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Effect of Initial Oxide Film on the Formation and Performance of Plasma Electrolytic Oxidation Coating on 7075 Aluminum Alloy
Zhu, Mingyu1,2; Song, Yingwei1; Dong, Kaihui1,2; Shan, Dayong1; Han, En-Hou1
Corresponding AuthorSong, Yingwei(ywsong@imr.ac.cn)
2022-02-16
Source PublicationACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN1006-7191
Pages13
AbstractIn 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.
KeywordAluminum alloys Plasma electrolytic oxidation Initial oxide film Growth process Spark discharge Compactness
Funding OrganizationLingChuang Research Project of China National Nuclear Corporation
DOI10.1007/s40195-022-01378-7
Indexed BySCI
Language英语
Funding ProjectLingChuang Research Project of China National Nuclear Corporation
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000757536400003
PublisherCHINESE ACAD SCIENCES, INST METAL RESEARCH
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/173367
Collection中国科学院金属研究所
Corresponding AuthorSong, Yingwei
Affiliation1.Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China
Recommended Citation
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.
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