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Fluoride-dominated coating on Mg alloys fabricated by plasma electrolytic process in ambient non-aqueous electrolyte
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, Yuming1,2; Peng, Zhenjun1; Wang, Lingqian1; Zhou, Jiansong1; Wang, Peng1; Liang, Jun1
The second department金属基高温润滑材料组
2021-03-04
Source PublicationSURFACE ENGINEERING
Volume37Issue:3Pages:360-364
Abstract

In this work, the non-aqueous NH4F-EG electrolyte was utilized for plasma electrolytic oxidation (PEO) process on AZ91 alloy to fabricate MgF2-dominated coating at room temperature. Results revealed that the coating had a homogeneous composition and porous microstructure. Compared with the bare AZ91 samples, the coated samples showed a 109 mV nobler corrosion potential and two orders of magnitude lower corrosion current in neutral 3.5 wt%
NaCl solution, while a 54 mV nobler corrosion potential and one orders of magnitude lower corrosion current in acidic 3.5 wt% NaCl solution (pH=3). Thus, it’s unveiled a novel possibility to prepare non-oxide coating on Mg alloy by PEO process in non-aqueous electrolyte. And the MgF2 coating provided effective corrosion protection for Mg alloy both in neutral and acid corrosive media.

KeywordPlasma electrolytic oxidation non-aqueous electrolyte MgF2 coating magnesium alloy plasma electrolytic fluorination
DOI10.1080/02670844.2020.1747744
Indexed BySCI
If3.169
compositor第一作者单位
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.licp.cn/handle/362003/27775
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,Peng, Zhenjun,Wang, Lingqian,et al. Fluoride-dominated coating on Mg alloys fabricated by plasma electrolytic process in ambient non-aqueous electrolyte[J]. SURFACE ENGINEERING,2021,37(3):360-364.
APA Qi, Yuming,Peng, Zhenjun,Wang, Lingqian,Zhou, Jiansong,Wang, Peng,&Liang, Jun.(2021).Fluoride-dominated coating on Mg alloys fabricated by plasma electrolytic process in ambient non-aqueous electrolyte.SURFACE ENGINEERING,37(3),360-364.
MLA Qi, Yuming,et al."Fluoride-dominated coating on Mg alloys fabricated by plasma electrolytic process in ambient non-aqueous electrolyte".SURFACE ENGINEERING 37.3(2021):360-364.
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