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The plasma electrolytic oxidation micro-discharge channel model and its microstructure characteristic based on Ti tracer
Gao FY(高方圆); Hao L(郝丽); Li G(李光); Xia Y(夏原)
2018-02-15
发表期刊APPLIED SURFACE SCIENCE
卷号431页码:13-16
ISSN0169-4332
摘要This study focuses on the individual discharge channel of ceramic coating prepared by plasma electrolytic oxidation (PEO), and attempts to reveal the mechanism of breakdown discharge at low voltage. Titanium (Ti) was employed as a substrate with the layer of aluminum deposited on it (aluminized Ti). The shape and microstructure of the discharge channels in PEO coatings were investigated using transmission electron microscope (TEM) and scanning electron microscopy (SEM). A schematic model of the individual discharge channel was proposed based on Ti tracer method. The shape of the discharge channel was mainly cylinder-shaped in the compact coating, with a groove-like oxidation region existed at the coating/substrate interface. In the groove-like oxidation region, the phase composition mainly composed of amorphous and mixed polycrystalline (aluminum titanate and mullite). beta-Al2O3 was found in the ceramic coating. TEM morphology showed that nanometer sized micro channels existed in the ceramic coatings. (C) 2017 Elsevier B.V. All rights reserved.
关键词Plasma Electrolytic Oxidation Discharge Channel Schematic Model Ti Tracer
DOI10.1016/j.apsusc.2017.07.281
收录类别SCI ; EI
语种英语
WOS记录号WOS:000416964200004
关键词[WOS]ALLOY ; PEO ; ALUMINUM
WOS研究方向Chemistry ; Materials Science ; Physics
WOS类目Chemistry, Physical ; Materials Science, Coatings & Films ; Physics, Applied ; Physics, Condensed Matter
项目资助者International Science & Technology Cooperation Program of China(2014DFG51240) ; Chinese Academy of Sciences(XDB22040503)
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力学所作者排名1
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文献类型期刊论文
条目标识符http://dspace.imech.ac.cn/handle/311007/72230
专题先进制造工艺力学重点实验室
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Gao FY,Hao L,Li G,et al. The plasma electrolytic oxidation micro-discharge channel model and its microstructure characteristic based on Ti tracer[J]. APPLIED SURFACE SCIENCE,2018,431:13-16.
APA 高方圆,郝丽,李光,&夏原.(2018).The plasma electrolytic oxidation micro-discharge channel model and its microstructure characteristic based on Ti tracer.APPLIED SURFACE SCIENCE,431,13-16.
MLA 高方圆,et al."The plasma electrolytic oxidation micro-discharge channel model and its microstructure characteristic based on Ti tracer".APPLIED SURFACE SCIENCE 431(2018):13-16.
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