spark discharge in the later stage. As a result, the addition of (NaPO3)(6) is helpful to obtain PEO coating with better performance.
资助项目	LingChuang Research Project of China National Nuclear Corporation
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	CHINESE ACAD SCIENCES, INST METAL RESEARCH
WOS记录号	WOS:000757536400003
资助机构	LingChuang Research Project of China National Nuclear Corporation
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/173366]
专题	金属研究所_中国科学院金属研究所
通讯作者	Song, Yingwei
作者单位	1.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Zhu, Mingyu,Song, Yingwei,Dong, Kaihui,et al. Effect of Initial Oxide Film on the Formation and Performance of Plasma Electrolytic Oxidation Coating on 7075 Aluminum Alloy[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2022:13.
APA	Zhu, Mingyu,Song, Yingwei,Dong, Kaihui,Shan, Dayong,&Han, En-Hou.(2022).Effect of Initial Oxide Film on the Formation and Performance of Plasma Electrolytic Oxidation Coating on 7075 Aluminum Alloy.ACTA METALLURGICA SINICA-ENGLISH LETTERS,13.
MLA	Zhu, Mingyu,et al."Effect of Initial Oxide Film on the Formation and Performance of Plasma Electrolytic Oxidation Coating on 7075 Aluminum Alloy".ACTA METALLURGICA SINICA-ENGLISH LETTERS (2022):13.