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Plasma electrolytic fluorination on Al alloys: Coating growth and plasma discharge behavior
Department中国科学院材料磨损与防护重点实验室/先进润滑与防护材料研究发展中心
Qi, Yuming; Liu, Siqin; Luo, Lan; Peng, Zhenjun; Liang, Jun; Wang, Peng
The second department金属基高温润滑材料组
2021-11-01
Source PublicationCeramics International
Volume47Issue:21Pages:29758–29770
Abstract

The plasma electrolytic fluorination (PEF) process was conducted on 6061 Al alloy in the NH4F-EG non-aqueous electrolyte at room temperature. The microstructure and composition of the resultant coating were characterized by SEM, EDS, XRD and XPS. Also the coating growth and plasma discharge behavior were investigated by means of a well-designed jig, digital camera and OES, in order to understand the process characteristics. Results showed that the coating was dominantly composed of AlF3, and characterized by a flake-like microstructure accompanying with some micro-pores and numerous micro-cracks. The internal of the coating was porous with a compact barrier layer near the substrate/coating interface. The fluorination of the substrate contributed the inward growth of the coating. PEF discharge sparks were characterized by tiny size and weak intensity during the whole process, of which the plasma electron temperature was about (3510 ± 110) K. Also, the discharge behavior and coating growth mechanism of the PEF process on Al alloy were discussed.

KeywordPlasma electrolytic fluorination Mechanism Discharge behavior Growth behavior Al alloy Plasma electrolytic oxidation
DOI10.1016/j.ceramint.2021.07.148
Indexed BySCI
If4.527
Language英语
compositor第一作者单位
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.licp.cn/handle/362003/27776
Collection固体润滑国家重点实验室(LSL)
中国科学院材料磨损与防护重点实验室/先进润滑与防护材料研究发展中心
Corresponding AuthorLiang, Jun
Affiliation1.State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences
2.Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Qi, Yuming,Liu, Siqin,Luo, Lan,et al. Plasma electrolytic fluorination on Al alloys: Coating growth and plasma discharge behavior[J]. Ceramics International,2021,47(21):29758–29770.
APA Qi, Yuming,Liu, Siqin,Luo, Lan,Peng, Zhenjun,Liang, Jun,&Wang, Peng.(2021).Plasma electrolytic fluorination on Al alloys: Coating growth and plasma discharge behavior.Ceramics International,47(21),29758–29770.
MLA Qi, Yuming,et al."Plasma electrolytic fluorination on Al alloys: Coating growth and plasma discharge behavior".Ceramics International 47.21(2021):29758–29770.
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